Rare cause of angina: mechanical compression from hydatid cyst.

A young man presented with complaints of angina on exertion and dyspnoea on exertion for the last 3 months. On evaluation, he was found to have a cystic mass in the left ventricle with severe left ventricular systolic dysfunction. A cardiac MRI revealed a multiloculated mass in the left ventricle with multiple septa with internal enhancement and CT coronary angiography revealed compression of a coronary artery by the cystic mass. Serological tests for hydatid came out strongly positive, and subsequently, he underwent surgical excision under cardiopulmonary bypass. Postoperatively, he is doing well with no complaints.