Superior mesenteric artery pseudoaneurysm after blunt abdominal trauma
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Updated: May 13, 2026

Multimodality Diagnosis of Mesenteric Ischemia
Published on: July 21, 2023
Alex Bryan Olsen1, Taruna Ralhan, John H Harris
1Department of General Surgery, St. Joseph's Hospital and Medical Center, Phoenix, AZ 85013, USA. Alex.olsen@dignityhealth.org
Abstract:
True aneurysms and pseudoaneurysms of the visceral arteries are uncommon. Visceral artery aneurysms (VAAs) represent 0.1-0.2% of all vascular aneurysms and were also found in 0.1% of autopsies. VAAs most commonly affect the splenic (60%), hepatic (20%), and superior mesenteric (9%) arteries. Mesenteric injury caused by blunt abdominal trauma is relatively rare. A 30-year-old man arrived at our trauma hospital and was found to have a traumatic pseudoaneurysm of the superior mesenteric artery (SMA) after a motor vehicle collision. To date, only 10 visceral arterial pseudoaneurysms have been reported in the literature. We present an 11th case of a pseudoaneurysm involving the SMA after blunt abdominal trauma.
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