In occlusion of an intrahepatic branch of portal vein, sharply demarcated area of red-blue discoloration, not infarct, not necrosis, only marked stasis in distended sinusoids, with secondary hepatocellular atrophy.
Thrombi formed within a cardiac chamber or the aorta, may have apparent laminations, produced by alternating layers of paler platelets admixed with some fibrin, separated by darker layers containing more red cells.
For management of shoulder dystocia, cephalic replacement of infant followed by caesarian delivery.
Disorder of peroxisomes characterized by the congenital absence of functioning peroxisomes resulting in a cerebrohepatorenal syndrome; associated with prenatal development problems, hepatomegaly, increased serum iron and copper, visual disturbances; generally fatal by 1 year; caused by mutations in genes involved in peroxisome biogenesis (PEX genes).
A pharyngeal diverticulum from premature contraction of the cricopharyngeus muscle on swallowing, leads to progressive UES narrowing, leading to a posteriorly directed hypopharynx; causes progressive food stasis and dysphagia.
Jaundice, hyperlipemia, and hemolytic anemia in alcoholic liver disease; described in 1958.
Mosquito-borne flavivirus, usual asymptomatic, can cause viral prodromal syndrome, birth defects if pregnant woman infected
Ring of fibrous tissue that surrounds the optic foramen, where the optic nerve enters at the apex of the orbit. Serves as the origin of five of the six extraocular muscles.
Circulating hypergastrinemia seen in gastrinoma. Associated with gastric acid hypersecretion and severe peptic ulcer diathesis. Associated with peptic ulcers and diarrhea; 60% malignant, only 20% resectable; 25% of gastrinoma patients have multiple endocrine neoplasia type I; >80% of gastrinomas found in gastrinoma triangle.
Plasma cell balanitis (also known as balanitis circumscripta plasmacellularis), idiopathic, rare, benign, penile dermatosis with plasma cell infiltration; treated with circumcision; described in 1952.
Collection of para-aortic, paraganglion cells around the origin of the inferior mesenteric artery; a site where extra-adrenal pheochromocytomas may arise.
Part of thyroid that tracts posterior to the sides of the trachea and esophagus; found in nearly 2/3 of patients undergoing thyroid surgery, usually enlarges lateral to recurrent laryngeal nerve; described in 1902.
Eponyms 
Ingrown toenail
Nematocysts
Cryptitis
Vascular ring
Vesiculobullous rashes
Black hairy tongue
Abscess