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Korean J Gastrointest Endosc > Volume 42(6); 2011 > Article
Korean Journal of Gastrointestinal Endoscopy 2011;42(6): 373-377.
A Case of Gastric Adenocarcinoma Arising from Ectopic Pancreas showing Gastric Outlet Obstruction
Suk Hyun Jung, M.D., Hang Lak Lee, M.D., Seung Sam Paik, M.D.*, Hulin Han, M.D.*, Tae Kyung Ha, M.D., Byeong Bae Park, M.D., Chang Ryeol Choi, M.D. and Soon Young Song, M.D.
Departments of Internal Medicine, *Pathology, Surgery, Radiology, Hanyang University College of Medicine, Seoul, Korea
Abstract
An ectopic pancreas in the gastrointestinal tract is mostly found incidentally and its malignant transformation is extremely rare. We report herein a rare case of malignant transformation of ectopic pancreas in the stomach, associated with gastric outlet obstruction. A 69-year-old woman was admitted to our hospital, complaining of vomiting. Esophagogastroduodenoscopy revealed an encircling submucosal tumor-like lesion on the prepyloric antrum showing outlet obstruction. Abdominal CT showed an enhancing mass on the antrum and PET CT showed hypermetabolic wall thickening. So we performed a subtotal gastrectomy. Surgical specimens showed a moderately differentiated ductal adenocarcinoma, and the tumor cells were strongly positive for cytokeratin 7. The tumor was located close to the ectopic pancreas tissue. The tumor showed subserosal and omental invasion. There was one lymph node metastasis and no distant metastasis. The patient is being followed up in the outpatient department.
Key Words: Pancreatic ductal carcinoma, Stomach neoplasms
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