Interventricular septum (IVS) defects are among the most frequent cardiac anomalies seen in childhood(1). The system developed by Soto et al. is frequently used to classify IVS defects(1). The IVS has two components: the small membranous septum and the much larger muscular septum(1). The most frequent congenital heart defects in the neonatal period are ventricular septum defects (VSDs). These usually occur in the muscular septum. In adults, IVS defects are rare and are usually seen in the membranous septum. Ventricular septum aneurysms (VSAs) can rarely...

A 47-year-old male presented to the cardiology clinic complaining of pain with effort. No abnormalities were found on echocardiography. The resting electrocardiogram (ECG) and laboratory results were normal. There were signs of ischemia on stress testing, so cardiac MDCT was planned. An ECG-triggered cardiac MDCT study was performed after injecting 75 mL of non-ionic contrast fluid via an antecubital vein with a 64-detector row Toshiba Multislice Aquilion 64 System (Toshiba Medical Systems, Otawara, Japan). The images were reviewed on a Vitrea workstation (Vital Images, Fairfield,...

These showed a 30×25×30-mm aneurysm in the IVS growing towards the right ventricle. Contrast filled the aneurysm. No thrombi were detected within the aneurysm. The coronary arteries showed no pathology. The aneurysm was not seen on repeated echocardiography. No narrowing of the right ventricle outlet was seen on echocardiography. Surgical treatment was planned, but our patient denied surgical treatment.

Discussion The cardiac chambers develop in utero. The ventricles are divided by the interventricular septum and IVS development ends at birth(1). Problems with IVS development can cause defects in the muscular or membranous septum seen after birth. In the neonatal period, most IVS defects are located in the muscular ventricular septum(1). Kirklin et al. classified VSDs as anterior, midmuscular, apical, and posterior; 50% of neonatal heart defects are VSDs. In 80% of VSD cases, there are other congenital heart defects, while 20% of the cases...

1. Mınette, Mary s.; Sahn, David j. Ventricular septal defects.Circulation. 2006; 114.20: 2190-2197. 2. Choi, M., Im Jung, J., Lee, B. Y., & Kim, H. R.. Ventricular septal aneurysms in adults: findings of cardiac CT images and correlation with clinical features. Acta Radiologica. 2011; 52: 619-623. 3. Ammash, Naser M. Warnes, Carole A. Ventricular septal defects in adults. Annals of Internal Medicine. 2001; 135.9: 812-824. 4. Bashore, T. M. Adult congenital heart disease right ventricular outflow tract lesions.Circulation. 2007;115: 1933-1947.