| Theme |
Narrow Band Imaging (NBI) / Fuji Intelligent Color Enhancement (FICE) and pit pattern in colon and rectum |
| Title |
Microvascular architecture of localized colorectal lesions observed with Narrow Band Imaging (NBI) system |
| Author |
Yoshiki Wada |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Hiroshi Kashida |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Shin-ei Kudo |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Toshihisa Hosoya |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Kunihiko Wakamura |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Hiroshi Kanie |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Nobunao Ikehara |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Fuyuhiko Yamamura |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Kazuo Ohtsuka |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Shigeharu Hamatani |
Department of Pathology, Showa University Northern Yokohama Hospital |
| [ Summary ] |
The recent development of NBI enables us to observe microvascular structural changes. The diagnosis of colorectal tumors through magnified colonoscopic findings of microvascular architecture is simple and useful. Colonic microvascular patterns were classified into six categories ; normal, faint, network, dense, irregular and sparse. If we assume that faint patterns can be used to diagnose hyperplastic polyps, we are able to differentiate between neoplastic and non-neoplastic lesions with a sensitivity and specificity of 90.2 % and 98.2 %, respectively. Assuming that either irregular or sparse patterns represented invasive cancer, the sensitivity and specificity were 94.6 % and 86.4 %.
Utilizing NBI systems is useful for distinguishing neoplastic from non-neoplastic lesions, and also for distinguishing cancers from adenomas. |