title: Acute cholecystitis secondary to unusual gallstones.
abstract: Gallstone formation around metallic foreign bodies is an unusual cause of acute cholecystitis. Two cases of penetrating abdominal trauma are described in which metallic fragments served as the nidus for calculus formation and later precipitated an acute abdominal problem.
mesh_terms: D000208:Acute Disease; D000328:Adult; D002764:Cholecystitis / Q000209:etiology*; D002769:Cholelithiasis / Q000150:complications* / Q000209:etiology; D005547:Foreign Bodies / Q000150:complications*; D005704:Gallbladder; D006801:Humans; D008297:Male; D014950:Wounds, Penetrating / Q000150:complications