Cardiac involvement is only found in less than 2% of all patients with echi
nococcosis. The case of a 68-year old woman suffering from a hydatid cyst i
n the wall of the right ventricle is reported. The clinical, radiological,
serological, and histological findings are demonstrated. Immediate relief f
rom the symptoms was accomplished by surgical resection of the cyst without
the use of a cardio-pulmonary bypass. The problems of correct diagnosis an
d therapy of this rare disease are discussed with reference to literature.