Unruptured Sinus of Valsalva Aneurysm Obstructing the Left Ventricular Outflow Tract: An Uncommon Presentation in Childhood.

Congenital aneurysms of the sinus of Valsalva are uncommon abnormalities that are usually silent and slowly progressive without symptoms of cardiac dysfunction unless catastrophic rupture occurs. However, in rare cases, unruptured aneurysms can produce symptoms resulting from compression of adjacent structures, ventricular outflow tract obstruction, heart block, and coronary and valvular insufficiency. We report a case of a single unruptured sinus of Valsalva aneurysm producing left ventricular outflow tract obstruction in an 8-year-old boy who presented with chest pain on exertion.