[Infectious aneurysm of the superior mesenteric artery in a 14-year-old child].

A 14-year-old girl developed an infectious aneurysm of superior mesenteric artery secondary to a bacterial endocarditis. Diagnosis was suggested by ultrasound images demonstrating a hypoechogenic structure with imparted turbulent systolic movements in superior mesenteric artery region. Diagnosis was confirmed at operation involving an obliterating endo-aneurysmoraphy.