Extra-Gastrointestinal Stromal Tumor thought to be derived from Pancreas—Report of a Case

• Published in: The Japanese Journal of Gastroenterological Surgery Vol. 44; no. 2; pp. 159 - 164
• Main Authors: Taniguchi, Fumihiro, Enoki, Yasuyuki, Koide, Kazuma, Sonoda, Hiromichi, Ikeda, Jun, Shimizu, Hiroki, Ueshima, Yasuo, Shioaki, Yasuhiro, Nakano, Tomotsugu, Itokawa, Yoshiki
• Format: Journal Article
• Language: Japanese
• Published: The Japanese Society of Gastroenterological Surgery 2011
• Subjects: extra-gastrointestinal stromal tumor (EGIST); gastrointestinal stromal tumor (GIST); pancreas
• ISSN: 0386-9768; 1348-9372
• DOI: 10.5833/jjgs.44.159

A 57-year-old woman admitted for an abdominal tumor was found in abdominal computed tomography (CT), magnetic resonance image (MRI), angiography, and upper gastrointestinal endoscopy to have a gastrointestinal stromal tumor (GIST) of the duodenum with an extra pedunculated gastrointestinal growth. In the operative findings, a 10cm tumor outside the duodenum and an independent 4cm tumor in the pancreas head were diagnosed as pancreatic tumors with lymph node metastasis, necessitating pancreaticoduodenectomy. Histological examination showed these tumors to be extra-GIST of the pancreas with lymph node metastasis or peritoneal dissemination. We report this rare case together with a review of the literature.