title: Upper gastrointestinal hemorrhage due to duodenal stromal tumor.
abstract: BACKGROUND
  Gastrointestinal stromal tumor represents a rare neoplasm that originates in the muscular wall of the hollow viscera.
  
  
  OBJECTIVE
  To report gastrointestinal stromal tumor as a source of upper gastrointestinal bleeding, which required urgent surgical control.
  
  
  METHODS
  A man with 61 years old was admitted to the emergency service sustaining hematemesis and melena. Endoscopy showed active bleeding from a tumor in the second portion of the duodenum, which was controlled by heater probe cauterization. Surgery was performed through a median laparotomy. A local resection of a 4 cm tumor in the second portion of the duodenum was carried out, together with a primary end-to-end anastomosis and a duodenal diverticulization. No complications happened during the post-operative period. Morphologic examination showed gastrointestinal stromal tumor with no atypical mitosis and a preserved capsule.
  
  
  CONCLUSIONS
  Albeit not being common, gastrointestinal stromal tumors can represent a source of substantial gastrointestinal hemorrhage.
authors.affiliation: Emergency Service, Department of Surgery, 'Santa Casa' School of Medicine, São Paulo, SP, Brazil. jgparreira@uol.comb.br
authors.forename: José Gustavo
authors.initials: JG
authors.lastname: Parreira
authors.forename: Wilson
authors.initials: W
authors.lastname: de Freitas
authors.forename: Samir
authors.initials: S
authors.lastname: Rasslan
mesh_terms: D004379:Duodenal Neoplasms / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D005763:Gastroenterostomy; D006471:Gastrointestinal Hemorrhage / Q000209:etiology* / Q000601:surgery; D005773:Gastroscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D017154:Stromal Cells / Q000473:pathology; D014057:Tomography, X-Ray Computed