label: Subaortic ventricular septal bulge
label_lc: subaortic ventricular septal bulge
description: "A localized hypertrophy of the subaortic segment of the ventricular septum has been frequently described in elderly persons, and variously termed subaortic ventricular septal bulge (VSB), sigmoid-shaped septum, localized or discrete upper septal hypertrophy."