Proximal sano anastomosis aneurysm due to degeneration of bovine pericardial patch.

We report a 5-year-old girl with hypoplastic left heart syndrome who originally underwent a Norwood procedure with a Sano shunt. Subsequent procedures included a bidirectional Glenn and extracardiac Fontan with a Gore-Tex graft (W.L Gore and Associates, Flagstaff, AZ). The patient was found to have a heart murmur on a follow-up visit 3 years later. Echocardiography and computed tomography imaging showed an aneurysm of the proximal Sano anastomosis. The patient underwent successful surgical repair.