Abstract
A case of endosopically polypectomised carcinoid tumor of the duodenum is reported. A 56-year-old woman without symptom visited our hospital for examiantion of the upper GI tract. Upper GI tract series and endoscopic examination showed a semipedunculated submucosal tumor in the descending portion of duodenum. Endoscopical polypectomy of this tumor was performed to make the accurate histological diagnosis. The polypectomised tumor meaured 2.7×2.5×2.1cm. Microscopic examination showed no tumor cells at the resected stumps and electron microscopic examination revealed the picture of carcinoid tumor. CT and ultrasound afer established diagnosis did not demonstrate any lymph node and distant metastases. The patient has been being observed carefully because she rejected the operation. Local recurrence or distant metastasis was not observed during the following 19 months.