Spontaneous gallbladder perforation.

Acute gallbladder perforation is an infrequent, although not uncommon, complication of cholecystitis. It is rarely diagnosed preoperatively and the delay in making the definitive diagnosis usually accounts for the increased incidence of morbidity and mortality associated with this complication. A case of a 92-year-old patient in whom acute gallbladder perforation was suspected peroperatively at ultrasonography of the abdomen and confirmed by technetium-99m disofenin radionuclide biliary scan is reported.