title: Report of two cases of gastric cancer after bariatric surgery: lymphoma of the bypassed stomach after Roux-en-Y gastric bypass and gastrointestinal stromal tumor (GIST) after vertical banded gastroplasty.
abstract: We report two new cases of gastric cancer diagnosed after a bariatric operation. The first case is a 66-year-old male who 3 years after gastric bypass suffered from a perforation of the fundus that was found to be secondary to a diffuse large B-cell lymphoma of the distal stomach. The second case is a 47-year-old woman who presented 12 years after a vertical banded gastroplasty with a gastric pouch outlet obstruction caused by a gastrointestinal stromal tumor (GIST). Based on the few reports of cancer in the literature, analysis of these cases suggests that the main risk of gastric cancer after bariatric surgery comes from the delayed diagnosis of malignancy.
authors.affiliation: Department of Abdominal Surgery and Transplantation, CHU, ULG, Domaine du Sart Tilman, Liège, Belgium. A.DeRoover@chu.ulg.ac.be
authors.forename: Arnaud
authors.initials: A
authors.lastname: de Roover
authors.forename: Olivier
authors.initials: O
authors.lastname: Detry
authors.forename: Laurence
authors.initials: L
authors.lastname: de Leval
authors.forename: Carla
authors.initials: C
authors.lastname: Coimbra
authors.forename: Claude
authors.initials: C
authors.lastname: Desaive
authors.forename: Pierre
authors.initials: P
authors.lastname: Honoré
authors.forename: Michel
authors.initials: M
authors.lastname: Meurisse
mesh_terms: D000368:Aged; D000970:Antineoplastic Agents / Q000627:therapeutic use; D050110:Bariatric Surgery / Q000009:adverse effects*; D003131:Combined Modality Therapy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008223:Lymphoma / Q000188:drug therapy / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000188:drug therapy / Q000601:surgery; D013274:Stomach Neoplasms / Q000188:drug therapy / Q000601:surgery*
chemical_list: D000970:Antineoplastic Agents