Gastroenterology Flashcards
What are aphthous ulcers?
Shallow, painful ulcers with inflammatory haloes that heal without scarring
Often recur
List aetiology/risk factors for aphthous ulcers
Inflammatory bowel disease Iron deficiency Infection Trauma Pemphigus/pemphigoid
Outline treatment for aphthous ulcers
Avoid oral trauma, acidic food/drink
Steroid lozenges
Tetracycline/antimicrobial mouthwash
Oral prednisolone if severe
What is leucoplakia?
Mucosal white patch that does not rub off and is not attributable to another disease process
Usually pre-malignant
List aetiology/risk factors of leucoplakia
EB virus causes oral hairy leucoplakia esp in HIV
Transient candidiasis/SLE/trauma
All leucoplakia should be referred for biopsy. True/False?
True, when in doubt
What is oral thrush?
White patches on buccal mucosa caused by candidiasis
List aetiology/risk factors for oral thrush
Elderly Immunosuppression Diabetes Antibiotics Long-term steroid + inhaler use Malignancy
Outline treatment for oral thrush
Nystatin suspension
Amphoterecin lozenges
Oral fluconazole
Describe the typical appearance of oral squamous cell carcinoma
Raised ulcer with firm edges
Found at floor of mouth or on lateral tongue
List aetiology/risk factors for oral squamous cell carcinoma
Smoking
Alcohol
Family history
Soft areas are high-risk sites
Outline treatment for oral squamous cell carcinoma
Radiotherapy
Surgery
What is GORD?
Reflux of stomach acid causes inflammation of oeseophagus
Can lead to basal zone hyperplasia and metaplasia
List aetiology/risk factors for GORD
Incompetent lower oeseophageal sphincter Hiatus hernia Obesity Increased acid secretion Pregnancy Achalasia surgery Overeating/heavy fatty meals Drugs (tricyclics, anticholinergics, nitrates) H. pylori
List clinical features of GORD
"Heartburn" Worse lying down and after meals Relieved by antacid Belching, regurgitation of food Waterbrash Odynophagia Nocturnal asthma/cough Laryngitis
What investigations would you do for GORD?
Trial PPI for 2 weeks + antacid
Endoscopy if over 55 yo, symptoms longer than 4 weeks, dysphagia or weight loss
24h manometry +/- pH monitoring if normal endoscopy
Barium swallow if indicated e.g. hernia
Outline treatment of GORD
Lifestyle improvement (smoking, weight, raise bed, small regular meals, avoid hot/spicy food/drinks)
Antacid for symptom relief
PPI (omeprazole)
H2 antagonist may be tried (ranitidine)
Surgery (endoscopic fundoplication to repair LOS) if unresponsive
What is Barett’s oesophagus?
Metaplastic change from stratified squamous to columnar epithelium due to persistent acid abuse
Mucosa becomes unstable and susceptible to dysplasia
How would you investigate Barett’s oesophagus?
Endoscopy and biopsy
Outline treatment of Barett’s oesophagus
Avoid acidic food/drink
PPI
Argon
Mucosal resection/RF ablation
What is achalasia?
Failure of relaxation of lower oesophageal sphincter due to degeneration of myenteric plexus
List clinical features of achalasia
Intermittent dysphagia
Regurgitation
Substernal pain/cramping
Weight loss
What investigations would you do for achalasia?
CXR shows dilated oesophagus
Barium swallow shows bird-beak appearance
Outline treatment of achalasia
Endoscopic balloon dilation
Heller’s cardiomyotomy + PPI
Botox injection
Ca channel blocker
What are the most common types of oesophageal cancer?
Squamous or adenocarcinoma
50% middle oesophagus, 30% lower oesophagus, 20% upper oesophagus
List aetiology/risk factors for oesophageal cancer
Low vitamin A and/or C Smoking Alcohol excess Achalasia Plummer-Vinson syndrome Obesity Barett's oesophagus Reflux oesophagitis
List clinical features of oesophageal cancer
Dysphagia Weight loss Retrosternal chest pain Hoarse voice Cough
What investigations would you do for oesophageal cancer?
Barium swallow
CXR
Endoscopy + biopsy
CT staging
Outline treatment of oesophageal cancer
Palliative care
Surgery if no invasion/wide mets/poor fitness
If localised T1/T2 disease, may try radical oesophagectomy
What is gastritis?
Inflammation and mucosal injury to stomach lining
List aetiology/risk factors for gastritis
Acute (chemicals, trauma, burns, infection)
H. pylori
Chronic (NSAID, alcohol, GORD, smoking)
Autoimmune (pernicious anaemia)
List clinical features of gastritis
Heartburn
Epigastric pain, esp on eating/hunger
Bloating, fullness
ALARM Symptoms (anaemia, loss of weight, anorexia, recent onset, malaena, swallowing difficulty)
What investigations would you do for gastritis?
Less than 55yo: test of H. pylori
Over 55yo or ALARM Symptoms: endoscopy
Outline treatment for gastritis
Stop dyspeptic drugs, lifestyle changes
Antacids
PPI
H2 antagonists
Duodenal ulcers are more common than gastric ulcers. True/False?
True
List aetiology/risk factors for peptic ulcer disease
H. pylori Drugs (NSAID, steroid) Smoking Reflux disease Increased gastric acid secretion Delayed gastric emptying Blood group O Stress Neurosurgery (increased ICP, Cushing ulcers)
List clinical features of peptic ulcer disease
Epigastric pain, esp meal-related, relieved by drinking/eating cold stuff
May have weight loss
Epigastric tenderness
Feeling of fullness
What investigations would you do for peptic ulcer disease?
H. pylori stool antigen/C13 breath test/IgG serology
Stop PPI 2 weeks before endoscopy
Ulcer biopsy for histology and cytology
Outline treatment for peptic ulcer disease
H. pylori eradication (amoxicillin/metronidazole, omeprazole, clarithromycin)
Bismuth chealate alternative to antibiotics
Antacids
PPI
H2 antagonists
What is gastroparesis?
Delayed gastric emptying due to autonomic neuropathy
List clinical features of gastroparesis
Fullness, bloating
Nausea, vomiting
Weight loss
Abdo pain
What investigation would you do for gastroparesis?
Gastric scintigraphy with 99-technitium meal
Outline treatment for gastroparesis
Anti-emetic Tetracycline Erythromycin has anti-emetic properties Liquid diet Nutritional support, NG tube
Which type of gastric cancer is most common?
Adenocarcinoma occuring at gastro-oesophageal junction
List aetiology/risk factors for gastric adenocarcinoma
H. pylori causing gastritis causing metaplasia causing dysplasia causing carcinoma ! Japanese people Pernicious anaemia Blood group A Atrophic gastritis Smoking Poor diet
List clinical features of gastric cancer
Epigastric pain Dyspepsia Weight loss Haematemesis Dysphagia Epigastric mass Anaemia Hepatomegaly, jaundice Enlarged left supraclavicular node (Virchow's node)
What investigations would you do for gastric cancer?
Gastroscopy and multiple biopsies
USS/CT staging
Outline treatment of gastric cancer
If distal 2/3, partial gastrectomy
If proximal 1/3, total gastrectomy
Combination chemotherapy
What type of blood would make you think of an upper GI bleed?
Haematemesis with dark coffee ground substance
Malaena with black tarry stools
List aetiology/risk factors for upper GI bleeding
Peptic ulcers (45%) Gastritis (15%) Oesophageal varices Mallory-Weiss tear Reflux oesophagitis Malignancy Drugs (NSAID, steroid, thrombolytic, anticoagulants)
List clinical features of upper GI bleeding
Peripheral shutdown (cool, clammy, prolonged cap refill) Reduced Glasgow Coma Score Haematemesis Malaenia Tachycardia, hypotension Weight loss Dysphagia Signs of chronic liver disease
What investigations would you do for upper GI bleeding?
Organise CXR, ECG, ABG’s
Crossmatch blood
Urgent endoscopy
Severity 100 rule (systolic less than 100, pulse over 100, Hb less than 100)
Rockall scoring to predict rebleed and mortality
Outline basic treatment of upper GI bleeding
ABCDE approach
Large bore IV cannulae, take blood for crossmatch, FBC, U+E, LFT, clotting
Transfuse O- blood
Catheterise and monitor urine output
Outline treatment for peptic ulcer upper GI bleed
IV PPI after endoscopy
Oral fluids if no haemodynamic compromise
Adrenaline injection
Heater probe coagulation/surgical clipping
Outline treatment for oesophageal varices
Terlipressin
Early OGD + EVL (Sengstaken-Blakemore tube)
Propranolol and banding if bleed stops
TIPSS if rebleeds
What is oesophageal varices?
Portal hypertension causes dilated collateral veins usually in lower oesophagus
List aetiology/risk factors for oesophageal varices
Pre-hepatic (portal vein thrombosis, splenic vein thrombosis)
Intra-hepatic (cirrhosis, schistosomiasis, sarcoidosis)
Post-hepatic (Budd-Chiari, right heart failure, pericarditis)
Alcohol abuse
What is coeliac disease?
T-cell mediated autoimmunity to gluten, causing malabsorption and villus atrophy
List aetiology/risk factors for coeliac disease
HLA DQ2/DQ8
Autoimmunity
Dermatitis herpetiformis
List clinical features of coeliac disease
Steatorrhoea Diarrhoea Abdo pain Bloating Nausea, vomiting Aphthous ulcers Angular stomatitis Weight loss Fatigue Weakness Mood disorder
What investigations would you do for coeliac disease?
Antibodies: alpha-gliadin, ttG, endomysial
Duodenal biopsy shows intraepithelial lymphocytes, subtotal villus atrophy, crypt hyperplasia
DEXA scan to assess osteoporosis
Outline treatment of coeliac disease
Gluten-free diet
Oral dapsone
List aetiology/risk factors for intestinal failure
Coeliac disease Chronic pancreatitis Inflammatory bowel disease Extensive surgery (short-gut syndrome) Reduced bile secretion Whipple's disease Drugs (metformin) Bacterial overgrowth
List clinical features of intestinal failure
Diarrhoea Weight loss Lethargy Steatorrhoea Anaemia Bleeding Oedema Neuropathy
What investigations would you do for intestinal failure?
FBC, U+E, folate/B12 Coeliac screen Albumin Stool microscopy Barium follow-through Breath hydrogen (bacteria) Endoscopy + biopsy
Outline treatment of intestinal failure
Acute: parenteral nutrition via central/peripheral vein
Oral refeeding with supplements
Enteral feeding (NG, NJ, PEG)
Total parenteral nutrition
List aetiology/risk factors of small bowel obstruction
Luminal (gallstone ileus, food, bezoar, tumour)
Occlusion (atherosclerosis, strangulation, hernia, adhesion)
IBD
Intussuception
Constipation
Paralytic ileus
List clinical features of small bowel obstruction
Abdo colicky pain Distention Tenderness Tinkly bowel sounds Faeculent vomiting Constipation
What investigations would you do for small bowel obstruction?
Abdo XR shows valvulae conniventes - central gas shadows that completely cross lumen
FBC, U+E, ABG’s
Enema XR
PR exam
Outline treatment of small bowel obstruction
Analgesia, fluids, nutritional replacement
Drip + suck NG tube
Catheterisation
Surgery if perforation/strangulation/ischaemia
What is gastric volvulus?
Twisting of gastro-oesophageal junction
List aetiology/risk factors for gastric volvulus
Paraoesophageal hernia
Congenital anomaly
Bowel malformation
Pyloric stenosis
List clinical features of gastric volvulus
Vomiting, wretching Pain Failure to pass NG tube Saliva regurgitation Dysphagia Noisy gastric peristalsis relieved by lying down
What investigation would you do for gastric volvulus?
Erect AXR shows gastric dilation and fluid level
Outline treatment of gastric volvulus
Resuscitation
Laparoscopic surgery
What is Meckel’s diverticulum?
Remnant of ompalomesenteric duct, 60cm from ileeocaecal valve, containing gastric and pancreatic tissue
List clinical features of Meckel’s diverticulum
Asymptomatc
Painless malaena
Abdo pain
Outline treatment of Meckel’s diverticulum
Laparoscopic surgical resection if bothersome
What is Crohn’s disease?
Chronic inflammatory disease characterised by transmural granulomatous inflammation affecting any part of the GI tract
List aetiology/risk factors for Crohn’s disease
Genetics (NOD2, CARDI5)
Smoking
Infective gut commensals
Typically young children to 40 year olds
List clinical features of Crohn’s disease
Diarrhoea Abdo pain Weight loss Fever Malaise Skin tags Painful ulcers Abscesses Abdo mass Perianal abscess, fistulae Extra-intestinal (clubbing, erythema nodosum, pyoderma gangrenosum, conjunctivitis, episcleritis, arthritis)
What investigations would you do for Crohn’s disease
Bloods
Stool microscopy and culture to exclude infection
Sigmoidoscopy, rectal biopsy/colonoscopy/capsule endoscopy
MRI for pelvic disease/fistulae
Outline treatment for Crohn’s disease
Oral prednisolone short-term
Admit if severe attack for IV steroid
Immunosuppression (azathioprine, methotrexate)
Anti-TNF (infliximab)
Surger (resection, stricturoplasty, fistula repair)
Treat perianal disease
What is ulcerative colitis?
Relapsing and remitting inflammatory bowel disease involving rectum and extending proximally (no skip lesions)
List aetiology/risk factors for ulcerative colitis
E. coli adhesin-expressing strains
Genetics
Typically 20-40 year ols
List clinical features of ulcerative colitis
Gradual diarrhoea, bloody/mucousy Crampy abo pain Increased bowel frequency Urgency Tenesmus Incontinence Night-rising Lower abdo pain Extra-intestinal (clubbing, erythema nodosum, apthous ulcers, episcleritis)
Define severe ulcerative colitis
More than 6 bloody stools a day + 1 of Fever Tachycardia Anaemia Raised ESR
What investigations would you do for ulcerative colitis?
Bloods
Stool microscopy and culture, C. diff toxin
AXR mucosal thickening, toxic megacolon query
Sigmoidoscopy/colonoscopy
Biopsy shows crypt abscesses, inflammatory infiltrate
Outline treatment of ulcerative colitis
Mild: prednisolone + mesalazine, foam enema
Mod: prednisolone + 5-ASA + steroid enema
Sev: IV hydrocortisone, rectal steroid, stepdown to Mod treatment
Immunosuppresion
Anti-TNF
Surgery (proctocolectomy with end ileostomy, ileorectal anastomosis/pouch)
What is diverticular disease?
Outpouching of the gut wall, usually due to high luminal pressure, usually at sigmoid colon
Diverticulitis: inflamed diverticula
What is the main cause of diverticular disease?
Low-fibre diet
List clinical features of diverticular disease
Abdo pain Altered bowel habit Nausea PR bleed Flatulence
What investigations would you do for diverticular disease?
PR exam
Sigmoidoscopy
Barium enema
CT scan
Outline treatment of diverticular disease
Increase fibre intake Percutaneous drainage Hartmann procedure (remove sigmoid colon, attach colostomy)
Outline treatment for diverticulitis
Co-amoxiclav + metronidazole Analgesia Nil by mouth, IV fluids Drain abscesses Hartmann procedure
What is irritable bowel syndrome?
Functional GI disorder with abdo symptoms with no identifiable cause
List aetiology/risk factors for irritable bowel syndrome`
Visceral hypersensitivity Poor diet Infection Codeine Psychiatric disease
List clinical features of irritable bowel syndrome
Bloating Abdo pain Increased frequency Mucus stool Tenesmus Worse after eating
What red flags would point away from a diagnosis of irritable bowel syndrome?
Age over 50 Recent onset Night waking Weight loss Anaemia Bloody diarrhoea
What is the Rome III criteria for irritable bowel syndrome?
Abdo pain for 3 days per month for 3 months + 2 of
Improvement with defecation
Change in frequency
Chang in appearance of stool
Outline treatment of irritable bowel syndrome
Improve diet Fewer meals Symptom relief Antispasmodic (mebeverine, hyoscine) Antidiarrhoeal (loperamide) Antidepressant
What is pseuomembranous colitis?
Colitis caused by C. diff infection (gram + superbug)
List aetiology/risk factors for pseudomembranous colitis
Elderly
Hospitalisation
Broad-spec antibiotics
List clinical features of pseudomembranous colitis
Colicky pain
Fever
Diarrhoea +/- blood
Multiorgan failure
What investigations would you do for pseudomembranous colitis?
C. diff stool toxin - culture, ELISA, PCR
Colonoscopy shows yellow adherent plaques on inflamed mucosa
Outline treatment of pseudomembranous colitis
Stop causative antibiotic
Metronidazole oral if moderate
Vancomycin oral if severe
Urgent colectomy if toxic megacolon
What is the Rome criteria for constipation?
Constipation + presence of 2 symptoms during bowel movements (straining, lumpy stools, tenesmus, sensation of anorectall obstruction, manual maneuvres)
Less than 3 movements a week
List aetiology/risk factors for constipation
Poor diet Low exercise Inappropriate environment Anal disease Intestinal obstruction Metabolic (hypercalcaemia, hypothyroid, hypokalaemia) Drugs (opiates, anticholinergics, iron) Neuromuscular disorder Chronic laxative use Psych disturbance
What investigations would you do for constipation?
PR exam Stool exam Refer if weight loss/blood/anaemia Sigmoidoscopy Barium enema
Outline treatment for constipation
Lifestyle advice Stool softeners Senna Bulking agents Lactulose Stimulant/osmotic laxatives
What is jaundice?
Yellow pigmentation of skin, sclerae and mucosa due to increased plasma bilirubin
List prehepatic causes of jaundice
Excess haemolysis
Ineffective erythropoiesis
Kernicterus (infants deposit Br in basal ganglia)
List intrahepatic causes of jaundice
Hepatitis Cirrhosis Pregnancy Haemochromatosis Alpha-1-antitrypsin deficiency Budd-Chiari syndrome Wilson's disease
List post-hepatic causes of jaundice
Gallstones Primary biliary cirrhosis Primary sclerosing cholangitis Pancreatic cancer Biliary stricture
List drugs that can cause jaundice
Antimalarials Paracetamol overdose TB drugs Sodium valproate Flucloxacillin
List clinical features of jaundice
Yellow eyes/skin Hepatosplenomegaly Ascites Chronic liver disease signs Pale stools, dark urine (obstructive jaundice)
What investigations would you do for jaundice?
LFT's FBC, U+E Viral markers Urinary bilirubin Clotting US scan to assess bile ducts MRCP/ERCP if gallstones
Acute liver failure only occurs in a previously healthy liver. True/False?
True
What is fulminant hepatic failure?
Severe liver impairment in less than 2 weeks
What is hyperacute liver failure?
Encephalopathy within 7 days of onset of jaundice
List aetiology/risk factors for liver failure
Infection (hepatitis, yellow fever, CMV, EBV)
Drugs (paracetamol OD, isoniazinde, azathioprine, methotrexate, oestrogen)
Budd-Chiari syndrome
Wison’s disease
Alcohol excess
Malignancy
Fatty liver
List clinical features of liver failure
Jaundice Encephalopathy Pear drops breath Asterixis Lethargy Itch, pain Hypoglycaemia Signs of chronic liver disease
What investigations would you do for liver failure?
Deranged LFT's CMV, EBV serology Serum caeruloplasmin, ferritin US scan liver size, Doppler flow study Liver biopsy
Outline management of liver failure
Acute: IV fluids, ABCDE, nutrition, glucose
Vitamin K + blood transfusion for bleeding
Ceftriaxone for infection
Fluid restrict + salt restriction if ascites
Lactulose if encephalopathy
Treat alcohol withdrawal and complications
Outline treatment of hepatorenal syndrome
IV albumin Terlipression Haemodialysis TIPSS drainage Liver transplant
What is cirrhosis?
Irreversible stage of liver damage, with loss of hepatic architecture due to fibrosis and necrosis
List aetiology/risk factors for cirrhosis
Chronic alcohol abuse Hepatitis B, C NAFLD Autoimmunity (PBC, PSC) Haemochromatosis Wilson's disease Alpha-1-antritrypsin deficiency Budd-Chiari syndrome Drugs (amiodarone, methyldopa, methotrexate)
List clinical features of cirrhosis
Chronic liver disease signs (spider naevi, jaundice, leuconychia, caput medusa, Dupuytren’s, xantheloma, telangiectasia, palmar erythema, clubbing)
Hepatomegaly
Ascites
Gynaecomastia
Asterixis
Complications (encephalopathy, sepsis, portal hypertension)
What investigations would you do for cirrhosis?
Deranged LFT's PT time prolonged Reduced albumin Autoantibodies (ANA, AMA, SMA) Alpha feto protein Liver US scan for size, Doppler flow Ascitic tap for microscopy Liver biopsy Child-Pugh scoring for cirrhosis and variceal bleed risk
Outline treatment of cirrhosis
Support (nutrition, alcohol abstinence)
Ascites: fluid restrict, low-salt, spironolactone, paracentesis/TIPS
Lactulose prevents encephalopathy
Cholestyramine for itch
Interferon-alpha slows development into HCC from hepatitis C
Penicillamine for Wilson’s disease
Liver transplant
How does non-alcoholic fatty liver disease (NAFLD) arise?
Steatosis (fat deposition) causes oxidative stress, leading to fibrosis and cirrhosis
List aetiology/risk factors for NAFLD
Obesity Hypertension Total parenteral nutrition Type 2 diabetes Hyperlipidaemia
List clinical features of NAFLD
Asymptomatic Fatigue Malaise Hepatosplenomegaly Signs of chronic liver disease in later stages
What investigations would you do for NAFLD?
US scan shows fatty liver
Liver biopsy
Deranged LFT’s (AST, ALT)
Albumin assesses liver function
Outline treatment for NAFLD
Lifestyle advice
Weight loss
Liver transplant
What is primary biliary cirrhosis?
Interlobular bile ducts destroyed by chronic granulomatous inflammation, causing cholestasis, cirrhosis and portal hypertension
List aetiology/risk factors for primary biliary cirrhosis
Autoimmunity
Females
List clinical features of primary biliary cirrhosis
Asymptomatic Itch without rash Lethargy Jaundice Xanthelasma Osteoporosis Hepatosplenomegaly Signs of chronic liver disease Malabsorption causes osteomalacia, coagulopathy
What investigations would you do for primary biliary cirrhosis?
Cholestatic LFT’s
Decreased albumin
Antimitochondrial antibody, IgM
Liver biopsy
Outline treatment of primary biliary cirrhosis
Ursodeoxycholic acid, cholestyramine
Azathioprine, prednisolone
Treat complications
Liver transplant
What is hereditary haemochromatosis?
Autosomal recessive mutation in HFE gene on c6 causes excess iron absorption and increased iron deposition in organs
List clinical features of hereditary haemochromatosis
Tiredness Arthralgia Impotence Slate-grey skin Signs of chronic liver disease Pituitary dysfunction (hypogonadism) "bronze diabetic" due to deposit in pancrease
What investigations would you do for hereditary haemochromatosis?
Serum ferritin, iron, TIBC HFE phenotype LFT's Glucose Chrondocalcinosis on XR Liver biopsy Perl's stain IgG
Outline treatment of hereditary haemochromatosis
Venesection 1 unit/week until iron deficient
Low iron diet
What is Wilson’s disease?
Autosomal recessive disorder of gene encoding caeruloplasmin, causing excess copper in blood which is toxic to liver and CNS
List clinical features of Wilson’s disease
Signs of liver disease early in life CNS/psych issues Dystonia Dysarthria Tremor Clumsiness Parkinsonism Kayser Fleischer rings in iris Blue nails Grey skin Hypermobility
What investigations would you do for Wilson’s disease?
24h urinary copper
Serum caeruloplasmin
Liver biopsy
MRI CNS
Outline treatment for Wilson’s disease
Avoid copper foods (chocolate, nuts, mushrooms, shellfish)
Lifelong penicillamine/trientine dihydrochloride
Liver transplant
What is Budd-Chiari syndrome?
Hepatic vein obstruction due to thrombosis or malignancy leads to ischaemia and hepatocyte damage
List aetiology/risk factors for Budd-Chiari syndrome
Hypercoaguability (OCP, pregnancy, malignancy, polycythaemia)
Liver/adrenal/renal tumour
List clinical features of Budd-Chiari syndrome
Liver failure Insidious cirrhosis Abdo pain Hepatomegaly Ascites Portal hypertension
What investigations would you do for Budd-Chiari syndrome?
US scan, hepatic vein Doppler
Angioplasty
TIPS
Ascitic tap
Outline treatment of Budd-Chiari syndrome
Thrombolyse
Lifelong anticoagulation
Treat ascites
Liver transplant
What is autoimmune hepatitis and its different types?
Inflammatory liver disease characterised by suppressor T cells and antibodies against hepatocytes
Type 1: adults, kids, ASMA/ANA antivodies
Type 2: girls, women, LKM1 antibody
Type 3: liver soluble Ag
List clinical features of autoimmune hepatitis
Fever Malaise Urticarial rash Polyarthritis Pleurisy Reduced appetitie Amenorrhoea Young woman on pill
What investigations would you do for autoimmune hepatitis?
Deranged LFT’s
AMA, ASMA, ANA, anti-KLM, IgG
Liver biopsy shows piecemeal necrosis, portal infiltrate
Outline treatment of autoimmune hepatitis
Immunosuppression (azathioprine, prednisolone)
Ursodeoxycholic acid
Liver transplant
Liver cancer is usually secondary (metastatic) from somewhere else. True/False?
True
Usually breast/bone/bronchus/GI tract
List aetiology/risk factors for liver cancer
Cirrhosis Hepatitis Alcohol excess Drugs Autoimmunity Genetics
List clinical features of liver cancer
Fever Malaise Anorexia, weight loss RUQ pain Hepatomegaly Jaundice Signs of chronic liver disease Abdo mass Liver bruit
What investigations would you do for liver cancer?
Bloods: FBC, clotting, LFT’s
Alpha-feto protein (HCC)
US scan or CT-guided liver biopsy
ERCP
Outline treatment of liver cancer
Resection
Chemotherapy
Mostly palliative
Liver transplant
Which cancer accounts for 90% of primary liver cancer?
Hepatocellular carcinoma
List aetiology/risk factors for hepatocellular carcinoma
China/sub-saharan Africa Haemochromatosis Viral hepatitis Cirrhosis Parasitic infections Anabolic steroid use
What is the commonest benign tumour of the liver?
Hemangioma, usually in non-cirrhotic patients
How does hemangioma appear on US scan?
Well-demarcated echogenic spot
What is alpha-1-antitrypsin deficiency?
Autosomal recessive disorder on c14 causing deficiency of alpha-1-antitrypsin, resulting in inflammation, emphysema and chronic liver disease
List clinical features of alpha-1-antitrypsin deficiency
Breathlessness
Cholestatic jaundice
Signs of chronic liver disease
What investigations would you do for alpha-1-antitrypsin deficiency?
Serum alpha-1-antitrypsin
Liver biopsy PAS +ve
Prenatal testing
Outline treatment for alpha-1-antitrypsin deficiency
Human plasma alpha-1-antitrypsin if PEV less than 80% and patient not smoking
Liver transplant if decompensated cirrhosis
Where are AST and ALT found and when are they released?
ALT: liver, kidney, muscle
AST: liver, heart, RBC
Released after hepatocellular injury
What are the “true” liver function tests/markers of hepatic function?
Albumin
PT time
Bilirubin
What are gallstones?
Abnormal composition of bile causes hardening and stone formation Pigment stones (haemolysis), cholesterol stones or mixed stones
List aetiology/risk factors for gallstones
“Fat forty-year-old females with foetus”
Drugs
Cirrhosis
Diabetes
List clinical features of gallstones
Biliary colic (gallstone in CBD/cystic duct; colicky RUQ pain +/- back/shoulder radiation, tenderness, nausea) Acute cholecystitis (infected gall bladder; continuous RUQ pain, shoulder pain, peritonism, fever, nausea/vomit, Murphy sign)
What investigations would you do for gallstones?
Bloods: FBC (raised WCC), U+E, LFT’s
US scan thick-walled gallbladder, dilated CBD
MRCP/ERCP
Outline treatment of gallstones
Analgesia for colic, nil-by-mouth
IV antibiotics if cholecystitis - cefuroxime
Cholecystectomy (laparoscopic if no perforation)
What is ascending cholangitis?
Infection of bile duct/biliary tree due to gallstone in common bile duct
List clinical features of ascending cholangitis
Cholestatic jaundice
Pale stools, dark urine
Itch
Charcot’s triad (fever, RUQ pain, jaundice)
Outline treatment of ascending cholangitis
IV antibiotics
ERCP + sphincterotomy before cholecystectomy
What is primary sclerosing cholangitis?
Non-malignant, non-bacterial inflammation and fibrosis of intra and extra -hepatic bile ducts
List aetiology/risk factors for primary sclerosing cholangitis
Men
Ulcerative colitis
HLA-A1 DR3 B8
HIV
List clinical features of primary sclerosing cholangitis
Jaundice Fatigue Fever Abdo pain Hepatomegaly
What investigations would you do for primary sclerosing cholangitis?
LFT’s (ALP) cholestatic pattern
ANA, SMA, pANCA antibodies
ERCP
Outline treatment of primary sclerosing cholangitis
Cholestyramine for itch
Ursodeoxycholic acid to improve cholestasis
Immunosuppression (prednisolone, methotrexate)
Endoscopic stent
Liver transplant
What is the most common biliary tree malignancy?
Cholangiocarcinoma
May be intra or extra hepatic
List aetiology/risk factors for cholangiocarcinoma
Flukes in the East Primary sclerosing cholangitis CA-199 Congenital cysts Biliary surgery
List liver, CNS, GI, Haem and Cardio manifestations of alcoholism
Liver: cirrhosis, hepatitis
CNS: poor cognition, neuropathy, cortical atrophy, fits, falls, haemorrhage, wide gait, confabulations, Korsasakoff-Wernicke syndrome
GI: obesity, diarrhoea, peptic ulcers, gastric erosions, varices, MW tear, pancreatitis, oral lesions
Haem: raised MCV, anaemia, haemolysis
Cardio: arrhythmias, hypertension, cardiomyopathy
List clinical features of alcohol withdrawal
Occurs 10-72 hours after last drink Tachycardia Hallucinations Hypotension Tremor Confusion Fits Anger
Outline the CAGE questionnaire for problem drinking
feel the need to Cut down? get Annoyed by criticism about drinking? feel Guilty? need an Eye-opener in the morning? Yes to 2 or more indicates problem drinking
Outline treatment of alcoholism
Acute withdrawal: BZD + thiamine
Prevention, self-help, group therapy
Relapse control (acamprosate reduces craving, disulfiram for dependence)
List aetiology/risk factors for acute pancreatitis
Gallstones Ethanol Trauma Steroids Mumps Autoimmunity Scorpion bites Hypercalcaemia/lipidaemia ERCP Drugs Malignancy Oxidative stress
List clinical features of acute pancreatitis
Severe epigastric pain radiating to back, may relieve on sitting forward Fever Nausea, vomiting Reduced appetite Tachycardia Hypotension Rigid abdomen Grey Turner sign (flank bruising) Cullen sign (periumbilical bruising)
What investigations would you do for acute pancreatitis?
Amylase typically hugely raised Serum lipase FBC, U+E, ABG's, LFT's AXR shows sentinel loop of proximal jejunum if ileus Erect CXR to exclude perforation
What is the Glasgow prognostic score for severe pancreatitis?
3 or more abnormal values from following parameters indicates severe pancreatitis: PaO2 Age Neutrophilia Calcium Renal function Enzymes Albumin Sugar
Outline treatment of acute pancreatitis
Nil-by-mouth, nutritional support (NG/NJ) IV fluids Catheterisation Analgesia ERCP if gallstones Antibiotics Drain abscess/laparotomy + debridement
Endocrine and exocrine insufficiency occurs in chronic pancreatitis. True/False?
True
Chronic fibrosis and calcification of pancreas
List aetiology/risk factors of chronic pancreatitis
Alcohol abuse Cystic fibrosis Alpha-1-antitrypsin deficiency Hyperparathyroidism Pancreatic duct obstruction
List clinical features of chronic pancreatitis
Epigastric pain radiating to back
Erythema ab igne (mottled greyness)
Steatorrhoea
Weight loss
Outline treatment of chronic pancreatitis
Analgesia Stop alcohol Address diabetes Treat enzyme deficiency (CREON) Pancreactectomy, pancreaticojejunostomy
What is the most common type of pancreatic cancer?
Adenocarcinoma at head of pancreas/Ampulla of Vater
List aetiology/risk factors of pancreatic cancer
Smoking Alcohol Diabetes Chronic pancreatitis High fat diet KRAS2 gene Insulinomas, glucagonomas, gastrinomas, somatostatinomas
List clinical features of pancreatic cancer
Painless obstructive jaundice Dark urine pale stools Epigastric pain Weight loss Thrombophlebitis Palpable gall bladder Ascites
What investigations would you do for pancreatic cancer
LFT’s
CA-199
US scan/CT shows pancreatic mass
Biopsy
Outline treatment of pancreatic cancer
Radical surgery (Whipple's procedure - pancreatoduodenectomy) if fit enough Palliative care
List aetiology/risk factors for appendicitis
Luminal obstruction by faecolith
Worms
Lymphoid hyperplasia
Hygiene hypothesis
List clinical features of appendicitis
Periumbilical pain that moves to RIF Vomiting Constipation Anorexia Tachycardia Fever Flushing Guarding Rebound tenderness Rovsing sign (pain in RIF when LIF pressed) Tender McBurney point
What investigations would you do for appendicitis?
FBC, U+E, inflammatory markers
US scan
Do not delay surgery
Outline treatment of appendicitis
Prompt appendectomy
IV metronidazole + cefuroxime
What are carcinoid tumours?
Tumours of enterochromaffin cell origin that produce 5-HT
May also secrete bradykinin, substance P, VIP, gastrin, insulin, glucagon, ACTH, PT hormone, thyroid hormone
List common sites for carcinoid tumours
Appendix Ileum Rectum Ovary Testis Bronchi
Which MEN syndrome - 1 or 2 - are carcinoid tumours associated with?
MEN1
List clinical features of carcinoid tumours
Appendicitis RUQ pain Bronchoconstriction Paroxysmal flushing Diarrhoea Tricuspid regurgitation CNS effects Carcinoid crisis (shock)
What investigations would you do for carcinoid tumours?
24h urine 5-HT US scan liver CXR CT abdo + plvis Plasma chromograffin A PET scan
Outline treatment of carcinoid tumours
Octeotride/lareotide
Treat symptoms
Tumour resection
What is a hernia?
Protrusion of viscus out of its normal body cavity
List aetiology/risk factors for hernia
Obesity Pregnancy Heavy lifting Cough Constipation Abdo wall defects
List clinical features of hernia
Femoral: mass in upper medial thigh, inferolateral to pubic tubercle
Inguinal: direct/indirect, superomedial to pubic tubercle
Paraumbilical: herniation of bowel + omentum
Incisional: breakdown of muscle post-surgery
Epigastric: weak linea alba
Outline treatment of hernia
Surgical repair Treat complications (obstruction, strangulation)
What is an indirect inguinal hernia?
Passes through internal inguinal ring (midpoint of inguinal ligament)
What is a direct inguinal hernia?
Pushes through posterior wall of inguinal canal into Hesselbach triangle (medial to inferior epigastric arteries)
List aetiology/risk factors for inguinal hernias
Direct = young males Indirect = old males Cough Increased intra-abdominal pressure Patent processus vaginalis
What is patent processus vaginalis?
Connection between peritoneal cavity and tunic vaginalis fails to close behind testis, causing indirect inguinal hernia formation
May result in hydrocele if peritoneal fluid collects
Outline treatment of inguinal hernia
Lifestyle advice
Weight loss
Mesh repair to reinforce posterior wall
What are haemorrhoids?
Swollen vessels in/around anus and rectum
Spongey vascular tissue at 3, 7 and 11 o’clock becomes displaced/disrupted
List aetiology/risk factors for haemorrhoids
Erect posture Increased anal tone Straining Trauma Constipation Congestion
List clinical features of haemorrhoids
Readily bleeding
Bright red blood around stool/paper/pan
Mucous discharge
Pruritis ani
What investigations would you do for haemorrhoids?
PR exam
Abdo exam
Proctoscopy
Sigmoidoscopy
Outline treatment of haemorrhoids
Gel/cream Ice pack Stool softeners Band ligation Cryotherapy Haemorrhoidectomy Coagulation Sclerosants
List aetiology/risk factors for rectal prolapse
Lax sphincter
Prolonged straining
Neuropsychological disorder
List clinical features of rectal prolapse
Loss of anal tone
Bleed
Mucous stool
“hanging” sensation
Outline treatment for rectal prolapse
Rectopexy (fix rectum to sacrum) +/- mesh +/- rectosigmoidectomy
Stool softeners
Stop straining
What is anal fissure?
Tear in squamous lining of lower anal canal, distal to the dentate line
List aetiology/risk factors for anal fissure
Hard faeces Constipation Rectal artery constriction STD IBD Trauma
List clinical features of anal fissure
Painful defecation, like shitting a shard of glass
Bleeding
Abscess
Outline treatment for anal fissure
Stool softener
Local lidocaine ointment/GTN ointment
Lateral partial internal sphincterotomy
What is anal fistula?
Abnormal communication between anal canal and skin
List aetiology/risk factors for anal fistula
Blockage of deep intramuscular gland ducts, causing abscess Perianal sepsis IBD Diverticular disease Rectal carcinoma
What investigations would you do for anal fistula?
MRI
PR exam
Endoanal US scan
Outline treatment for anal fistula
Fistulotomy + excision
Seton suturing
Drainage