Acute acalculous cholecystitis.
D000328:Adult; D000368:Aged; D001659:Biliary Tract / Q000503:physiopathology; D002763:Cholecystectomy; D002764:Cholecystitis / Q000209:etiology / Q000601:surgery*; D002765:Cholecystography; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged