Membranous Septum Aneurysm Obstructing Right Ventricular Outflow Tract

An unusual case of right ventricular outflow tract obstruction caused by a ıneınbranou s septuın aneurysın in a patient with ventricular septal defect is presented. An associated inlet type ventricular septa l defect was c losed wi th a polytetrafluoroethylene patch. The aneurysmal sac was plicated by taking obliteration sutures at its base and excised. Secondary infundibular hypertrophy was resected and infundibulotomy was closed with a pericardial patch. Patient displayed an uneventful course in the postoperative pe riod and d ischarged on the fifth postoperative day. A fo ll ow-up echocardiography at the second postope rat ive month revealed no abnormalities.