Abstract
Colonic non-epithelial tumors of 120 (2.8%) including 25 carcinoid tumors out of 4, 211 lesions excised endoscopically during a period of the last 6 years were analysed. The frequency, histopathology, endoscopic findings and endoscopic excisional technique of the colonic non-epithelial tumors were discussed. The results were as follows; 1) Histopath-ologically 35 were lymphoid nodules, 25 carcinoid tumors, 20 lymphangiomas, 19 leiomyomas, 18 lipomas, 2 angiomas and 1 lymphoma. 2) Endoscopically sessiled type, 95 lesions (79.2%) ; subpedunculated type, 21 lesions (17.5%) ; pedunculated type, 3 lesions (2.5%) and flat type, 1 (0.8%). 3) "80% excisional method" utilizing burning effects should be introduced and recommended, because it is difficult to resect a submucosal tumor completely but easy to burn out the remaining of the tissue. It might be emphasized that even colonic non-epithelial tumors could be excised endoscopically as well as colonic polyps and that the accurate pathological diagnosis could be made because of the larger specimens.
