A case of superior mesenteric artery syndrome with gastric perforation in a 16-year-old woman is reported. The patient was admitted to the hospital because of abdominal pain and vomiting. Conservative therapy was started with a suspicion of superior mesenteric artery syndrome, but 2days later the abdominal pain was intensified. Emergency operation was performed with a diagnosis of generalized peritonitis. At laparotomy, gastric perforation associated with superior mesenteric syndrome was diagnosed. Partial gastrectomy and dissection of the Treitz' ligament were performed. The postoperative course was uneventful.
Dissection of the Treitz' ligament that is minimal invasive is thought to be an appropriate procedure for patients with the disease in poor general condition.