A cardiac hydatid cyst involving the basal interventricular septum causing biventricular outflow tract obstruction.

We report a case of a 37-year-old sheep-raising man with a cardiac hydatid cyst involving the basal interventricular septum causing biventricular outflow obstruction. He suffered from multi-organ hydatidosis and underwent cerebral hydatid cyst extirpation and right nephrectomy for renal echinococcosis. The diagnosis of the cyst was obtained by echocardiography and magnetic resonance imaging. The diagnosis was confirmed by positive hemagglutination test. He was operated on for cardiac hydatid cyst using enucleation and capitonnage procedure under extracorporeal circulation. The morbidity was complete atrioventricular block, necessitating VDD pacemaker implantation. This was followed by medical treatment with albendazole (400 mg/day).