Multiple hydatid cysts of the interventricular septum.

Hydatid disease, Echinococcus granulosus, is a parasitic infection which is endemic in some countries. The liver and lungs are the most common sites of infection. Cardiac involvement is extremely rare. The most common localizations of cardiac involvement are the left ventricular free wall, right ventricle, and interventricular septum. Herein, we present a rare case of multiple cardiac hydatid cysts in the interventricular septum.