title: Chronic gastrointestinal bleeding from an internal hernia after Roux-en-Y gastric bypass causing superior mesenteric venous obstruction with associated intestinal varices.
authors.affiliation: Department of Surgery, Mayo Clinic, Rochester, Minnesota.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Feng
authors.affiliation: Department of Surgery, Mayo Clinic, Rochester, Minnesota.
authors.forename: Edwin
authors.initials: E
authors.lastname: Onkendi
authors.affiliation: Department of Surgery, Mayo Clinic, Rochester, Minnesota. Electronic address: sarr.michael@mayo.edu.
authors.forename: Michael G
authors.initials: MG
authors.lastname: Sarr
mesh_terms: D000328:Adult; D000792:Angiography; D016099:Endoscopy, Gastrointestinal; D005260:Female; D015390:Gastric Bypass / Q000009:adverse effects*; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis / Q000209:etiology*; D046449:Hernia, Abdominal / Q000150:complications*; D006801:Humans; D017538:Mesenteric Artery, Superior; D008641:Mesenteric Vascular Occlusion / Q000150:complications* / Q000175:diagnosis; D009767:Obesity, Morbid / Q000601:surgery*; D019106:Postoperative Hemorrhage / Q000175:diagnosis / Q000209:etiology*; D014057:Tomography, X-Ray Computed; D014648:Varicose Veins / Q000175:diagnosis / Q000209:etiology*
keywords: Gastrointestinal bleed; Internal hernia; Intestinal varices; Roux-en-Y gastric bypass; Superior mesenteric venous obstruction