title: [Heterotopic gastric mucosa in the rectum: Report of a case].
abstract: BACKGROUND
  Ectopic gastric mucosa has been described in different locations of the digestive tract, but that of the rectum is the least frequent.
  
  
  METHODS
  The case is described of a 48 year-old woman being investigated by the gastrointestinal department due to rectal bleeding and rectal tenesmus. Colonoscopy showed a diverticular cavity 3 cm, which was reported by histology as fundic-type heterotopic gastric mucosa. Barium enema and abdominopelvic CT showed a diverticular image at level of the right posterolateral wall of the rectal ampulla. Trans-rectal diverticulectomy was performed with primary closure of the resulting mucosal defect. The surgical specimen showed areas of gastric epithelium with no signs of atypia.
  
  
  CONCLUSIONS
  It is not known whether the origin of heterotopic gastric mucosa occurs during foetal development or is the result of abnormal regeneration under inflammatory conditions. It is usually clinically asymptomatic or presents as haematochezia, especially in cases where gastric acid is being produced. In these cases there must be an initial treatment with proton pump inhibitors, although the definitive treatment is always surgical or endoscopic excision of the mucosa.
authors.affiliation: Servicio de Cirugía General y del Aparato Digestivo, Hospital Sierrallana, Torrelavega, Cantabria, España. Electronic address: pablocolsa@hotmail.com.
authors.forename: Pablo
authors.initials: P
authors.lastname: Colsa-Gutiérrez
authors.affiliation: Servicio de Cirugía General y del Aparato Digestivo, Hospital Sierrallana, Torrelavega, Cantabria, España.
authors.forename: Mahgol
authors.initials: M
authors.lastname: Kharazmi-Taghavi
authors.affiliation: Servicio de Cirugía General y del Aparato Digestivo, Hospital Sierrallana, Torrelavega, Cantabria, España.
authors.forename: Rocío Daniela
authors.initials: RD
authors.lastname: Sosa-Medina
authors.affiliation: Servicio de Cirugía General y del Aparato Digestivo, Hospital Sierrallana, Torrelavega, Cantabria, España.
authors.forename: José Ignacio
authors.initials: JI
authors.lastname: Berrío-Obregón
authors.affiliation: Servicio de Cirugía General y del Aparato Digestivo, Hospital Sierrallana, Torrelavega, Cantabria, España.
authors.forename: Alfredo
authors.initials: A
authors.lastname: Ingelmo-Setién
mesh_terms: D002828:Choristoma / Q000473:pathology* / Q000601:surgery; D005260:Female; D005753:Gastric Mucosa; D006471:Gastrointestinal Hemorrhage / Q000209:etiology; D006801:Humans; D008875:Middle Aged; D012002:Rectal Diseases / Q000473:pathology* / Q000601:surgery
keywords: Ectopic gastric mucosa; Endoscopic mucosal resection; Mucosa gástrica ectópica; Recto; Rectum; Resección mucosa endoscópica