Pseudoaneurysm of interventricular membranous septum: a rare late complication after repeated valve replacements

Abstract

A 39-year-old female patient who had aortic and mitral valve replacement due to rheumatic heart disease was also found to have cystic mass in the right ventricle on echocardiography during late routine control. The cystic mass identified on echocardiography was shown to be a pseudoaneurysm that develops from the membranous section of the interventricular septum and grows toward the right heart by ECG-triggered cardiac computed tomography performed for differential diagnosis. Because the patient did not accept the surgery, regular follow-ups were recommended.

An unusual complication of myocardial infarction

“…The typical aspect is of a rightward outpouching of the basal septum with a narrow neck and no shunt between the ventricles [1][2][3][4][5]. However, septal pseudoaneurysms have been described in both the middle apical region and the membranous septum [8][9][10][11][12].…”