liver by hadi Flashcards
Diffuse, foamy, swollen appearance to the hepatocyte caused by retained biliary material
Feathery degeneration
These appear in cirrhotic livers, are larger than surrounding cirrhotic nodules but do not display atypical features. Contains more than one portal tract, have an intact reticulin framework, and do not seem to be precursors of malignant lesions
Macroregenerative nodules
Poorly stained mummified hepatocytes
Coagulative necrosis
Isolated hepatocytes become shrunken, pyknotic, and intensely eosinophilic
Apoptosis
Presence of “ground-glass” hepatocytes, a finely granular, eosinophilic cytoplasm and “sanded” nuclei, shown by electron microscopy
hep B
Necrotic cells appear to have “dropped out,” with collapse of the sinusoidal collagen reticulin framework where the cells have disappeared; scavenger macrophage aggregates mark sites of dropout
Hepatocyte cytolysis in viral
The hallmark of serious liver damage
Fibrosis
Almost always accompanied by a brisk sinusoidal and perivenular fibrosis; occasionally periportal fibrosis may predominate
Alcoholic hepatiti
Pattern of cirrhosis in viral hepatitis
Macronodular
Pattern of cirrhosis in alcoholic hepatitis
Micronodular
Golden-yellow granules in the cytoplasm of periportal hepatocytes, which stain blue with the Prussian blue stain:
Hemosiderin
Green to brown deposits of copper in Descemet membrane in the limbus of the cornea
Kayser-Fleischer rings
Excessive copper deposition in the liver causing hepatic changes ranging from mild fatty change to massive liver necrosis. In the brain, injury affects the basal ganglia, demonstrating atrophy and cavitation. Kayser-Fleischer rings are characteristic
wilson
Hepatocytes with round to oval cytoplasmic globular inclusions which are strongly positive in a periodic acid-Schiff stain. By electron microscopy they lie within smooth, and sometimes rough, endoplasmic reticulum
Alpha-1 antitrypsin Deficiency
A rare disease characterized by microvesicular fatty change in the liver and encephalopathy. Microscopy of hepatocellular mitochondria reveals pleomorphic enlargement and electron lucency of the matrices, with disruption of cristae and loss of dense bodies
reye syndrome
A chronic, progressive, and often fatal cholestatic liver disease, characterized by a nonsuppurative destruction of small and medium-sized intrahepatic bile ducts (“florid duct lesion”). On cut surface, the liver is hard, with a finely granular appearance, with extraordinary yellow-green pigmentation
Primary biliary cirrhosis
A chronic cholestatic disorder, characterized by progressive fibrosis and destruction of extrahepatic and large intrahepatic bile ducts. Affected portal tracts show concentric periductal “onion-skin” fibrosis and a modest lymphocytic infiltrate. Progressive atrophy of the bile duct epithelium leads to obliteration of the lumen, leaving behind a solid, cordlike fibrous scar
Primary sclerosing cholangitis
Liver is slightly enlarged, tense, and cyanotic, with rounded edges. Microscopically, there is congestion of centrilobular sinusoids. With time, centrilobular hepatocytes become atrophic, resulting in markedly attenuated liver cell cords. Liver fibrosis mostly “centrilobular”
assive congestion of the liver secondary to right-sided heart failure
Characterized by deposition of hemosiderin in the following organs: liver, pancreas, myocardium, pituitary, adrenal, thyroid and parathyroid glands, joints, and skin; cirrhosis; and pancreatic fibrosis:
Hereditary hemochromatosis
Results from the thrombosis of two or more major hepatic veins and is characterized by hepatomegaly, weight gain, ascites, and abdominal pain. The liver is swollen, is red-purple, and has a tense capsule. The affected hepatic parenchyma reveals severe centrilobular congestion and necrosis:
budd chiari
Caused by toxic injury to sinusoidal endothelium. Damaged endothelial cells slough off and create emboli that block blood flow. Accompanied by passage of red blood cell into the space of Disse, proliferation of stellate cells, and fibrosis of terminal branches of the hepatic vein
Sinusoidal Obstruction Syndrome
These are lesions larger than 1 mm in diameter that appear in cirrhotic livers. Considered to be precursors of hepatocelluar cancers, are often monoclonal, and may contain chromosome aberrations similar to those present in liver cancers
Dysplastic nodules
A distinctive variant of HCC, which occurs in young male and female adults (20-40 years of age) of equal incidence, no association with cirrhosis or other risk factors. usually consists of a single large, hard “scirrhous” tumor with fibrous bands coursing through it. Composed of well-differentiated polygonal cells growing in nests or cords and separated by parallel lamellae of dense collagen
bundles.
Fibrolamellar carcinoma(A distinctive variant of hepatocellular carcinoma that occurs in young adults and has no association with HBV or cirrhosis risk factors.)
Condition wherein the exudate contained in the gallbladder is composed virtually of pure pus.
Empyema of the gallbladder
Steril stones black and brown are
infected w bacteria
This pattern of GB carcinoma grows into the lumen as an irregular, cauliflower mass, but at the same time it invades the underlying wall
Exophytic pattern of gallbladder carcinoma