Fig. 24
From: Imaging of non-neoplastic duodenal diseases. A pictorial review with emphasis on MDCT
A 31-year-old woman with suspected superior mesenteric artery (SMA) syndrome. Axial contrast-enhanced CT images (a, b, and c) show a dilated proximal duodenum (*) with abrupt narrowing of the third portion (black arrows) corresponding with the course of SMA (white arrow). Reformatted sagittal contrast-enhanced CT image demonstrates compression of the third portion of the duodenum (black arrow) between the SMA (white arrow) and aorta