RIGHT ATRIAL HEMANGIOPERICYTOMA WITH HEMOPERICARDIUM DURING INFANCY

A male infant with benign hemangiopericytoma of the right atrium is re ported. His chief complaint was acute respiratory distress secondary t o bloody pericardial effusion. Although the entire mass could not be r emoved surgically, there was no recurrence of cardiac tamponade or gro wth of the residual mass during a follow-up period of 3 years. This pa tient is, to our knowledge, the youngest one with primary cardiac hema ngiopericytoma so far reported.