Category Radiology

Sarcoidosis

KEY FACTS Terminology Relatively common, chronic, multisystem disease of unknown origin characterized by presence of noncaseating epithelioid granulomas Imaging Contrast-enhanced CT of chest and abdomen is most efficient imaging study Can affect almost every organ Most common site of involvement…

HIV/AIDS

KEY FACTS Terminology Abdominal opportunistic infections and neoplasms resulting from HIV/AIDS-related immunodeficiency Imaging Liver and spleen Small hypodense nodules may be microabscesses Larger hypodense lesions might be infectious, but AIDS-related lymphoma should be considered Pneumocystis may result in tiny calcifications…

Jaundice

Overview Jaundice (icterus) is a condition characterized by yellow discoloration of the skin and mucus membranes resulting from deposition of bilirubin, a pigmented metabolite of heme. Jaundice is most commonly due to disorders of the liver or bile ducts, but…