[Congenital aneurysms of the membranous ventricular septum (author's transl)].

In 3 patients with a congenital aneurysm of the membranous portion of the ventricular septum diagnosis could be made by angiography. One of these patients was clinically asymptomatic, while the two other patients were transferred for surgery because of right ventricular outflow tract obstruction or intracardiac left-to-right shunt. These both patients underwent successful open heart corrections. Aneurysms with a different intracardiac localization could be found. One of the cases represents an unusual association with corrected transposition of the great vessels.