[Hydatid cyst of the right atrium].

Cardiac hydatid cysts are rare; the right atrial location is even rarer and carries serious complications. We report three cases of cardiac hydatid cyst of the right atrium. The first patient died in the postoperative period due to right heart failure and massive tracheal bleeding. The course of the disease of the two other patients was uneventful. Echocardiography is the most informative technique for identifying and localising the cyst before surgery. Right atrium hydatid cyst should be treated by early surgical excision with a view to prevent the risk of pulmonary embolism.