The hydatid disease of heart, caused by Echinococcus granulosus has an incidence of 0.5%-2% , in the sheep grazing areas of the developing and under-developed countries. The cyst of interventricular septum has a 5%-9% incidence with complications of conduction block and arrythmias. Transesophageal echocardiography(TEE) is useful for intraoperative cyst localization and excision. Our image review highlights the TEE findings of our young patient with multiple hydatid cysts of interventricular septum , with the septal tricuspid leaflet adherent to the cyst membrane.