A gastrointestinal stromal tumor of the duodenum masquerading as a pancreatic head tumor

• Published in: World journal of gastroenterology : WJG Vol. 13; no. 24; pp. 3396 - 3399
• Main Authors: Kwon, Sung Ho, Cha, Hee-Jeong, Jung, Seok-Won, Kim, Byung-Chul, Park, Jae-Serk, Jeong, In-Du, Lee, Jong-Hwa, Nah, Yang-Won, Bang, Sung-Jo, Shin, Jung-Woo, Park, Neung-Hwa, Kim, Do-Ha
• Format: Journal Article
• Language: English
• Published: United States Division of Gastroenterology,Department of Internal Medicine,University of Ulsan College of Medicine,Ulsan University Hospital,Ulsan,Korea%Department of Pathology,University of Ulsan College of Medicine,Ulsan University Hospital,Ulsan,Korea%Department of Radiology,University of Ulsan College of Medicine,Ulsan University Hospital,Ulsan,Korea%Department of Surgery,University of Ulsan College of Medicine,Ulsan University Hospital,Ulsan,Korea 28-06-2007; Baishideng Publishing Group Co., Limited
• Subjects: Case Report; Diagnosis, Differential; Duodenal Neoplasms - diagnosis; Duodenal Neoplasms - pathology; Gastrointestinal Stromal Tumors - diagnosis; Gastrointestinal Stromal Tumors - pathology; Humans; Male; Middle Aged; Pancreatic Neoplasms - diagnosis; Pancreatic Neoplasms - pathology; Stomach Neoplasms - surgery; Tomography, X-Ray Computed; Duodenum; Pancreas head tumor; Gastrointestinal stromal tumor
• ISSN: 1007-9327; 2219-2840
• DOI: 10.3748/wjg.v13.i24.3396

Gastrointestinal stromal tumor (GIST) represents the most common kind of mesenchymal tumor that arises from the alimentary tract. GIST is currently defined as a gastrointestinal tract mesenchymal tumor showing CD117 (c-kit protein) positivity at immunohistochemistry. Throughout the whole length of the gastrointestinal tract, GIST arises most commonly from the stomach followed by the small intestine, the colorectum, and the esophagus. Only 3%-5% of GISTs occur in the duodenum, and especially, if GIST arises from the C loop of the duodenum, it can be difficult to differentiate from the pancreas head mass because of its anatomical proximity. Here, we report a case of duodenal GIST, which was assessed as a pancreatic head tumor preoperatively.