Hydatid Cyst in a 10-Year-Old Boy: An Unusual Location

Hydatid disease, caused by echinococcus granulosus, is a common infectious disease in endemic areas such as southern europe and the middle east. the incidence of this disease, however, is on the increase in northern europe due to the migrationof labor and also tourism. we report a case of the hydatid cyst of the mediastinum, the diagnosis of which was established by the hemagglutinin test and echocardiography and confirmed by histological examinations. the cyst was totally removed during surgery on beating heart. the patient presented herein demonstrates that the mediastinal and cardiac involvement in hydatid disease could manifest in children with fast growth and rupture.