[Haemocholecyst: a rare complication of anticoagulant treatment].

We report a case of a 50-year-old woman, taking antivitamin K for double mitro-aortic valvular replacement, having presented a clinical picture of acute cholecystitis with marked hypotension. The radiological and biologic exams showed a deep hypocoagulability, vesicular gallstones, a haemoperitoneum and retroperitoneal haematoma. After correction of biological anomalies, the patient was operated. The gallbladder was distended containing large clots and four stones without any evidence of perforation. One of the gallstones led to cystic duct obstruction. Haemocholecyst is a rare complication of anticoagulant therapy, which may occur in the setting of gallbladder stones. The usual complication was the vesicular perforation. In spite of its rarity, haemocholecyst should be suspected when an anticoagulant treated patient presents symptoms of acute cholecystis with or without haemorrhagic shock.