title: Superior mesenteric artery syndrome resulting from acute massive gastric dilatation caused by Helicobacter pylori-induced acute antral gastritis.
abstract: A previously well, slender 14-year-old boy developed right epigastric pain with vomiting. His vomiting gradually changed to bile-stained fluid for 8 h. He was diagnosed with superior mesenteric artery syndrome with acute massive gastric dilatation by contrast-enhanced computed tomography, which also showed markedly thickened prepyloric gastric wall that may have caused gastric outlet stenosis. Acute gastric mucosal lesions of the antrum were confirmed by endoscopic and histological studies. Endoscopic biopsy specimens using rapid urease test and histopathology detected Helicobacter pylori. Serum anti-H. pylori antibody was negative. He did well after conservative treatment. We conclude that an acute form of superior mesenteric artery syndrome resulted from compression of the artery by acute massive gastric dilatation associated with transient gastric outlet stenosis caused by acute antral gastritis, which resulted from the initial H. pylori infection.
authors.affiliation: Department of Pediatrics, Kanazawa Red Cross Hospital, 2-251 Minma, Kanazawa, 921-8162, Japan. doct1189@kanazawa-rc-hosp.jp.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Hashimoto
authors.affiliation: Department of Pediatrics, Kanazawa Red Cross Hospital, 2-251 Minma, Kanazawa, 921-8162, Japan.
authors.forename: Akiko
authors.initials: A
authors.lastname: Seno
authors.affiliation: Department of Pediatrics, Noto General Hospital, Nanao, Japan.
authors.forename: Akiko
authors.initials: A
authors.lastname: Ishizaki
authors.affiliation: Department of Gastroenterology, Kanazawa Red Cross Hospital, Kanazawa, Japan.
authors.forename: Shuichi
authors.initials: S
authors.lastname: Terasaki
authors.affiliation: Department of Radiology, Kanazawa Red Cross Hospital, Kanazawa, Japan.
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Kimoto
keywords: Acute antral gastritis; Acute gastric dilatation; Helicobacter pylori; Superior mesenteric artery syndrome