| Theme | Small invasive cancer of colon and rectum less than 10 mm | |
|---|---|---|
| Title | Management of colorectal cancer less than 10 mm in diameter, on the basis of pit pattern diagnosis | |
| Publish Date | 2008/09 | |
| Author | Orie Takemura | Digestive Disease Center Showa University Northern Yokohama Hospital |
| Author | Shin-ei Kudo | Digestive Disease Center Showa University Northern Yokohama Hospital |
| Author | Nobunao Ikehara | Digestive Disease Center Showa University Northern Yokohama Hospital |
| Author | Hiroshi Kanie | Digestive Disease Center Showa University Northern Yokohama Hospital |
| Author | Hiroshi Kashida | Digestive Disease Center Showa University Northern Yokohama Hospital |
| Author | Fumio Ishida | Digestive Disease Center Showa University Northern Yokohama Hospital |
| [ Summary ] | Magnifying colonoscopy is useful for diagnosing histological type and depth by assessing the microstructure of mucosal surfaces in detail. This technology is also useful for diagnosing small lesions. Lesions with type VN pit pattern, which indicate submucosal invasive cancer, should be treated surgically. Lesions with type VI pit pattern should be considered separately, in relation to morphological characteristics. Depressed type neoplasms are likely to invade submucosal layers even when they are small. On the other hand, some of protruded type neoplasms with irregular pit pattern do not usually invade the submucosa. Although flat and protruded type small lesions with highly irregular pit pattern are first treated endoscopically, depressed type small lesions with this type of pit pattern may not be treated adequately with surgical techniques. It is particularly important that the clinical and pathological nature of these small colorectal neoplasms be recongnized when choosing appropriate therapies. | |