Congenital diverticulum of the heart of biventricular origin.

An extremely rare diverticulum arising from both ventricles at the caudal end of the intraventricular septum was diagnosed in a 2.9 kg infant. The diverticulum was removed successfully while a coexisting ventricular septal defect was left open for further management. The types and complications of such diverticula are described and the need for early surgical intervention is stressed.