Tutorial title - Hepatobiliary System - Cholangiopathies
9 important questions on Tutorial title - Hepatobiliary System - Cholangiopathies
What are the non-specific clinical features mentioned?
- Fatigue
- Hepatomegaly (early stage)
- Features of portal hypertension (late stage)
- Steatorrhea
- Features of fat-soluble vitamin deficiency
- Features of dyslipidemia
What are cholangiopathies and their nature?
- Cholangiopathies are diseases of the hepatobiliary tree, involving cholangiocytes and autoimmune disorders of intrahepatic bile ducts.
- They are cholestatic in nature. Components of the biliary tree are affected.
- Types include autoimmune disorders like primary biliary cirrhosis (PBC) and primary sclerosing cholangitis (PSC).
How does lactulose function in treatment?
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What are the characteristics and risk factors of Primary Biliary Cirrhosis (PBC)?
Primary Biliary Cirrhosis (PBC) is an autoimmune disease causing chronic inflammatory destruction of intrahepatic bile ducts, common in middle-aged women with a 9:1 female to male ratio.
Risk factors include genetic predisposition, family history of PBC, environmental factors like smoking, and use of nail polish.
What are the characteristics and associations of PSC?
Describe the pathogenesis and morphology of PBC.
Pathogenesis of PBC involves antimitochondrial antibodies, aberrant expression of MHC class II molecules on bile duct epithelial cells, and recruitment of mononuclear T cells around bile ducts.
Morphology shows inflammatory destruction with loss of bile ducts, florid duct lesion, and reactive proliferation of cuboidal cells forming ducts (chronic cholangitis).
Describe the morphology related to PSC.
- Large bile ducts: Acute/chronic inflammatory destruction with neutrophils or macrophages, leading to fibrosis.
- Small bile ducts: Circumferential onion-skin fibrosis.
What are the clinical features and phases of PBC?
- Silent/preclinical phase: No obstructive jaundice, hyperconjugated bilirubinemia, (+) AMA, (-) ALP.
- Asymptomatic phase: No obstructive jaundice, jaundice in lab tests, (+) ALP.
- Symptomatic phase: Clinical and biochemical features, dry eyes.
- End-stage disease: Liver failure features, pruritus, fatigue, RTA, osteoporosis, hyperpigmentation, xanthomas.
What are the clinical features and treatment options for PSC?
- Transplant
- Stents in limited fibrosis
- Cholestyramine for pruritus
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