title: Giant polypoid gastric heterotopia in the small intestine in a boy: A case report and literature review.
abstract: BACKGROUND
  Heterotopic gastric mucosa has been described at various locations of the body; however, the polyp composed of heterotopic gastric mucosa in the small intestine is rare.
  
  
  METHODS
  A 15-year-old boy visited us for investigation of recurrent episodes of melena. Capsule endoscopy (CE) revealed a polypoid tumor in the ileum, with an active nearby hemorrhage. Contrast-enhanced computed tomography (CECT) showed a tumor in the right quadrant of the abdomen, with a diameter of about 18 × 14 mm.
  
  
  METHODS
  The patient was diagnosed with polypoid gastric heterotopia.
  
  
  METHODS
  We performed an operation to resect the lesion.
  
  
  RESULTS
  The patient recovered smoothly after surgery and was discharged on postoperative day 7 and followed up for 3 months. He has not experienced gastrointestinal intestinal (GI) symptoms up to now.
  
  
  CONCLUSIONS
  Giant polypoid gastric heterotopia in the small intestine is extremely rare, which can express as an occasional finding with or without symptoms. Surgical resection is the preferred therapy when symptoms appear.
authors.affiliation: Department of Digestive Diseases, Wenzhou Central Hospital, The Dingli Clinical Institute of Wenzhou Medical University, Wenzhou, Zhejiang, P.R. China.
authors.forename: Jing
authors.initials: J
authors.lastname: Cai
authors.forename: Haibo
authors.initials: H
authors.lastname: Yu
mesh_terms: D000293:Adolescent; D053704:Capsule Endoscopy / Q000379:methods; D002828:Choristoma / Q000473:pathology*; D003937:Diagnosis, Differential; D013505:Digestive System Surgical Procedures / Q000379:methods*; D004210:Dissection / Q000379:methods; D005753:Gastric Mucosa; D006801:Humans; D007410:Intestinal Diseases / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery; D008297:Male; D008551:Melena / Q000175:diagnosis / Q000209:etiology; D011127:Polyps / Q000175:diagnosis*; D014057:Tomography, X-Ray Computed / Q000379:methods; D016896:Treatment Outcome