Superior mesenteric artery syndrome and nutcracker phenomenon

Abstract

The superior mesenteric artery (SMA) syndrome is a rare cause of proximal intestinal obstruction in which the third part of the duodenum is compressed between SMA and the aorta due to narrowing in aortomesenteric angle. High index of suspicion, in the presence of known risk factors, is the key to early diagnosis. We describe a case of SMA syndrome in a 17-year-old boy who admitted with a long history of abdominal pain and intermittent vomiting. The computed tomography (CT) features were diagnostic of SMA syndrome. The CT also showed partial compression of the left renal vein by SMA with more proximal dilatation (nutcracker phenomenon). He received conservative medical treatment, with a favorable outcome. Our case is unique in that two rare syndromes which rarely coexist found together in our patient.