| Theme | Surveillance after Treatment for Colorectal Tumors | |
|---|---|---|
| Title | Appropriate Surveillance among Subjects Diagnosed as Having Negative Colonoscopies | |
| Publish Date | 2018/07 | |
| Author | Seiji Kimura | Division of Gastroenterology and Endoscopy, Aomori Rousai Hospital |
| [ Summary ] | Persons without detected polyps during initial colonoscopy are defined as having negative colonoscopies. In the US guidelines, they are recommended a ten year interval for repeated colonoscopies after initial negative examinations. In the Japanese literature there is no data as to the surveillance of subjects undergoing negative colonoscopy as a baseline. Although there are several reports which support the recommended ten year interval for follow-up colonoscopy for those with negative colonoscopies as a baseline, other reports support more intensive follow-ups than the recommended intervals. Another problem is the risk of interval colorectal cancer after previous negative colonoscopy. Despite a very low incidence of interval cancer after negative colonoscopy lesions may occur in patients for whom no lesions were observed during initial colonoscopy. Special attention is needed for those with positive fecal occult blood samples and negative results during subsequent colonoscopies. | |