Liver Pathology Flashcards
What are the causes of cirrhosis?
etoh, viral hepatitis, biliary ds. hereditary hemochromatosis, wilsons ds. A1AT def, NAFLD
The 3 most common causes of death in cirrhosis?
hepatic failure
portal htn
hepatocellular carcinoma
List the some symptoms of hepatic failure
Jaundice, hypoalbunemia, bleeding, hyperammonemia, hypoglycemia, endocrine and renal failure, encephalopathy, pulmonary and portal htn
What is the most common cause of acute hepatic failure? Chronic?
acetaminophen OD
cirrhosis
Sinusoidal/central venous fibrosis, parenchymal nodules, arterial portal anastamoses adn hyperdynamic splanchnic circulation are all causes of what liver pathology?
Portal htn
Symptoms of portal htn?
ascites, splenomegaly, esophageal varices, hepatic encephalopathy
What would be seen on a liver biopsy fo a pt. with alcoholic steatosis?
enlarged lipid vacuoles
IF you see mallory bodies think this, yo.
Alcoholic hepatitis
What are the differences seen in imaging between early and late alcoholic cirrohsis?
Early- enlarged fatty liver w/micronodules
Late - shrunken, nonfatty, w/variable nodules
Causes of mortalitiy in alcoholic cirrhosis?
Hepatic encephalopathy Esopahgeal varices Infection Hetaptorenal syndrome Hepatocellular carcinoma
What is the diff between types of pt with non- alcoholic and alcoholic fatty liver disease?
Non-alcoholic - obese, T-II diabetes, dyslipidemia, and mucho insulin resistance
alcoholic - alcohol consumption
What is primary biliary cirrhosis?
inflammatory destruction of small and medium intrahepatic bile ducts
Dx tests for PBC?
ALP/GGT - elevated
AMA antibodies or (ANA and ASMA/AIH)
CD8+ T cells
What would a typical PBC look like and present as?
Middle age european female with pruritis, xanthelmsa/xanthoma, steatorrhea, osteomalacia/osteoporosis and other autoimmune ds.
Name causes of secondary billiary cirrhosis?
Stones, tumors, atresia, CFTR, choledocal cysts
What autoimmune disease is associated with PSC?
IBD - 70% of patients
What is the key finding for PSC?
Beaded cholangiogram and atypical p-ANCA
Describe Hereditary hemochromatosis.
AR decrease in hepcidin synth –> increased Iron absorption. Treated with phlebotomy and iron chelations. Also called bronze diabetes
What causes secondary hemochromatosis
parenteral overload
ineffective erythoproeisis
increased oral effective
Key difference in biopsy between hereditary and secondary hemochromatosis?
in hereditary iron in hepatocytes while in secondary it is in the Kupfer cells
what is the defect in Wilson’s disease?
AR defect in ATP7B- so you can secrete copper and ceruloplasmin into bile.
When would you suspect Wilson’s ds?
A teen with liver disease where all tests are coming up negative.
What would you see in a liver bx. in A1AT?
build up of A1AT in hepatocytes
Diagnosis of A1AT would involve what tests?
A1AT level, A1AT phenotype, liver bx. : PAS + cytoplasmic globular inclusions
What is the difference between a direct and unpredictable cause of drug induced liver injury?
direct: all individuals sustain the same level of injury from the same dose
unpredictable: level of damage is dependent on the individual
What are two causes of neonatal cholestasis?
biliary atresia and neonatal hepatitis
Describe neonatal hepatitis?
hepatitis caused by biliary atresia, A1AT inherited metabolic deficiency, tyrosinemia, CFTR, drug toxicity
What type of bilirubin accumulates in neonatal cholestasis?
conjugated