Left ventricular outflow tract obstruction due to an aneurysm of the membranous septum in a patient with pulmonary atresia and ventricular septum defect - case report.

Although the occurrence of subpulmonary stenosis resulting from displacement of an aneurysm of the membranous septum is well known, resultant subaortic stenosis has not been well documented. We present an unusual case of acquired pulmonary atresia with restrictive ventricular septal defect and associated severe subaortic resulting from an aneurysm of the membranous septum.