A Case of Superior Mesenteric Artery Occlusion Caused by Portal Vein Stenting.

Portal vein stenting treats stenosis or thrombosis of the portal venous system with relatively high technical and clinical success rates. However, complications have been reported. We present a case of a 58-year-old woman with a history of pancreatic head cancer surgery who developed superior mesenteric vein occlusion owing to recurrent mesenteric lesions. Portal vein stenting was performed; however, it resulted in superior mesenteric artery occlusion, which caused extensive intestinal ischemia. Gas from the intestinal necrosis migrated into the superior mesenteric artery and superior mesenteric vein, and thrombotic occlusion of the portal vein stent was observed. This complication, which is characterized by superior mesenteric artery occlusion induced by portal vein stenting, is unique. Furthermore, this case highlights the need for a thorough preoperative evaluation and careful consideration to avoid such a rare but severe complication.