Rupture of left sinus of Valsalva aneurysm into the pulmonary artery.

Congenital sinus of Valsalva aneurysm is an uncommon lesion that frequently presents after rupture in adult life. This report describes a patient with a left sinus of Valsalva aneurysm that ruptured into the main pulmonary artery, a previously unreported anatomic variant. Anatomic and clinical features of previously reported cases of ruptured sinus of Valsalva aneurysm are reviewed.