| Theme |
Considering of the endoscopic classification in development of early colorectal cancer |
| Title |
Management of type Is + IIc early colorectal cancer |
| Author |
Hiroshi Kanie |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Shin-ei Kudo |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Hiroshi Kashida |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Nobuhiko Ikehara |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Yui Kudo |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Kazuo Ohtsuka |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Fuyuhiko Yamamura |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Hideyuki Miyaji |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Yoshiki Wada |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Yoshihisa Hosoya |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Kunihiko Wakamura |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Masayuki Inui |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Orie Takemura |
Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author |
Shigeharu Hamatani |
Department of Pathology, Showa University Northern Yokohama Hospital |
| [ Summary ] |
Depressed lesions have a maked tendency to exhibit malignant character, and the recognition and timely treatment of these lesions are both necessary to improve morbidity and mortality due to colorectal cancer. Type Is + IIc lesions are defined as those having depressed areas and which are elevated above the surrounding normal mucosa. These lesions are elevated as a result of submucosal invasion and desmoplastic reactions, and maybe mistakenly thought to be protruded tumors. 102 depressed type tumors, including 16 type Is + IIc lesions were analyzed. The average size of type Is + IIc lesions was 12.1 mm. However, all had invaded the submucosal layer to a massive degree. The depressed areas displayed type V pit patterns. Lesions are indication for surgical operation. Chromoscopy is mandatory for an accurate diagnosis of these lesions. Pit pattern analysis helps to predict the histology of these lesions, and is therefore useful in determining treatment options. |