Gastroenterology and Hepatobiliary Flashcards
What test do you do in order to investigate potential PBC or PBS?
Magnetic resonance - cholangiopancreatography (MRCP)
What is the associated condition for Primary Sclerosing Cholangitis?
Ulcerative colitits
What are the key differentiating features of Crohn’s in comparison to Ulcerative Colitits?
Crohn’s - transmural, granulomas (cobblestone mucosa), skip lesions, discontinuous lesions, strictures)
Ulcerative Colitis - submucosa, crypts, continuous inflammation
What is your drug of choice to manage Crohn’s?
Methotrexate or infliximab
How do you treat UC flares?
Prednisolone
Usually on azathioprine
- 5-aminosalycylic acid
What does a lack of abdominal breathing potentially indicate?
Peritonitis
What diet is helpful for IBS treatment?
FODMAP diet - Fermentable Oligo-di-monosaccharides and polyols
What histological feature is seen in coeliac disease?
Villous atrophy
Flat mucosa
Marked crypt hyperplasia
What are some associated conditions in coeliac disease?
Dermatitis herpetiformis (vesicular, pruritic skin eruption)
Autoimmune disorders (T1DM)
IBS
Autoimmune thyroid disease
How might coeliac disease present?
Malnutrition, failure to grow Weight loss GI symptoms: persistent vomiting/nausea/diarrhoea Abdominal pain, cramping, distension Unexplained iron deficiency anaemia
A gentleman with a heavy drinking habit presents with mild jaundice and a palpable painless gallbladder. What is the most likely diagnosis?
Malignancy of gallbladder or pancreas
What is Courvoisier’s sign?
Painless enlarged gallbladder and mild jaundice = NOT gallstones
What is a classical presentation of pancreatic cancer?
Painless jaundice
Non-specific - weight loss, anorexia, epigastric pain
What is the procedure for surgical resection of the pancreas head?
Whipple’s resection (pancreaticoduodenectomy)
What is used to determine liver cirrhosis severity?
Bilirubin Albumin PT Encephalopathy Ascites
What is the most common part of the colon affected by ischaemic colitis?
Splenic flexure
What are some common features of ischaemic colitis?
Abdominal pain (acute mesenteric ischaemia) - sudden onset, severe, out of keeping with physical exams Rectal bleeding Diarrhoea Fever Raised WCC
What is the difference between acute mesenteric ischaemia and ischaemic colitis?
Mesenteric ischaemia - affects the small bowel, often embolic cause, hx of AF, urgent surgery required
Ischaemic colitis - transient compromise to blood flow - inflammation, ulceration and haemorrhages occur
What are some classic features of a carcinoid tumour?
Flushing, sweating, diarrhoea, bronchoconstriction
What test is diagnostic for c difficile?
C difficile toxin
First line therapy is PO metronidazole for 10-14 days
What does achalasia increase your risk for?
Squamous Cell Carcinoma
What is Barrett’s Oesophagus?
Dysplasia of squamous cells in oesophagus to columnar epithelium.
Risk factor in adenocarcinoma
Treat with PPI + endoscopic surveillance
If dysplasia then consider ablation or resection
What are some causes of acute pancreatitis?
I GET SMASHED Idiopathic Gallstones Ethanol Trauma Steroids Mumps/Malignancy Autoimmune Scorpion stings Hyperlipidaemia, Hypercalcaemia, Hypothermia ERCP Drugs
What is a common but non-liver feature of Wilson’s Disease?
Neuropsychiatric symptoms
What is Wilson’s Disease?
Autosomal recessive Copper deposition in the tissues Hepatitis, cirrhosis Basal ganglia degeneration, speech, behavioral and psychiatric problems Chorea, dementia, asterixis Kayser-Fleischer rings (red in eyes)
How do you diagnose and manage Wilson’s Disease?
Low serum caeruloplasmin, Low serum copper, increased urine copper
Penicillamine
What is a sign on biopsy of laxative abuse?
Melanosis coli
What is Budd-Chiari Syndrome and when can it occur?
Hepatic vein thrombosis
Seen in underlying haematological disease (polycythaemia, thrombophilia, pregnancy, COCP)
What is diagnostic of Budd-Chiari syndrome?
ultrasound with Doppler flow studies
What are the symptoms of Budd-Chiari Syndrome?
Abdominal pain (sudden onset, severe)
Ascites
Tender hepatomegaly
What is the best test to determine liver cirrhosis?
Transient elastography (fibroscan)
What are the most common features of IBS?
Feeling of incomplete stool evacuation
Back pain
Lethargy
Nausea
Consider diagnosis in abdominal pain, bloating or change in bowel habit for at least 6 months
What is a common cause of diarrhoea post-travelling?
E-coli causes travellers diarrhoea, commonly with nausea and abdominal cramps.
What are some risk factors for Barrett’s oeseophagus?
GORD
Male
Smoking
What cardiac abnormalities are associated with carcinoid syndrome?
Pulmonary stenosis and tricupsid insufficiency
It affects the right side of the heart
How do you treat carcinoid syndrome?
Octreotide - somatostatin analogue
What is Gilbert’s Syndrome?
Benign Inability to conjugate bilirubin Autosomal recessive Occurs during illness, fasting, stress, lack of sleep, dehydration, alcohol excess Reassure
What is Primary Biliary Cholangitis?
Autoimmune (F>M) Interlobular bile duck inflammation Progressive cholestasis and cirrhosis Itching, hepatosplenomegaly IgM, anti-mitochondrial antibodies
What are causes of liver cirrhosis?
Alcohol
NAFLD
Viral Hep B and Hep C
What is the management for a liver abscess?
Drainage and antibiotics (amox + cipro + metro)
What is the gold standard investigation for oesophageal cancer?
Endoscopy
When are gallstones treated?
Symptomatic patients - done with surgery (laparoscopic cholecystectomy) or ERCP
What are some classic differentiating features between Crohn’s and UC?
UC - continuous disease of IC valve to rectum, no inflammation beyond submucosa, crypt abscesses
Bloody diarrhoea more common, pseudopolyps
Crohn’s - skip lesions, mouth to anus, inflammation all levels, goblet cells, granulomas
Which type of jaundice presents as dark urine and pale stools?
Obstructive jaundice (cholestasis)
What deficiency is coeliac disease associated with?
Iron, folate and B12
Give some differential diagnosis of abdominal pain.
Biliary cholic, cholecystitis Cholangitis Pancreatitis (often painless) Hepatitis Appendicitis Renal colic Gynae - ectopic, PCOS, fibrinoids, endometriosis Splenic trauma Peptic ulcer disease AAA
What are the five ‘F’s of abdominal distension?
Fat Fluid Faeces Foetus Flatus
What are the nine regions of the abdomen?
Hypochondriac - R and L Epigastric Lumbar - R and L Umbilical Iliac region R and L Hypogastric
What are causes of GORD?
NSAIDs Pregnancy Obesity Smoking Alcohol
What is dyspepsia?
Reflux and epigastric pain due to indigestion
What is dysphagia?
Problems swallowing
How is GORD managed?
Lifestyle changes
PPI - 30mg omeprazole or lansoprazole
H2RA: ranitidine
What are some side effects of PPIs?
SE: bone demineralisation
How is h. pylori treated?
PPI/H2RA
x2 antibiotics
What is a common cause of an ulcer?
H. pylori
NSAIDs
Smoking
Are they any differences between a gastric ulcer and a duodenal ulcer other than site?
Gastric/Peptic - less common, bleeding and haematemesis
Duodenal - more common, malaena
What is the name of the test for the bacteria that causes ulcers?
13C breath test
What are potential differentials for an upper GI bleed?
Gastric ulcer Oesophageal varices Liver disease Mallory-Weiss tear Malignancy
What drug can you give to treat oesophageal varices?
Propranolol hydrochloride
If haemorrhaging can give terlipressin
What are the two MAIN causes of pancreatitis?
Gallstones
Alcohol
What are two typical signs of pancreatitis?
Grey-Turner’s Sign - discolouration in the flanks, a result of blood leaking into subcut tissues
Cullen’s Sign - grey discolouration around umbilicus
What is the abbreviated Glasgow scale used for?
Pancreatitis severity assessment
APACHE II used too
How do you treat pancreatitis?
IV fluids, O2
Antibiotics
Monitor urine output
Analgesia for pain
What is the difference between primary and secondary peritonitis?
Primary - spontaneous bacterial peritonitis (occurs in compromised immune systems)
Secondary - occurs due to underlying pathology (pancreatitis, surgery, bowel perforation, appendicitis, ectopic, bowel infarct
Abdominal pain that improves when a hand is laid on it may indicate…
Peritonitis
What is Rovsing’s sign?
When pressing on the left iliac fossa, pain may be felt on the right iliac fossa.