| Theme |
Can we change to treat for diminutive colorectal polyp ? |
| Title |
How to detect, small colorectal adenomas with Narrow Band Imaging during colonoscopy |
| Author |
Hisashi Nakamura |
Department of Gastroenterology, Chofu Surgical Clinicl |
| Author |
Kuang-I Fu |
Department of Gastroenterology, The First Hospital of Chinese Medical University |
| [ Summary ] |
The new Narrow Band Imaging (NBI) system (EVIS LUCERA ELITE) is brighter than the first generation system. Therefore, the system provides better detection of protruded/elevated lesions during colonoscopy with both conventional white light imaging and NBI, even if the colonic lumen is extended by insufflations. On the other hand, superficial colorectal neoplasms are still more difficult to detect in some situations. To detect superficial neoplasms, it is important to keep in mind that these lesions often have special color variations. These lesions may have "brownish areas" or an "O-ring sign" as reported by T. Fujii. These may be observed when withdrawing the colonoscope during NBI. It is possible to detect more superficial neoplasms with these signs in mind when using NBI during colonosocopy. Considering the possibilities for new NBI systems, we will be able to routinely use NBI when withdrawing the colonoscope to detect more lesions. In this paper, we would like to introduce techniques to detect small colorectal adenomas using NBI in our clinic. |