Gastrointestinal Flashcards
What is gastro-oesophageal reflux disease?
Reflux of stomach contents (acid and bile) causes troublesome symptoms such as heartburn
What can prolonged GORD cause? (3)
1) Oesophagitis
2) Benign oesophageal strictures
3) Barrett’s oesophagus
Give 4 causes of GORD
- ) Lower oesophageal sphincter hypotension
- ) Hiatus hernia
- ) Oesophageal dysmotility
- ) Obesity
- ) Gastric acid hypersecretion
- ) Delayed gastric emptying
- ) Smoking
- ) Alcohol
- ) Pregnancy
- ) Drugs (nitrates)
Give 3 oesophageal symptoms of GORD
- ) Heartburn
- ) Belching
- ) Acid brash (acid/bile regurgitation)
- ) Waterbrash (increased salivation)
- ) Odynophagic (painful swallowing)
Give 3 extra-oesophageal symptoms of GORD
- ) Nocturnal asthma
- ) Chronic cough
- ) Laryngitis
- ) Sinusitis
What can GORD lead to that could lead to cancer?
Barrett’s oesophagus
What is the histological change in Barrett’s oesophagus?
Distal oesophageal epithelium undergoes metaplasia from squamous to columnar
What tests can we do for GORD? (3)
1) Endoscopy
2) Barium swallow
3) 24 hours of oesophageal monitoring and manometry
When do we do an endoscopy in GORD? (2)
1) Symptoms >4 weeks
2) >55 with alarm symptoms
What is the treatment for GORD? (4)
- ) Lifestyle changes
- ) Drugs (antacids alginates, PPI)
- ) Avoid nitrates, antcholinergics, calcium channel blockers, NSAIDs, bisphosphonates
- ) Surgery to increase sphincter pressure
Give an example of a PPI
Lanzoprazole
Give the lifestyle changes for GORD
- ) Weight loss
- ) Smoking cessation
- ) Small regular meals
- ) Reduce hot drinks
- ) Alcohol
- ) Citrus fruits, tomatoes, onions
- ) Fizzy drinks
- ) Spicy foods
- ) Caffeine, chocolate
- ) Avoid eating <3hr before bed
- ) Raised bed head
Give 3 symptoms of peptic ulcer disease
- ) Epigastric pain often related to hunger, specific foods, time of day
- ) Bloating
- ) Fullness after meals
- ) Heartburn
- ) Tender epigastrium
- ) ALARM symptoms
What are the ALARMS symptoms?
Anaemia Loss of weight Anorexia Recent onset Melena (or haematemesis) Swallowing problems
What do we test for if the patient is <55 with peptic ulcer disease?
H. pylori
How do we treat a H. pylori infection?
PAC
PPI
Amoxicillin
Clarithromycin
What should we do if a patient is >55 and has new dyspepsia or ALARM symptoms?
Urgent endoscopy
What drugs can cause peptic ulcer disease?
NSAIDs
How can a duodenal ulcer cause pancreatitis?
It erodes through to the pancreas
Where do ulcers erode into to cause haemorrhaging?
Arteries
Where do ulcers erode into to cause peritonitis
Layers of stomach/duodenal wall
Is H. pylori gram negative or positive?
Negative
Are duodenal or gastric ulcers more common?
Duodenal
Give 2 minor risk factors for duodenal ulcers
- ) Increased gastric secretion
- ) Increased gastric emptying (decreased duodenal pH)
- ) Smoking
What test do we do in peptic ulcer disease to diagnose?
Upper GI endoscopy
On which curve of the stomach do gastric ulcers usually occur?
Lesser curve
Give 3 risk factors for gastric ulcers
- ) H. pylori
- ) Smoking
- ) NSAIDs
- ) Reflux
- ) Delayed emptying
- ) Stress
What are the 4 parts of peptic ulcer disease treatment?
1) Lifestyle (decrease alcohol and tobacco)
2) H. pylori eradication
3) Drugs to reduce acid
4) Drug induced ulcers (stop drug if possible)
What drugs can we give to reduce acid in peptic ulcer disease? (2)
1) PPIs - lansoprazole
2) H2 blockers - ranitidine
What is gastritis?
Inflammation of the lining of the stomach
What are the 3 pathophysiological causes of gastritis?
1) Mucosal ischaemia (less mucin made)
2) Increased acid
3) Helicobacter infection (live in mucus layer)
Give 4 causes of gastritis
- ) Alcohol
- ) NSAIDs
- ) H. pylori
- ) Reflux/hiatus hernia
- ) Atrophic gastritis
- ) Granulomas
- ) CMV (cytomegalovirus)
What are the symptoms of gastritis? (2)
Epigastric pain
Vomiting
How do we diagnose gastritis?
Upper GI endoscopy
How do we prevent gastritis when taking NSAIDs?
PPI
What is malabsorption?
Where we do not absorb enough food/nutrients from our diet
What are the 3 most common causes of gastrointestinal malabsorption in the UK?
1) Coeliac disease
2) Chronic pancreatitis
3) Crohn’s disease
Give 4 more rare causes of malabsorption
- ) Decreased bile
- ) Pancreatic insufficiency
- ) Small bowel mucosa
- ) Bacterial overgrowth
- ) Infection
- ) Intestinal hurry
What 2 drugs can cause malabsorption?
Alcohol, metformin
Give 5 symptoms of malabsorption
- ) Diarrhoea
- ) Weight loss
- ) Lethargy
- ) Steatorrhoea
- ) Bloating
Give 4 signs of malabsorption
- ) Anaemia
- ) Bleeding disorders
- ) Oedema
- ) Metabolic bone disease
- ) Neurological features
What decreases in anaemia in malabsorption? (3)
Fe, B12, folate
What decreases in bleeding disorders in malabsorption?
Vitamin K
What decreases in oedema in malabsorption?
Protein
What decreases in metabolic bone disease in malabsorption?
Vitamin D
What are we looking for in a blood test for malabsorption? (8)
- ) FBC (micro/macrocytic anaemia)
- ) Low Ca2+
- ) Low Fe
- ) Low B12
- ) Low folate
- ) Lipid profile
- ) High INR
- ) Coeliac tests
What are we looking for in a stool test for malabsorption?
Fat globules, microscopy, elastase
What do we do for bacterial overgrowth testing in malabsorption?
Breath hydrogen analysis
What are the results of breath hydrogen analysis if there is bacterial overgrowth?
Increased exhaled hydrogen after giving glucose
Give an organism that can cause infectious malabsorption
Giardia lamblia
What physical test can we do for malabsorption?
Endoscopy and small bowel biopsy
What is coeliac disease?
T cell responses to gluten in the small bowel causing villous atrophy and malabsorption
What gene is associated with 95% of cases of coeliac disease?
HLA DQ2
What gene is associated with 5% of cases of coeliac disease?
HLA DQ8
What is coeliac disease associated with? (2)
1) Autoimmune disease
2) Dermatitis herpetiformis
What are the 2 peaks of prevalence of coeliac disease?
Childhood and 50-60 yrs
What should we suspect in patients with diarrhoea, weight loss and anaemia?
Coeliac disease
Give 6 presenting features of coeliac disease
- ) Bad smelling stools/steatorrhoea
- ) Diarrhoea
- ) Abdominal pain
- ) Bloating
- ) Nausea and vomiting
- ) Aphthous ulcers
- ) Angular stomatitis
- ) Weight loss
- ) Fatigue
- ) Weakness
- ) Osteomalacia
- ) Failure to thrive
What main antibodies are found in coeliac disease? (3)
1) Anti-transglutaminsae (IgA)
2) Anti-endomysial
3) Deamidated gliadin peptide
What do blood tests show in coeliac disease? (4)
- ) Decreased Hb
- ) Increased red cell distribution width
- ) Low B12
- ) Low ferritin
What is the treatment for coeliac disease?
Lifelong gluten free diet
Give 3 complications of coeliac disease
- ) Anaemia
- ) Dermatitis herpetiformis
- ) Osteopenia/osteoporosis
- ) Hyposplenism
- ) GI T cell lymphoma
- ) Increased risk of malignancy
- ) Neuropathies
- ) Secondary lactose intolerance
What is irritable bowel syndrome? (IBS)
A group of mixed abdominal symptoms for which no organic cause can be found
What are most IBSs though to be due to? (3)
Disorders of intestinal motility, enhanced visceral perception, microbial dysbiosis
How do we diagnose IBS?
Recurrent abdominal pain/discomfort with at least 2 of:
- ) Relief by defecation
- ) Altered stool form
- ) Altered bowel frequency
Give 3 other features of IBS
- ) Urgency
- ) Incomplete evacuation
- ) Abdominal bloating/distension
- ) Mucous PR
- ) Worsening of symptoms after food
- ) Nausea, bladder symptoms, backache
What the the chronic symptoms of IBS often exacerbated by? (3)
- ) Stress
- ) Menstruation
- ) Gastroenteritis
What drug do we give for constipation?
Lactulose
What drug do we give for diarrhoea?
Loperamide
What drugs do we give for bloating/colic in IBS?
Antispamodics
What non medical treatment is given in IBS
CBT and hypnotherapy
What do we need to diagnose IBS if the history is classic? (4)
FBC, ESR, CRP, coeliac serology
What is ulcerative colitis?
A relapsing and remitting inflammatory disorder of the colonic mucosa
Where does UC not spread past?
Ileocaecal valve
What is UC in the rectum named?
Proctitis
What is UC in the left part of the colon named?
Left-sided colitis
What is US in the entire colon named?
Pancolitis
What is the cause of UC?
Inappropriate immune response against possibly abnormal colonic flora in genetically susceptible individuals
What is the difference in lesions between UC and Crohn’s?
UC has distinct cut off line, Crohn’s has skip lesions
Is UC or Crohn’s more common in non-smokers?
UC
What is the pathological appearance in UC? (2)
1) Hyperaemic/haemorrhagic colic mucosa +/- pseudo polyps formed by inflammation
2) Punctate ulcers may extend deep into lamina propria
Give 3 GI symptoms of UC
- ) Episodic/chronic diarrhoea (+/- blood and mucus)
- ) Crampy abdominal discomfort
- ) Bowel frequency relates to severity
- ) Urgency/tenesmus = proctitis
Give 3 systemic symptoms of a UC attack
Fever, malaise, anorexia, weight loss
Give 3 signs of acute severe UC
Fever, tachycardia, tender distended abdomen
Give 4 extra intestinal signs of UC
- ) Clubbing
- ) Aphthous oral ulcers
- ) Erythema nodosum
- ) Conjunctivitis
- ) Episcleritis
- ) Iritis
- ) Large joint arthritis
- ) Sacroilitis
- ) Anklosing spondylitis
- ) Primary sclerosing cholingitis
- ) Nutritional deficits
What 5 tests do we do for UC?
- ) Blood
- ) Stool MC&S/CDT
- ) Faecal calprotectin
- ) AXR
- ) Lower GI endoscopy
What does MC&S stand for?
Microbiology culture & sensitivity
What does CDT stand for?
Carbohydrate deficient transferrin test
What 3 things does an AXR show in UC?
- ) No faecal shadows
- ) Mucosal thickening/islands
- ) Colonic dilatation
Give 2 acute complications of UC
- ) Toxic dilatation of colon with risk of perforation
- ) Venous thromboembolism
- ) Decreased K+
Give a chronic complication of UC
Colonic cancer
What do we treat mild UC with?
5-amino salicylic acid (mesalazine)
What do we treat moderate UC with? (2)
- ) Prednisolone
- ) Then maintain on 5-ASA (mesalazine)
What do we treat severe UC with?
Admit by nil by mouth with:
- ) IV hydration
- ) IV steroids (hydrocortisone)
- ) Thromboembolism prophylaxis
- ) Daily tests
What do we give if they improve on severe UC treatment?
Prednisolone
What do we give if they don’t improve on severe UC treatment?
Colectomy
What do we give in UC if there is no remission with steroids?
Immunomodulation (azathioprine)
What are UC and Crohn’s both types of?
Inflammatory bowel disease - IBD
What is Crohn’s disease?
A chronic inflammatory disease characterised by transmural granulomatouss inflammation affecting any part of the gut from the mouth to anus
Where does Crohn’s especially occur?
Terminal ileum and proximal colon
What causes Crohn’s disease?
Inappropriate immune response against possibly abnormal gut flora in genetically susceptible individuals
Does UC or Crohn’s have skip lesions?
Crohn’s
What drugs may exacerbate Crohn’s
NSAIDs
Give 3 GI symptoms of Crohn’s
- ) Diarrhoea
- ) Abdominal pain
- ) Weight loss/failure to thrive
Give 3 systemic symptoms of Crohn’s
- ) Fatigue
- ) Fever
- ) Malaise
- ) Anorexia
Give 3 GI signs of Crohn’s
- ) Bowel ulceration
- ) Abdominal tenderness/mass
- ) Perianal abscess/ fistulae/ skin tags
- ) Anal strictures
Give 2 extra intestinal signs of Crohn’s
- ) Clubbing
- ) Skin, joint and eye problems
Give 4 complications of Crohn’s
- ) Small bowel obstruction
- ) Toxic dilatation
- ) Abscess formation
- ) Fistulae
- ) Perforation
- ) Colon cancer
- ) PSC
- ) Malnutrition
What tests do we do in Crohn’s?
- ) Blood
- ) Stool
- ) Colonscopy and biopsy
- ) Barium enema
- ) Small bowel MRI
What does a barium enema show in Crohn’s? (3)
- ) Cobblestoning
- ) Deep fissuring ulcers
- ) Strictures
What lifestyle changes do we advise in Crohn’s?
Smoking cessation and optimisation of nutrition
What do we give to treat mild attacks of Crohn’s?
Prednisolone
What do we give to treat severe attacks of Crohn’s?
- ) IV hydration/electrolytes
- ) IV steroids (hydrocortisone)
- ) Thromboembolism prophylaxis
What do we give if the patient is improving on severe Crohn’s treatment?
Prednisolone
What do we give if the patient is not improving on severe Crohn’s treatment?
Biologics - anti-TNFalpha, infliximab
What treatment is given in perianal disease of Crohn’s?
- ) Oral antibiotics
- ) Immunosuppressant therapy
- ) +/- anti-TNFalpha
- ) Local surgery
- ) Metronidazole
What is bowel obstruction?
Blockage to the lumen of the gut
What are the 3 types of obstruction?
1) Intraluminal
2) Intramural
3) Extraluminal
What is Hirschsprung’s disease?
Developmental abnormality of an aganglionic segment - no rhythm cells, so impaired motility
Give 2 causes for a SBO
- ) Adhesions
- ) Hernias
Give 4 causes for a LBO
- ) Colon cancer
- ) Constipation
- ) Diverticular stricture
- ) Volvulus
What are adhesions?
Parts of the bowel connected by thin white fibrous bands
What are adhesions usually secondary to?
Previous surgery
What are 4 rarer causes of a bowel obstruction?
- ) Crohn’s
- ) Gallstone ileus
- ) Appendicitis
- ) Intussusception
- ) Foreign bodies
What are the 4 ways in which we classify bowel obstructions?
- ) Site
- ) Extent of luminal obstruction
- ) Mechanism (true/paralytic)
- ) Pathology
What are the 4 cardinal features of bowel obstruction?
1) Vomiting
2) Colicky pain
3) Constipation
4) Abdominal distension
What does fermentation of the intestinal contents in established obstruction cause?
Faeculent vomiting
What are the bowel sounds like in an obstruction?
Active, tinkling
What are the differences in presentation between a SBO and a LBO? (5)
- ) Vomiting occurs earlier in SBO
- ) Less distension in SBO
- ) Pain higher in abdomen in SBO
- ) Earlier constipation in LBO
- ) More constant pain in LBO
What is absolute constipation?
Obstipation
What are the bowel sounds like in a paralytic ileus obstruction?
Absent
What is a paralytic ileus?
Functional obstruction from decreased bowel motility, less pain
What is a simple bowel obstruction?
One obstruction point and no vascular compromise
What is a closed loop bowel obstruction?
Obstruction at 2 points forming a loop of grossly distended bowel at risk of perforation
What is a strangulated bowel obstruction?
Blood supply is compromised, sharper and more localised pain, peritonitis, possible fever
Give an example of a closed loop obstruction
Colonic volvulus
What is a closed loop obstruction due to?
Axial rotation at mesenteric attachments
What is the rule when looking at AXRs of bowel obstruction?
3-6-9 rule
What does a SBO look like on an AXR? (3)
- ) Central gas shadows with valvular conniventes that completely cross lumen
- ) No gas in large bowel
- ) Normal diameter of SB <3cm
What does a LBO look like on an AXR? (4)
- ) Peripheral gas shadows proximal to blockage
- ) Large bowel haustria do not cross lumen width
- ) Normal diameter of LB <6cm
- ) Normal diameter of caecum and sigmoid <9cm
What does an intersusseption look like on a CT?
Doughnut
What does a volvulus look like on a CT?
Coffee bean
What is the treatment for an obstruction?
Surgery - strangulations, LBOs, volvulus, hernias, tumours
Medical - Ileus, incomplete SBOs
What is the medical treatment for an obstruction?
- ) NGT
- ) IV fluids
- ) Analgesia
- ) Catheter
What is a pseudo-obstruction?
Like a mechanical GI obstruction but with no cause found
How do we treat a pseudo-obstruction? (2)
Neostigmine or colonscopic decompression
What is a sigmoid volvulus?
Bowel twists on mesentery and proceeds severe strangulated obstruction
How do we manage a sigmoid vovulus? (2)
Sigmoidoscopy and insertion of flatus tube
What is intussusception?
Where the small bowel telescopes, and there is invagination of one part into the other
What are intussusceptum and intussuscipien?
Intussusceptum - invaginating portion
Intussuscipien - receiving portion
How do we treat an intussusception?
Air enema
How do we diagnose an intussusception?
US
Where does acute mesenteric ischaemia almost always involve?
Small bowel
What are the 3 things acute mesenteric ischaemia may follow?
1) Superior mesenteric artery thrombosis/embolism
2) Mesenteric vein thrombosis
3) Non-occlusive disease
What is the classic clinical triad of presentation for acute mesenteric ischaemia?
1) Acute severe abdominal pain
2) No/minimal abdominal signs
3) Rapid hypovolaemia leading to shock
What is the pain like in acute mesenteric ischaemia?
Contant and central/around right iliac fossa
How are most diagnoses of acute mesenteric ischaemia found?
Necrotic bowel at laparotomy
What does an AXR show in acute mesenteric ischaemia?
Gasless abdomen
What are 4 findings on tests with acute mesenteric ischaemia?
1) Increased Hb
2) Increased WCC
3) Raised plasma amylase
4) Persistent metabolic acidosis (high lactate)
What are the 2 main complications of acute mesenteric ischaemia?
1) Septic peritonitis
2) Progression of a systemic inflammatory response syndrome (SIRS) to muti-organ failure
How do we treat acute mesenteric ischaemia?
Resus with fluid, antibiotics (piperacillin), LMWH/heparin, dead bowel surgically removed
What is the presenting triad of chronic mesenteric ischaemia?
1) Severe, colicky post-prandial pain
2) Weight loss (eating hurts)
3) Upper abdominal bruit
What are some other symptoms of chronic mesenteric ischaemia?
- ) PR bleeding
- ) Malabsorption
- ) Nausea and vomiting
What is chronic mesenteric ischaemia typically brought on by?
Combination of a low flow state with atheroma
What tests do we use to diagnose chronic mesenteric ischaemia? (2)
CT angiography and contrast enhanced MR angiography
How do we treat chronic mesenteric ischaemia?
Surgery is percutaneous transluminal angioplasty and stent insertion
What is ischaemic colitis also known as?
Chronic colonic ischaemia
What does chronic colonic ischaemic usually follow?
Low flow in the inferior mesenteric artery territory
What is the presentation of chronic colonic ischaemia?
Lower left sided abdominal pain +/- bloody diarrhoea
What is the gold standard for diagnosis of chronic colonic ischaemia?
Lower GI endoscopy
What is the treatment for chronic colonic ischaemia?
Fluids and antibiotics
What does gangrenous ischaemic colitis present with? (2)
Peritonitis and hypovolaemic shock
What is the treatment for gangrenous ischaemic colitis?
Resus and resection of affected bowel and stoma formation
What is a GI diverticulum?
An out pouching of the gut wall
Where does a GI diverticulum usually occur?
At the sites of entry of perforating arteries
What is diverticulosis?
Inflammation of a diverticulum
What is diverticular disease?
Symptomatic diverticula, when the pouch fills with material that becomes secondarily infected
Which are the most important type of diverticulum?
Acquired colonic diverticula
Where are most colonic diverticula?
Sigmoid colon
What is the pathology of a diverticula?
High intraluminal pressure possible to due lack of dietary fibre force the mucosa to herniate through the muscle layers of the gut at weak points adjacent to penetrating vessels
How is peritonitis caused in diverticular disease?
Pouches rupture
How are diverticula usually found?
Incidental finding at colonoscopy
What test confirms a diagnosis of acute diverticulitis?
Abdominal CT
What does diverticular disease present with? (2)
- ) Altered bowel habit +/- left sided colic relieved be defecation
- ) Nausea and flatulence
What is a treatment of diverticular disease?
Antispasmodics (mebeverine)
What does diverticulitis present with?
Diverticular disease features and:
- ) Pyrexia
- ) High WCC
- ) High CRP/ESR
- ) Tender colon
- ) +/- localised/generalised peritonism
How do we treat mild attacks of diverticulitis?
Bowel rest (fluids only) +/- antibiotics
How do we treat less mild attacks of diverticulitis?
Admit for analgesia, NBM, IV fluids, IV antibiotics
Give 3 complications of diverticulitis
1) Abscess formation
2) Perforation
3) Haemorrhage
4) Fistulae
5) Post infective strictures
How does appendicitis occur?
Gut organisms invade the appendix wall after lumen obstruction by lymphoid hyperplasia, faecolith, or filarial worms
What does gut organisms invading the appendix wall lead to? (3)
- ) Oedema
- ) Ischaemic necrosis
- ) Perforation
What is the classic presentation of appendicitis?
Periumbilical pain that moves to the right iliac fossa
Give 3 associated signs of appendicitis
- ) Tachycardia
- ) Fever
- ) Peritonism with guarding and reboud/percussion tenderness in RIF
- ) Anorexia
- ) Constipation
- ) Possibly vomiting, diarrhoea
What do we use to diagnose appendicitis?
CT
What does CRP stand for?
C-reactive protein
What does ESR stand for?
Erythrocyte sedimentation rate
What is the treatment for appendicitis? (2)
- ) Appendicetomy
- ) Antibiotics (piperacillin, metronidazole, cefuroxime)
What is peritonitis?
Inflammation of the peritoneum
Give 4 causes of peritonitis
Perforation of:
- ) Peptic/duodenal ulcer
- ) Diverticulum
- ) Appendix
- ) Bowel
- ) Gallbladder
What is the classification of peritonitis? (4)
- ) Onset
- ) Origin
- ) Cause
- ) Location
Give 3 symptoms of peritonitis
- ) Pain
- ) Tenderness
- ) Systemic symptoms
Give 4 signs of peritonitis
- ) Prostration
- ) Lying still
- ) Positive cough test
- ) Tenderness (+/- rebound)
- ) Abdominal righty
- ) Guarding
- ) No bowel sounds
- ) Shock
How do we differentiate peritonitis from pancreatitis?
Serum amylase levels (raised in pancreatitis)
What may an erect CXR show in peritonitis?
Gas under the diaphragm
What colour is the fluid on peridyalisis?
Yellow (infection)
What ascites lactate level is 100% sensitive of an infection?
> 25mg/dL
What is the management of peritonitis?
- ) Resus
- ) Antibiotics
- ) Treat cause
What is a hernia?
An abnormal protrusion of a viscus/part of a viscus through a defect of the wall of its containing cavity into an abnormal position
What is a irreducible hernia?
Contents cannot be pushed back into place
What is an obstructed hernia?
Bowel contents cannot pass
What is a strangulated hernia?
Ischaemia occurs
What is an incarceration hernia?
Contents of hernial sac are stuck inside by adhesions
Which is the most common hernia, and which gender is it more common in?
Inguinal, male
What are the 2 types of inguinal hernia?
1) Indirect
2) Direct
Where does an indirect inguinal hernia pass?
Through the internal inguinal ring, through the external ring if large
Where does a direct inguinal hernia go?
Pushes directly forward through the posterior wall of the inguinal cancel into a defect in the abdominal wall (Hesselbach’s triangle)
Is a direct or indirect inguinal hernia more common?
Indirect
Give 3 predisposing conditions for an inguinal hernia
- ) Male
- ) Chronic cough
- ) Constipation
- ) Urinary obstruction
- ) Heavy lifting
- ) Ascites
- ) Past abdominal surgery
How do we distinguish a direct inguinal hernia from an indirect one?
Reduce the hernia and occludes deep (internal) ring with 2 fingers. Ask patient to cough/stand. If the hernia is restrained, it is indirect.
Which side of the inferior epigastric vessels does each inguinal hernia arise?
Direct - medial
Indirect - lateral
What surgery do we do to repair an inguinal hernia?
Polypropylene mesh reinforces posterior wall
What are the 2 types of hiatus hernia?
1) Sliding (80%)
2) Rolling (20%)
What occurs in a sliding hiatus hernia?
Gastro-oesophageal junction slides up into the chest, acid reflux often happens
What occurs in a rolling hiatus hernia?
Gastro-oesophageal junction remains in abdomen but bulge of stomach herniates into chest alongside oesophagus
How do we treat a hiatus hernia?
- ) Weight loss
- ) GORD treatment
- ) Possibly surgery
What is a femoral hernia?
Where bowel enters the femoral canal
How does a femoral hernia present?
Mass in upper medial thigh or above inguinal ligament (points down leg)
What is the treatment of a femoral hernia?
Surgical repair (herniotomy/herniorrhaphy)
Which gender is a femoral hernia more common in?
Female
What is an incisional hernia?
Follows breakdown of muscle closure after surgery
What is gastroenteritis?
Diarrhoea (+/- vomiting) due to enteric infection with viruses, bacteria, parasites
What are 5 things diarrhoea can be defined as?
- ) Acute diarrhoea
- ) Dysentery
- ) Persistent
- ) Traveller’s
- ) Food poisoning
What is diarrhoea?
A decreased stool consistency from water, fat, or inflammatory discharge
What is the rule of C with C. diff infections?
C. diff is linked to clindamycin, ciprofloxacin, co-amoxiclav, cephalosporins - we should give additional antibiotics
How can we prevent C. diff infections?
Thorough handwashing with soap and water
Give 2 viral causes of infective diarrhoea
Norovirus, rotavisus
Give 4 bacterial causes of infective diarrhoea
Salmonella, campylobacter, E. coli, shigella
Give 1 parasitic cause of infective diarrhoea
Giardia
What does C. diff stand for?
Clostridium difficile
Give 4 signs of infective diarrhoea
- ) Dehydration
- ) Dry mucous membranes
- ) Decreased skin tugor
- ) Slow capillary refill
- ) Weight loss
- ) Anaemia
- ) Oral ulcers
- ) Fever
What tests can we do for infective diarrhoea? (5)
- ) Rectal exam
- ) Bloods
- ) Stool MC&S, faecal fat
- ) Sigmoidoscopy with biopsy
- ) Colonoscopy/barium enema
How do we treat infective diarrhoea? (2)
- ) Treat cause
- ) Oral rehydration unless severe (IV)
Which 2 drugs will decrease the frequency of the diarrhoea?
1) Codeine phosphate
2) Loperamide
What is acute pancreatitis characterised by?
Self perpetuating pancreatic enzyme mediated auto digestion
What are the causes of acute pancreatitis? (10)
GET SMASHED Gallstones Ethanol Trauma Steroids Mumps Autoimmune (PAN) Scorpion venom Hyperlipidaemia, hypothermia, hypercalcaemia ERCP and emboli Drugs
Give the 2 main symptoms of acute pancreatitis
- ) Gradual/sudden severe epigastric or central abdominal pain
- ) Vomiting prominent
How is the pain relieved in acute pancreatitis?
Sitting forward
Give 4 signs of acute pancreatitis
- ) Increased HR
- ) Fever
- ) Jaundice
- ) Shock
- ) Ileus
- ) Rigid abdomen
- ) +/- local/general tenderness
- ) Periumbilical bruising (Cullen’s sign)
- ) Flanks bruising (Grey Turner’s sign)
What do we test for in pancreatitis? (2)
- ) Raised serum amylase
- ) Serum lipase
What does an AXR show in pancreatitis?
- ) No psoas shadow
- ) Sentinel loop of proximal jejunum from ileus
What is the modified Glasgow criteria for predicting severity of pancreatitis? (8)
PANCREAS PaO2, <8kPa Age, >55 Neutrophilia, high WCC Calcium, low Renal function, urea high Enzymes, LDH and AST high Albumin, low Suger, high
What are the causes of pancreatitis when using the modified Glasgow criteria? (2)
- ) Gallstones
- ) Alcohol
What is the treatment of acute pancreatitis?
- ) NBM
- ) Catheter
- ) IV fluids
- ) Analgesia
- ) Monitor
- ) If worsening, oxygen, antibiotics, debridement
- ) ERCP and gallstone removal if progressive jaundice
Give 3 complications of acute pancreatitis
- ) Shock
- ) ARDs
- ) Renal failure
- ) Increased glucose and decreased calcium
- ) Sepsis
- ) Necrosis
- ) Fluid in lesser sac
- ) Abscesses
- ) Bleeding
- ) Thrombosis
- ) Fistulae
What does chronic pancreatitis present with?
Epigastric pain that ‘bores’ through to the back
Give 3 signs of chronic pancreatitis
- ) Erythema ab igneous mottled dusky geyness
- ) Bloating
- ) Steatorrhoea
- ) Weight loss
- ) Brille diabetes (up and down)
What do symptoms do in chronic pancreatitis?
Relapse and worsen
Give 3 causes of chronic pancreatitis
- ) Alcohol
- ) Smoking
- ) Autoimmune
- ) Familial, CF, haemochromatosis, pancreatic duct obstruction, congenital
How do we diagnose chronic pancreatitis?
Pancreatic calcifications on US
What is the treatment for chronic pancreatitis?
- ) Analgesia
- ) Lipase
- ) Insulin
- ) No alcohol and low fat
- ) Surgery for unremitting pain, weight loss, narcotic abuse
What is the surgery in chronic pancreatitis?
Pancreatectomy
Give 3 complications of chronic pancreatitis
- ) Pseudocyst
- ) Diabetes
- ) Biliary obstruction
- ) Local arterial aneurysm
- ) Splenic vein thrombosis
- ) Gastric varices
- ) Pancreatic carcinoma
What occurs in primary biliary cholangitis? (PBC)
Interlobular bile ducts damaged by chronic autoimmune granulomatous inflammation causing cholestasis
What may cholestasis in PBC lead to? (3)
- ) Fibrosis
- ) Cirrhosis
- ) Portal hypertension
What is PBC caused by?
Unknown environmental triggers and genetic predisposition leading to loss of immune tolerance to self-mitochondrial proteins
What gender is PBC more common in?
Women
Give 2 risk factors for PBC
- ) Family history
- ) Many UTIs
- ) Smoking
- ) Past pregnancy
- ) Other autoimmune diseases
- ) Nail polish/hair dye use
What (found in blood) are the hallmark of PBC?
Antimitochondrial antibodies (AMA)
How is a patient with PBC usually diagnosed?
Asymptomatic, incidental finding of increased ALP
What does ALP stand for?
Alkaline phosphate
Give 3 symptoms of PBC
- ) Lethargy
- ) Sleepiness
- ) Pruritus preceding jaundice
Give 3 signs of PBC
- ) Jaundice
- ) Skin pigmentation
- ) Xanthelasma (lipid laden yellow plaques around eyes)
- ) Hepatosplenomegaly
Give a complication of PBC
Osteomalacia/osteoporosis
What type of AMA subtype are 98% of PBC patients?
M2 subtype positive
What is the treatment for symptomatic PBC? (3)
- ) Colestyramine for pruritus
- ) Codeine phosphate for diarrhoea
- ) Bisphosphonates for osteoporosis prevention
What is a specific treatment for PBC? (2)
- ) Fat soluble vitamin prophylaxis - A, D, K
- ) High dose ursodeoxycholic acid
What is primary sclerosis cholangitis? (PSC)
Progressive cholestasis with bile duct inflammation and strictures
Give 2 symptoms of PSC
- ) Pruritus
- ) Fatigue
Give 3 genetic associations with PSC
- ) HLA-A1
- ) HLA B8
- ) HLA DR3
What does advanced PSC present with?
- ) Ascending cholangitis
- ) Cirrhosis
- ) Hepatic failure (jaundice)
Is IBD associated with PSC, and what does it raise the risk of?
IBD, colorectal malignancy
What are the positive antibodies in PSC? (and the one negative one?)
Positive
-) ANA, SMA, ANCA
Negative
-) AMA
What does ANA stand for?
Antinuclear antibody
What does SMA stand for?
Smooth muscle antibody
What does ANCA stand for?
Antineutrophil cytoplasmic antibody
What is the mainstay treatment for PSC?
Liver transplant
What is hereditary haemochromatosis? (HH)
An inherited disorder of iron metabolism in which increased intestinal iron absorption leads to iron deposition
Where does iron deposition occur in hereditary haemochromatosis?
- ) Joints
- ) Liver
- ) Heart
- ) Pancreas
- ) Pituitary
- ) Adrenals
- ) Skin
Why are women affected less severely & present later in hereditary haemochromatosis?
Menstrual blood loss is protective
What is the gene responsible for most HH?
HFE, recessive
What are the 2 most common mutations in HH?
C282Y
H63D
Give 2 early symptoms of HH
- ) Tiredness
- ) Arthralgia
- ) Decreased libido
Give 2 later symptoms/signs of HH
- ) Slate grey skin pigmentation
- ) Signs of chronic liver disease
- ) Hepatomegaly
- ) Cirrhosis
- )Dilated cardiomyopathy
What 3 things can deposition cause in organs in HH?
- ) Pancreas - DM
- ) Pituitary - hypogonadism
- ) Adrenals - hypoaldosteronism
What stain on a liver biopsy quantifies iron loading? (HH)
Perl’s
What do liver and cardiac MRIs show in HH?
Iron overload
What is the treatment for HH?
Venesect until ferritin decreased, then maintenance for life
What is the treatment if the patient is intolerant of HH?
Desferrioxamine
What other management is there for HH?
- ) No iron in other drugs
- ) Screening
- ) Diet - alcohol, seafood
What does bile contain?
Cholesterol, bile pigments (from broken down Hb), phospholipids
What are pigment gallstones and what are they caused by?
- ) Small, friable, irregular
- ) Haemolysis
What are cholesterol gallstones and what are they caused by?
- ) Large, often solitary
- ) Age, obesity, female
What are mixed gallstones?
-) Faceted (calcium salts, pigment, cholesterol)
What are 2 risk factors for gallstones becoming symptomatic?
Smoking, parity
How do we treat gallbladder stones? (2)
- ) Laparoscopic cholecystectomy
- ) Bile acid dissolution therapy
How do we treat bile duct stones? (3)
- ) ERCP with sphincterotomy and removal
- ) Crushing (mechanical/laser)
- ) Stent placement
What is ascending cholangitis?
Infection of the bile duct
What is ascending cholangitis caused by?
Bacteria ascending from duodenum, occurs more often with stones
What are the 3 main symptoms of ascending cholangitis?
Charcot’s triad
- ) Jaundice
- ) Fever
- ) Abdominal pain
What is Reynold’s triad of symptoms?
Charcot’s triad plus low BP and confusion
What are the most common causative organisms of ascending cholangitis? (2)
- ) E. coli
- ) Klebsiella
How do we treat ascending cholangitis? (3)
- ) Fluid
- ) Antibiotics
- ) Treat obstruction
What is acute cholecystitis?
Inflammation of the gallbladder
What can recurrent episodes of acute cholecystitis cause?
Pancreatitis
What is the pain in acute cholecystitis like?
Continuous epigastric or right upper quadrant pain referred to right shoulder
What symptoms of acute cholecystitis are there?
- ) Pain
- ) Vomiting
- ) Fever
- ) Local peritonism
- ) GB mass
What is Murphy’s sign? (acute cholecystitis)
Lay 2 fingers over the RUQ, when the patient breaths in there is pain and arrest of inspiration
What does an US show in acute cholecystitis?
Thick walled shrunken GB, pericholecystitc fluid, stones, dilated common bile duct
What is the treatment of acute cholecystitis? (4)
- ) NBM
- ) Pain relief
- ) Antibiotics (cefuroxime)
- ) Surgery
What is jaundice?
Yellowing of skin, sclerae, mucosa from increase plasma bilirubin
What on an AXR of a GB shows an increased risk of cancer?
Porcelain GB
What is jaundice classified by? (2)
- ) Site of problem
- ) Type of circulating bilirubin
What are the sites of jaundice? (3)
- ) Pre-hepatic
- ) Hepatocellular
- ) Post-hepatic (cholestatic/obstructive)
What are the types of circulating bilirubin in jaundice? (2)
- ) Conjugated
- ) Unconjugated
What is unconjugated hyperbilirubinaemia caused by? (4)
- ) Overproduction (haemolysis)
- ) Impaired hepatic uptake (drugs)
- ) Impaired conjugation (Gilbert’s)
- ) Physiological neonatal jaundice
Why does unconjugated bilirubin not go into the urine?
Insoluble
What is conjugated hyperbilirubinaemia caused by? (2)
- ) Hepatocellular dysfunction
- ) Impaired hepatic excretion (cholestasis)
What do the urine and faeces look like in conjugated hyperbilirubinaemia?
Urine - dark
Faeces - pale
Give 3 causes of hepatocelluar dysfunction in jaundice
- ) Viruses (hepatitis)
- ) Drugs
- ) Alcohol
- ) Cirrhosis
- ) Liver mets/abscess
- ) Budd-Chiari
- ) Wilson’s
Give 3 causes of impaired hepatic excretion in jaundice
- ) Primary biliary cholangitits
- ) Primary sclerosis cholangitis
- ) Drugs
- ) Common bile duct gallstones
- ) Pancreatic cancer
- ) Compression of bile duct
How is bilirubin formed in the breakdown of haemoglobin? (7)
1) Hepatic uptake
2) In liver, bilirubin conjugated with glucuronic acid by hepatocytes to conjugated bilirubin
3) Secreted in bile and passes into gut
4) Some reuptaken in liver
5) Rest converted to urobilinogen by gut bacteria
6) Urobilinogen reabsorbed and excreted by kidney
7) Or urobilinogen converted to stercobilin for faeces
What is absent in the urine in each stage of jaundice?
- ) Pre-hepatic - no bilirubin
- ) Obstructed - no urobilinogen
- ) Post-hepatic - N/A
What are the 3 mainstays of tests in jaundice?
- ) Liver enzymes (high AST/ALT)
- ) Biliary obstruction on US
- ) Urine
How do we treat jaundice?
- ) Treat cause
- ) Antibiotics if obstruction
- ) Hydration
What is cirrhosis?
Irreversible liver damage
What does cirrhosis look like histologically?
Loss of normal hepatic architecture with bridging fibrosis and nodular regeneration
What are the 3 most common causes of cirrhosis?
- ) Chronic alcohol abuse
- ) HBV
- ) HCV
Give 4 signs of cirrhosis/chronic liver disease
- ) Leuconychia (white nails)
- ) Terry’s nails (proximally white, distal red)
- ) Clubbing
- ) Palmar erythema
- ) Hyperdynamic circulation
- ) Spider nave
- ) Xanthelasma (yellow deposit of cholesterol under skin)
- ) Gynaecomastia (swelling o breast tissue in males)
- ) Loss of body hair
- ) Parotid enlargement
- ) Hepatomegaly
- ) Ascites
- ) Splenomegaly
Give 3 complications of cirrhosis
- ) Hepatic failure
- ) Portal hypertension
- ) HCC
What is the most common serious infection in cirrhosis?
Spontaneous bacterial peritonitis
What are increased (bloods) in cirrhosis? (6)
- ) Bilirubin
- ) AST
- ) ALT
- ) Gamma GT
- ) ALP
- ) PT/INR later
What are decreased (bloods) in cirrhosis? (3)
-) Albumin
-) WCC
-) Platelets
Last 2 indicate hypersplenism
How do we diagnose a spontaneous bacterial peritonitis?
Ascitic tap - neutrophils high presence
What is the treatment for cirrhosis?
- ) Good nutrition
- ) Avoid alcohol, NSAIDs, sedatives, opiates
- ) Colestyramine for pruritis
- ) US screen for cancer
- ) High dose ursodeoxycholic acid in PBC
- ) Penicillamine in Wilson’s disease
What is the treatment for ascites?
- ) Fluid restriction
- ) Low salt diet
- ) Spironolactone
How do we treat spontaneous bacterial peritonitis?
Piperacillin with tazobactam until sensitivities known
What is the only definite treatment/cure for cirrhosis?
Liver transplant
What is portal hypertension?
High blood pressure in the hepatic portal vein
What can portal hypertension lead to? (2)
Varices and haemorrhages
What are the 3 types of causes of portal hypertension?
- ) Pre-hepatic
- ) Intra-hepatic
- ) Post-hepatic
Give 4 causes of portal hypertension
- ) Thrombosis
- ) Cirrhosis
- ) Schistosomiasis
- ) Budd-Chiari syndrome
- ) Right HF
What are gastro-oesophageal varices?
Submucosal venous dilatation secondary to increased portal pressures
What is the management of gastro-oesophageal varices?
Endoscopic banding or sclerotherapy
What is the prophylaxis for gastro-oesophageal varices?
Non-selective beta-blocker, propranolol or repeat endscopic banding
What is the management for resistant gastro-oesophageal varices?
Transjugular intrahepatic porto-systemic shunt
What is a liver abscess?
Pus filled mass inside liver
What is a liver abscess commonly caused by? (2)
Appendicities or diverticulititis due to haematogenous spread
Give 3 symptoms of a liver abscess
- ) Fever
- ) Lethargy
- ) RUQ discomfort
- ) Anorexia
- ) Enlarged liver if chronic
What are common causative bacteria of liver abscesses?
- ) Strep. milleri
- ) E. coli
- ) Klebsiella
- ) Opportunistic staphs
How do we treat a liver abscess?
Antibiotics, percutaneous drainage, possible laparotomy
What is an amoebic liver abscess?
Pus is like ‘anchovy sauce’
What is an amoebic liver abscess due to?
Entamoeba histolytica
What are 3 symptoms of amoebic liver abscesses?
- ) High swinging fever
- ) Sweats
- ) RUQ pain and tenderness
- ) Pallor
- ) Weight loss
How do we treat an amoebic liver abscess? (2)
Aspiration and metronidazole
What does alcoholic liver disease include? (3)
- ) Fatty liver
- ) Alcoholic hepatitis
- ) Cirrhosis
What drug do we give for alcohol withdrawal symptoms?
Chlordiazepoxide
What drug do we give for cravings or anxiety?
Acamprosate
What drug can we give for chronic alcohol dependence?
Disulfiram
What is ascites?
Accumulation of fluid in the peritoneal cavity
What is exudate?
High protein fluid
What is transudate?
Low protein fluid
What does ascites present with? (2)
Swelling of abdomen and SOB
Give 3 signs of ascites
- ) Medusa veins
- ) Possible umbilical hernia
- ) Visible bulging of flanks
- ) Shifting dullness on examination
What is transudate due to in ascites? (3)
- ) Decreased oncotic pressure
- ) High serum to ascites albumin gradient
- ) Outflow problem
What is exudate due to in ascites? (2)
- ) Low serum to ascites albumin gradient
- ) Membrane more porous
Is exudate or transudate worse?
Exudate
Give 2 causes of transudate ascites
Cirrhosis, cardiac failure, Budd-Chiari syndrome
Give 2 causes of exudate ascites
Cancer (ovarian), sepsis, TB, nephrotic syndrome
What can the stasis of fluid in an ascites cause?
Infection - spontaneous bacterial peritonitis
How do we diagnose an ascites?
Paracentesis
Do transudates or exudates have increased pressure on the hepatic portal vein?
Transudates
Are transudates or exudates actively excreted?
Exudates
What occurs in non-alcoholic fatty liver disease? (NAFLD)
Increased fat in hepatocytes with inflammation
Give 4 risk factors for NAFLD
- ) Obesity
- ) Female
- ) DM
- ) Dyslipiaemia
- ) Parenteral feeding
- ) Hyperlipidaemia
- ) Wilson’s disease
How do we distinguish NAFLD from NASH?
Biopsy
What is NASH?
Non-alcoholic steatohepatitis
How do we treat NAFLD?
Control risk factors
What is alpha 1 antitrypsin deficiency?
Inherited conformational disease that commonly affects lungs and liver
What is A1AT?
Glycoprotein (serine protease inhibitor) made in the liver that controls inflammatory cascades
What is Wilson’s disease?
Inherited disorder copper excretion with excess deposition in liver and CNS
What is the genetic component of Wilson’s disease?
Autosomal recessive disorder of a copper transporting ATPase, ATP78
What is impaired in the liver in Wilson’s disease?
Copper incorporation into caeruloplasmin
What do children present with in Wilson’s disease?
Liver disease (hepatitis, cirrhosis)
What do adults present with in Wilson’s disease?
CNS signs (tremor, dysarthria, dysphagia, dementia, ataxia etc)
What is the mood like in Wilson’s disease? (3)
- ) Depression/mania
- ) Changed libido
- ) Personality change
What is cognition like in Wilson’s disease?
Decreased memory, slow to solve problems, decreased IQ, delusions
What are Kayser-Fleischer rings, and in which disease are they found?
Rings of copper in iris, Wilson’s
What 3 other symptoms does Wilson’s present with?
Haemolysis, blue lunulae, arthritis, hyper mobile joints, grey skin
Give 3 tests for Wilson’s
- ) Copper high in urine
- ) Serum caeruloplasmin low
- ) Hepatic copper increased
- ) Genetic testing
What is the management for Wilson’s? (3)
- ) Avoid foods with high copper content
- ) Lifelong penicillamine
- ) Possible liver transplantation
What is acute liver failure?
Suddenly occuring, 8-21 days
What is chronic liver failure?
Occurs with a background of cirrhosis
What is fulminant hepatic failure?
Clinical syndrome resulting from massive necrosis of liver cells, leading to a severe impairment of function
Give 4 causes of liver failure
- ) Viral hepatitis (B, C)
- ) Yellow fever
- ) Paracetamol overdose
- ) Toxins
- ) Budd-Chiari syndrome
- ) Alcohol
- ) Fatty liver disease
- ) PBC
- ) PSC
- ) Autoimmune hepatitis
- ) A1AT deficiency
- ) Wilson’s
- ) Malignancy
Give 3 signs of liver failure
- ) Jaundice
- ) Hepatic encephalopathy
- ) Fector hepaticas (pear drop smell)
- ) Asterixis/flap
- ) Apraxia
Give 4 tests for liver failure
- ) Blood
- ) Microbiology
- ) Radiology, Doppler flow
- ) Neurophysiology
What is the treatment for liver failure?
- ) Intubate, NGT, catheter
- ) Monitor
- ) Glucose 10% to avoid hypoglycaemia
- ) Treat cause
- ) Treat complications
What drug is given for seizures?
Phenytoin/lorazepam
What do we do if there is renal failure?
Haemofiltration/haemodialysis
Give 3 complications of liver failure
- ) Cerebral oedema
- ) Ascites
- ) Bleeding
- ) Infection
- ) Hypoglycaemia
- ) Encephalopathy
What is the drug treatment for paracetamol poisoning?
N acetyl cysteine
What is the drug given for cerebral oedema?
Mannitol
What type of virus is hepatitis A?
RNA virus
How is hepatitis A spread?
Faecal-oral or shellfish
Give 3 symptoms of hepatitis A
- ) Fever
- ) Malasie
- ) Anorexia
- ) Nausea
- ) Arthralgia
- ) Then jaundice, hepatosplenomegaly, adenopathy
What Ig shows that it is a recent infection?
IgM
What 2 things are raised in hepatitis A?
ALT and AST
What is ALT?
Alanine aminotransferase
What is AST?
Aspartate aminotransferase
What is the treatment for hepatitis A?
Supportive, avoid alcohol
Which hepatitis types are chronic? (or can be)
B, C, D
What do we give for fulminant hepatitis?
Interferon alfa
What type of virus is hepatitis B?
DNA virus
How is hepatitis B spread?
Blood/sexual
Give 3 risk groups for hepatitis B
- ) IVDU
- ) Sexual partners/carers
- ) Health workers
- ) Haemophiliacs
- ) MSM
- ) Haemodialysis
- ) etc
How does hepatitis B present?
Resembles hepatitis A but arthralgia and urticaria are more common
Give 2 antigens present in stages of hepatitis B
HBsAg - 1-6 months after exposure, >6 months means carrier, alone means vaccination
HBeAg - 1.5-3 months after illness, high infectivity
HBcAg - past infection
Is hepatitis B highly infective?
Yes
Give 3 complications of hepatitis B
- ) Fulminant hepatic failure
- ) Cirrhosis
- ) HCC
What is the treatment for hepatitis B?
- ) Avoid alcohol
- ) Immunise sexual contacts
- ) Antivirals for chronic liver inflammation (tenofovir, entecavr)
What type of virus is hepatitis C?
RNA flavivirus
How is hepatitis C spread?
Blood/sexual
Give 2 risk factors for progression of hepatitis C?
- ) Male
- ) Older
- ) Higher viral load
- ) Alcohol
- ) HIV, HBV
Is hepatitis C more acute or chronic?
Chronic (C for chronic!)
The presence of what confirms exposure to hepatitis C
Anti-HCV antibodies
What is the treatment for hepatitis C?
Avoid alcohol, pegylated interferon with ribavirin and protease inhibitor
Give 2 complications of hepatitis C
- ) Glomerulonephritis
- ) Autoimmune hepatitis
- ) Thyroiditis
- ) Cryoglobulinaemia
- ) PAN
What is higher in a LFT in hepatitis C?
ALT
What type of virus is hepatitis D?
Incomplete RNA virus
What does hepatitis D need for its assembly?
HBV
What can hepatitis D cause?
Acute liver failure/cirrhosis
What can prevent hepatitis D?
HBV vaccination
What type of virus is hepatitis E?
RNA virus
Is HAV or HEV more common in the UK?
HEV
How does hepatitis D spread?
Blood/seuxal
How does hepatitis E spread?
Faeco-oral
What is non alcoholic steatohepatitis?
NAFLD with inflammation
What is autoimmune hepatitis?
An inflammatory liver disease of unknown cause characterised by abnormal T cell function and autoantibodies directed against hepatocyte surface antigens
What does (some) autoimmune hepatitis present with?
- ) Acute hepatitis
- ) Signs of autoimmune disease (fever, malaise, rash, poly arthritis, glomerulonephritis)
- ) Jaundice
- ) Asypmtomatic
What antibodies are usually positive in autoimmune hepatitis? (2)
ANA and ASMA
What does a liver biopsy show in autoimmune hepatitis?
Mononuclear infiltrate of portal and periportal areas and piecemeal necrosis +/- fibrosis
How do we diagnose autoimmune hepatitis?
Exclude other diseases, look at IgG, autoantibodies, histology
What is the management of autoimmune hepatitis?
Immunosuppression with prednisolone +/- azathioprine
Give 3 risk factors for oesophageal cancer
- ) Diet
- ) Alcohol excess
- ) Smoking
- ) Achalasia
- ) Reflux oesophagitis +/- Barrett’s oesophagus
- ) Obesity
- ) Hot drinks
- ) etc
What is Barrett’s oesophagus also known as?
CELLO - columnar lined lower oesophagus
Where does oesophageal cancer occur most?
In the middle (50%)
Give 3 symptoms/signs of oesophageal cancer
- ) Dysphagia
- ) Weight loss
- ) Retrosternal chest pain
- ) Upper 1/3rd of oesophagus - hoarseness, cough
What is the main investigation for oesophageal cancer?
Oesophagoscopy with biopsy
What are the 5 T stages of oesophageal cancer?
Tis - carcinoma in situ T1 - invading lamina propria/submucosa T2 - muscularis propria T3 - adventitia T4 - adjacent structures
What are the survival rates of oesophageal cancer like?
Poor with/without treatment :(
What are some options for treatment of oesophageal cancer?
- ) Radical curative oesophagectomy
- ) Pre-op chemo
- ) Chemoradiotherapy
- ) Palliation with chemo/radio, stenting to restore swallowing
What type of cancer can oesophageal be? (2)
- ) Squamous cell (proximal)
- ) Adenocarcinomas (distal)
Give 3 risk factors for gastric cancer
- ) Pernicious anaemia
- ) Blood group A
- ) H. pylori
- ) Atrophic gastritis
- ) Smoking, diet (pickled food), lower social class)
What are the symptoms of gastric cancer?
- ) Often non-specific
- ) Dyspepsia
- ) Weight loss
- ) Vomiting
- ) Dysphagia
- ) Anaemia
Give 2 signs of gastric cancer
- ) Epigastric mass
- ) Hepatomegaly
- ) Jaundice
- ) Ascites
What is the spread of gastric cancer?
Local, lymphatic, blood bourne, transcoelomic (eg to ovaries)
What are the tests for gastric cancer?
Gastroscopy and multiple ulcer edge biopsies
What are the treatments for gastric cancer?
- ) Gastrectomy - total/partial
- ) Combination chemotherapy
- ) Surgical palliation
What may be given as a target therapy for HER-2 positive tumours?
Trastuzumab
What is the commonest predisposing factor for bile duct and gallbladder cancers?
Primary sclerosis cholangitis
Give 3 presenting features of bile duct and gallbladder cancer
- ) Obstructive jaundice
- ) Pruritus
- ) Abdominal pain
- ) Weight loss
- ) Anorexia
How do we treat bile duct and gallbladder cancer?
Surgical resection if operable
Give 3 predisposing factors to colorectal cancer
- ) Neoplastic polyps
- ) IBD
- ) Genetic predisposition
- ) Diet (low fibre, high red meat)
- ) Alcohol
- ) Smoking
- ) Previous cancer
What drug reduces the incidence and mortality of colorectal cancer?
Daily aspirin
What is familial adenomatous polyposis (FAP) due to?
Germline mutations in the APC tumour suppressor gene
What are the 2 genetic predispositions to colorectal cancer?
FAP and HNPCC
What prevents cancer in those with FAP?
Total colectomy
What is HNPCC?
Hereditary non-polyposis colorectal cancer entails familial aggregation of colorectal cancer
Where are the mutations in HNPCC 1?
1/5 DNA mismatch repair genes
Is HNPCC autosomal dominant or recessive?
Dominant
What do virtually all colorectal cancers develop from?
Adenomatous polyps
Give 3 symptoms of left sided colorectal cancer
- ) Bleeding/mucus PR
- ) Altered bowel habit/obstruction
- ) Tenesmus
- ) Mass PR
Give 2 symptoms of right sided colorectal cancer
- ) Weight loss
- ) Low haemoglobin
- ) Abdominal pain
Give 3 symptoms of either sided colorectal cancer
- ) Abdominal mass
- ) Perforation
- ) Haemorrhage
- ) Fistula
Give 3 tests for colorectal cancer
- ) PR
- ) Sigmoidoscopy/colonscopy
- ) Faecal occult blood
- ) FBC
What is the NHS screening programme for colorectal (bowel) cancer?
Faecal occult blood (FOB) every 2 years if 60-75yrs
What is the spread of colorectal cancer?
Local, lymphatic, by blood (liver, lung, bone), transcoelomic
What is the Duke’s classification of colorectal cancer?
A - limited to muscular mucosae
B - extension through muscular mucosae
C - involvement of regional lymph nodes
D - distant mets
What is the TNM staging in colorectal cancer? (T)
Tx - primary tumour cannot be assessed Tis - carcinoma in situ T1 - invading submucosa T2 - muscular propria T3 - subserosa and beyond (not other organs) T4 - adjacent structures
What is the TNM staging in colorectal cancer? (N)
Nx - nodes cannot be assessed
N0 - no node spread
N1 - mets in 1-3 regional nodes
N2 - mets in >3 regional nodes
What is the TNM staging in colorectal cancer? (M)
M0 - no distant spread
M1 - distant mets
What does a positive CRM (circumferential resection margin) have a large risk of?
Local recurrence and lower survival
What is the treatment for colorectal cancer? (5)
- ) Right hemicolectomy - caecal, ascending, proximal transverse
- ) Left hemicolectomy - distal transverse, descending
- ) Sigmoid colectomy - sigmoid
- ) Anterior resection - low sigmoid, high rectal
- ) Abdomino-perianal - low in rectum
What procedure do we do in emergency bowel obstruction, perforation or palliation?
Hartmann’s
When is radiotherapy used in colorectal cancer? (3)
- ) Palliation
- ) Pre-op rectal cancer
- ) Post-op rectal cancer with high risk of local recurrance
When is chemotherapy used in colorectal cancer? (2)
- ) Palliative
- ) Adjuvant for stage 3 disease (FOLFOX)
What improves survival when added to combination therapy in advanced colorectal cancer?
Bevacizumab, anti VEGF antibody
What improves response and survival in KRAS wild type metastatic colorectal cancer?
Cetuximab and panotumumab
Where are adenocarcinomas of the SB usually found? (2)
Duodenum and jejunum
Where are lymphomas (non-Hodgkin’s) usually found?
Ileum
Give 2 predisposing factors to small bowel cancer
Coeliac disease, Crohn’s
Give 3 risk factors for pancreatic cancer
- ) Smoking
- ) Alcohol
- ) Carcinogen
- ) DM
- ) Chronic pancreatitis
- ) Obesity
What are most types of pancreatic cancer?
Ductal adenocarcinomas
Where do pancreatic cancers present?
- ) 60% head
- ) 25% body
- ) 15% tail
Mutations in which gene is present in 95% of pancreatic cancer cases?
KRAS2
What do tumours of the pancreatic head present with?
Painless obstructive jaundice
What do tumours of the body and tail present with?
Epigastric pain radiating to back, relieved by sitting forwards
What can any pancreatic cancer present with?
- ) Anorexia
- ) Weight loss
- ) DM
- ) Acute pancreatitis
Give 3 signs of pancreatic cancer
- ) Jaundice
- ) Palpable gallbladder
- ) Epigastric mass
- ) Hepatomegaly
- ) Splenomegaly
- ) Lymphadenopathy
- ) Ascites
What tests do we do to diagnose pancreatic cancer?
US/CT
What is the treatment for pancreatic cancer?
- ) Resection surgery - pancreaticoduodenectomy (Whipple’s) only when curative
- ) Tail lesions easiest
- ) <20% suitable for surgery
- ) Stent insertion for palliation
- ) Opiates
The commonest (90%) of liver tumours are from where? (3)
Breast, bronchus, GI tract
What is primary HCC caused by? (3)
- ) HBV
- ) HCV
- ) Cirrhosis
Give 4 symptoms of liver tumours
- ) Fever
- ) Malaise
- ) Anorexia
- ) Weight loss
- ) RUQ pain
- ) Late jaundice (except with HCC)
What are the signs of a liver tumour?
Hepatomegaly, chronic liver disease signs, decompensation, abdominal mass, bruit over liver
What (bloods) is found in 50-80% of HCC?
Alpha-fetoprotein
What tests can we do to diagnose liver cancer?
- ) Bloods
- ) US/CT
- ) MRI
- ) Biopsy
What does HCC stand for?
Hepatocellular carcinoma
How do we treat liver tumour mets?
- ) Chemo maybe
- ) Resection maybe
- ) Palliation
How do we treat primary HCC?
- ) Resect small solitary tumours
- ) Liver transplant
- ) Percutaneous ablation
- ) Sorafenib
How do we treat cholangiocarcinoma?
Surgery, usually not suitable and recur, stenting possible
What is a cholangiocarcinoma?
Biliary tree cancer
Give 4 causes of infection
- ) Norovirus
- ) E. coli
- ) Giardia
- ) Salmonella
- ) C. diff
What is a Mallory Weiss tear?
Persistent vomiting/retching causes haematemesis via and oesophageal mucosal tear
Where does the tear occur most often? (MW tear)
Lower oesophagus close to junction with stomach
Give 2 causes of a Mallory Weiss tear
- ) Alcohol
- ) Bulimia
- ) Pregnancy
What is achalasia?
Coordinated peristalsis is lost and the lower oesophageal sphincter fails to relax (due to degeneration of the myenteric plexus)
Give 3 things achalasia causes
- ) Dysphagia
- ) Regurgitation
- ) Weight loss
What does a barium swallow/manometry in achalasia show?
Dilated tapering oesophagus
What is the treatment for achalasia?
- ) Endoscopic balloon dilatation
- ) Heller’s cardiomyotomy
- ) PPIs
What occurs in tropical sprue? (3)
- ) Villous atrophy
- ) Inflammation of small interstine
- ) Malabsorption
Give 3 symptoms of tropical sprue
- ) Diarrhoea
- ) Fever
- ) Malaise
- ) Later weight loss, anorexia, nutritional deficiencies
What is the only cure of tropical sprue?
To leave the infected area
What are haemorrhoids?
Disrupted and dilated anal cushions
What are anal cushions?
The anus is lined mainly by discontinuous masses of spongy vascular tissue (anal cushions), which contribute to anal closure
Give 2 causes of haemorrhoids
- ) Increased anal tone (stress)
- ) Straining due to constipation
- ) Other congestion (tumour, pregnancy)
Give 2 symptoms of haemorrhoids
- ) Bright red rectal bleeding
- ) Mucus discharge
- ) Pruritus
- ) Severe anaemia
How do we diagnose haemorrhoids?
PR exam, abdominal exam, colonoscopy/flexible sigmoidoscopy
What is the pathogenic circle of haemorrhoids?
1) Vascular cushions protrude through a high anus
2) Become more congested
3) Hypertrophy to protrude again more readily
4) Protrusions may strangulate
What is the medical treatment for haemorrhoids?
Medical - fluid and fibre, stool softener, topical analgesics
What is the non medical treatment for haemorrhoids?
- ) Rubber band ligation
- ) Sclerosant injections
- ) Infra red coagulation
- ) Bipolar diathermy and direct current electroptherapy
What is the surgical treatment for haemorrhoids?
Excisional haemorrhoidectomy
What is a fistula-in-ano?
A track communicated between the skin and the anal canal/rectum
What is the pathogenesis of a fistula-in-ano?
Blockage of deep intramuscular gland ducks thought to predispose to formation of abscesses. which discharge to form the fistula
Give 3 causes of a fistula-in-ano
- ) Perianal sepsis
- ) Abscesses
- ) Crohn’s
- ) TB
- ) Diverticular disease
- ) Rectal carcinoma
- ) Immunocompromise
What are the tests for a fistula-in-ano?
MRI and endoanal US
What is the treatment for a fistula-in-ano?
Fistulotomy and excision
What is a fissure-in-ano?
A painful tear in the squamous lining of the lower anal canal
Are fissures-in-ano most anterior or posterior?
Posterior (90%)
What is the main cause of fissures-in-ano?
Hard faeces
What is the treatment for fissures-in-ano?
- ) 5% lidocaine ointment and GTN ointment
- ) Increase fibre and fluids
- ) Stool softener
- ) Topical botulinum and diltiazem
What is a perianal abscess?
Anorectal abscesses
What are perianal abscesses usually caused by?
Gut organisms
What are perianal abscesses associated with?
DM, Crohn’s, malignancies, fistulaes
What is the treatment for a perianal abscess?
Incision and drainage
What is a pilonidal sinus?
Obstruction of the natal cleft hair follicles around 6cm above the anus
What does the ingrowing of hair in a pilonidal sinus do?
Excites a foreign body reaction and may cause secondary tracts to open laterally +/- abscesses with foul smelling discharge
Give 2 risk factors for a pilonidal sinus
Male, obese
What is the treatment of a pilonidal sinus?
Excision of the sinus tract +/- primary closure
What is biliary colic?
Pain from symptomatic gallstones if there is cystic duct obstruction or if the gallstones have passed into the common bile duct
What does biliary colic present with?
RUQ pain which radiates to back, possible jaundice
What is the treatment for biliary colic?
Analgesia, rehydration, NBM
What symptom would indicate IBD not IBS?
Nocturnal diarrhoea
What is the cystic artery a branch of?
Right hepatic artery
What is the treatment for peptic ulcers?
PAC MAN
PPI
Amoxicillin
Clarithromycin
Give the urine, stools, itching and liver tests in pre-hepatic jaundice
Urine - normal
Stools - dark/normal
Itching - none
Liver tests - normal
Give the urine, stools, itching and liver tests in hepatic jaundice
Urine - dark
Stools - pale
Itching - maybe
Liver tests - abnormal
Give the urine, stools, itching and liver tests in post-hepatic jaundice
Urine - dark
Stools - clay
Itching - yes
Liver tests - abnormal