| Theme | Mystery concerning the lower rectum | |
|---|---|---|
| Title | Characteristics of advanced colorectal cancer located in the lower rectum | |
| Publish Date | 2010/11 | |
| Author | Yuichi Mori | Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author | Shin-ei Kudo | Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author | Shungo Endo | Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author | Kunihiko Wakamura | Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author | Yoshiki Wada | Digestive Disease Center, Showa University Northern Yokohama Hospital |
| Author | Hideyuki Miyachi | 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 |
| [ Summary ] | The aim of our study was to clarify the characteristics of colorectal T2 cancers located in the rectum (Rb). The subjects were 195 patients with colorectal T2 cancers, which were surgically resected at our center from April 2001 to April 2009. The lesions were classified according to their form as viewed with endoscopy. They were divided into four categories : (A) Depressed type (the periphery consisting of normal mucosa), (B) Laterally spreading type, (C) Protruded type, and (D) Ulcerative type (the periphery consisting of neoplastic tissue). Category A lesions are those which can be estimated to have developed from depressed type early cancers. In contrast to T1 cancer, depressed type T2 colorectal cancers exhibited lower occupying rates in the Rb than other locations, which suggests difficult questions concerning the growth patterns of rectal cancers. | |