title: Massive lower gastrointestinal bleeding from Meckel's diverticulum with heterotopic pancreas: case report and a brief review of the literature.
abstract: BACKGROUND
  Heterotopic pancreas is defined as pancreatic tissue found out of the pancreas proper with no vascular or anatomical connection. It is a rare clinical entity and can be found at any portion of the alimentary system.
  
  
  METHODS
  We describe a case of Meckel's diverticulum with heterotopic pancreas who presented massive lower gastrointestinal bleeding.
  
  
  CONCLUSIONS
  Lower gastrointestinal bleeding due to Meckel's diverticulum with heterotopic pancreas is extremely difficult to make a definitive diagnosis preoperatively especially when it onsets rapidly.
authors.affiliation: Department of Pancreatic Surgery, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China.
authors.forename: Xing
authors.initials: X
authors.lastname: Yang
authors.forename: Kejian
authors.initials: K
authors.lastname: Guo
mesh_terms: D002828:Choristoma / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006801:Humans; D007077:Ileal Diseases / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D008297:Male; D008467:Meckel Diverticulum / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D010179:Pancreas; D016896:Treatment Outcome; D055815:Young Adult