Resection of an Isolated Spontaneous Superior Mesenteric Artery Dissection

Abstract

We describe a case of successful surgical reconstruction of isolated spontaneous superior mesenteric artery (SMA) dissection in a 54-year-old man. However, follow-up enhanced computed tomography (CT) after 7 weeks revealed progressive enlargement of the false lumen from 18.5 mm to 27.0 mm and stenosis on the distal side. To maintain the patency of all branches, we resected the intima to eliminate the stenosis and perform endoaneurysmorrhaphy of the dilated false lumen. Postoperative CT scans showed improved patency in the SMA, and no significant changes were observed after 18 months.