Coronary and atrial compression by a giant cardiac hemangioma.

A 57-year-old asymptomatic man showed a round echo-dense mass, partially occupying the left atrium on echocardiography. Magnetic resonance localized the mass in the atrioventricular groove, inside the pericardial space, and showed a large hepatic mass too. Computed tomography revealed significant compression of the left main coronary artery and of the left pulmonary veins outlet. The tumor was surgically removed and diagnosed as hemangioma. Heart hemangiomas are extremely rare; they are usually asymptomatic but sometimes they grow rapidly, causing various symptoms. In our case, life-threatening compression of the left main coronary artery and of the pulmonary veins warranted the intervention.