抄録
We reviewed the data of 35 cases of colorectal carcinoid tumors seen over a period of 11 years (2004-2014) . The tumor was located in the rectum in all cases. Of the 35, 32 were operated by endoscopic resection (3 EMRs, 29 ESDs) , and 2 cases required additional surgical treatment due to lymph vessel permeation. In regard to the 29 cases treated by ESD, 9 showed a positive vertical margin, and 8 showed an uncertain vertical margin due to heat-damage. The size of the carcinoid tumors in the cases with a positive or uncertain vertical margin varied from 3 to 12mm, indicating the size had no influence on the risk of a positive margins, and that there might be a technical limitation to the ESD method itself. After endoscopic resection of the carcinoid tumors, the patients were followed by periodic follow-up examinations in the same way as carcinoma cases. Twenty-three (83.6%) of 32 cases with endoscopic resection were operated by periodic endoscopy. The recurrence-free time recorded in this study was 6 to 56 months (median 23 months) : none of the patients developed recurrence during the observation period. We conclude that there is a need to encourage patients to undergo frequent follow-up examinations.
