of the Left Main Coronary Artery

showed an intrapericardial hydatid cyst attached to the diaphrag-matic surface of both ventricles without infiltrating them. Exclusively cardiac hydatid disease is rare (less than 2%). Echinococcus granulosus reaches the heart structures through systemic circulation or by extension from adjacent structures. Clinical development depends on the size, location and integrity of the cyst, but in some cases it is asymptomatic.1 Diagnosis canbecomplicated. It shouldbesuspected fromachest radiography or echocardiography, which can easily detect defor-mities in the cardiac silhouette, and in the case of echocardiography, the possible existence of functional compromise. The study should subsequently be completed using computed tomography and/or high-resolution magnetic resonance imaging, which are superior to ultrasound tests in detecting structures within the mass and in defining their scope and relationship with adjacent tissues, with a view to possible surgery.2 The definitive treatment is surgical resection of the cyst, especially to avoid complications. It is sometimes used in association with medical treatment with antiparasitic drugs. In this case, the patient was not operated on, as hewas asymptomatic and rejected the intervention