Gastroenterology Flashcards
liver cirrhosis: causes
alcohol
NAFLD
Hepatitis B or C
Metabolic liver disease (Wilson’s, haemochromatosis)
liver cirrhosis: most sensitive investigation
FBC - thrombocytopenia
liver cirrhosis: complications
- UGIB
- sepsis
- spontaneous bacterial peritonitis
- hypoglycaemia
- hepatocellular carcinoma
- hepatorenal syndrome
liver cirrhosis: monitoring for hepatocellular carcinoma
6 monthly USS
Alpha fetoprotein
decompensated liver disease: triggers
- alcohol
- Hepatitis A or E
- infection
- dehydration
- constipation
- UGIB
acute hepatitis: causes
- Alcohol
- Hepatitis A or E
- Autoimmmune
- Toxicity (e.g. paracetamol)
autoimmune hepatitis: types and serology
Type 1 - ANA, anti-SMA
Type 2 - anti-LMK1
primary sclerosing cholangitis: distribution
intra- and extra-hepatic bile ducts
primary biliary sclerosis: distribution
intra-hepatic bile ducts
primary sclerosing cholangitis: associations
ulcerative colitis (in 70% cases)
primary sclerosing cholangitis: presentation
intermittent jaundice and pruritis, classically younger people
primary biliary sclerosis: associations
- Sjogren’s syndrome
- Raynaud’s phenomenon
- arthritis
- autoimmune thyroid disease
primary biliary sclerosis: presentation
insidious onset of fatigue, weight loss, pruritis, classically in middle aged women
primary sclerosing cholangitis: investigations
pANCA in 70% cases (also: ASM, ANA)
ERCP shows stricturing
primary biliary sclerosis: investigations
AMA
primary sclerosing cholangitis: management
No curative treatment
Consider cholestyramine (pruritis), ERCP stenting or balloon dilation, liver transplant for end-stage disease
primary biliary sclerosis: management
Ursodeoxycholic acid
Consider cholestyramine (pruritis), liver transplant for end-stage disease
primary sclerosing cholangitis: complications
- recurrence
- biliary cirrhosis
- Cholangiocarcinoma
- colorectal cancer
- portal hypertension
- malabsorption (metabolic bone disease)
primary biliary sclerosis: complications
- cirrhosis
- Hepatocellular carcinoma
- malabsorption (metabolic bone disease)
ulcerative colitis: distribution
large bowel +/- ‘backwash ileitis’, continuous distribution
ulcerative colitis: associations
pANCA
Primary Sclerosing Cholangitis
ulcerative colitis: presentation
Violent, bloody, mucousy diarrhoea and abdominal pain, systemic malaise.
ulcerative colitis: extra-intestinal manifestations
eyes - uveitis
joints - AS, arthropathy, sacroilitis
skin - erythema nodosum
ulcerative colitis: management of acute flairs
- topical aminosalicylate (sulfasalazine, mesalazine)
- oral aminosalicylate
- topical or oral steroid
ulcerative colitis: maintenance therapy
- topical or oral aminosalicylate
- add azathioprine or cyclosporine
- trial anti-TNF (infliximab, adalibumab)
ulcerative colitis: complications
- toxic megacolon
- primary sclerosing cholangitis
- colonic cancer
Crohn’s disease: distribution
can affect any part of the GIT, commonly affects the terminal ileum, see skip lesions
Crohn’s disease: risk factors
smoking
Crohn’s disease: presentation
diarrhoea which may be bloody, steatorrhoea, crampy abdominal pain and systemic malaise
see mouth ulcers and perianal disease (skin tags, fistulae, abscesses)