Abstract
Superior mesenteric artery syndrome (SMAS) is an unusual condition where the third part of the duodenum is compressed between the superior mesenteric artery and the aorta. Certain factors increase the risk for SMAS: congenital abnormalities, weight-related conditions, and/or surgical procedures that result in alterations of the anatomy of the spine and surrounding structures, including the aorta and the superior mesenteric artery. This article provides a nutrition-focused overview of SMAS, including symptoms, diagnosis, pathophysiology, and treatment.