title: Duodenal GIST presenting as large pancreatic head mass: an uncommon presentation.
abstract: BACKGROUND
  Duodenal gastrointestinal stromal tumors (GIST) are uncommon. They usually present with gastrointestinal bleed, upper abdominal pain or mass abdomen. Tumor arising from the second part of duodenum can be wrongly diagnosed as pancreatic mass.
  
  
  METHODS
  We present a case of a thirty-year-old male who came with chief complaint of mass upper abdomen. On laparotomy there was a 15x10 cm mass arising from the whole of anterior surface head of pancreas and was attached with the second part of duodenum for about 1-2 cm only. Patient underwent pancreaticoduodenectomy and histopathology revealed that tumor was arising from the duodenal wall.
  
  
  CONCLUSIONS
  Duodenal gastrointestinal stromal tumors can grow exophytically into large mass and involve the pancreas without infiltrating microscopically and present as pancreatic head mass.
authors.affiliation: Government Medical College. Amritsar, India. sumitoj@rediffmail.com
authors.forename: Sumitoj
authors.initials: S
authors.lastname: Singh
authors.forename: Surinder
authors.initials: S
authors.lastname: Paul
authors.forename: Pawan
authors.initials: P
authors.lastname: Khandelwal
authors.forename: Sudhir
authors.initials: S
authors.lastname: Khichy
mesh_terms: D000328:Adult; D004379:Duodenal Neoplasms / Q000473:pathology* / Q000601:surgery; D046152:Gastrointestinal Stromal Tumors / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D010190:Pancreatic Neoplasms / Q000473:pathology*; D016577:Pancreaticoduodenectomy