Superior mesenteric artery syndrome
Young diabetic man with intermittent abdominal pain
Loading Stack -
0 images remaining
Extreme dilatation of the stomach and proximal duodenum with tapered narrowing of the 3rd part of the duodenum as it passes between the SMA and aorta. Decreased aortomesentric angle is noted. The findings are suggestive of SMA syndrome.
Endoscopy reported luminal narrowing of the third segment of duodenum. The patient refused surgical intervention, so there is no diagnostic proof of this diagnosis.
SMA syndrome is one of the abdominal entrapment syndromes in which the third part of the duodenum is trapped as it passes between the aorta and superior mesenteric artery. The proximal parts of the duodenum and stomach are usually dilated in these patients. The aortomesenteric angle is less than 41 degrees and is best evaluated on sagittal images.
- Jeffrey Kah Keng Fong, Angeline Choo Choo Poh, Andrew Gee Seng Tan, Ranu Taneja. Imaging Findings and Clinical Features of Abdominal Vascular Compression Syndromes. (2014) American Journal of Roentgenology. doi:10.2214/AJR.13.11598