Category Gastrointestinal Imaging

Foreign Bodies

KEY FACTS Imaging Ingested foreign bodies Commonly affect children, developmentally challenged or psychiatric patients, and inebriated adults Most ingested foreign bodies traverse GI tract without problem: < 1% cause obstruction or perforation – Elongated or sharp objects may impact at point…

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…