Nagasako K
Institute of Gastroenterology, Tokyo Women's Medical College.
Gan No Rinsho. 1988 Aug;34(10):1326-32.
Early colon cancer are divided into pedunculated (with constriction) group and broad-based (without stalk) group. The former is more of ten diagnosed, particularly in the earlier cancers (m cancer). However, the possibility that broad-based group may be missed during the endoscopic examination cannot be neglected. Colonoscopy should be performed with scrupulous care not to miss small broad-based lesions. They are frequent in the rectum and the right-sided colon. Flat or depressed type of early cancers have come to be diagnosed owing to the effort of colonoscopist and the improvement of the scope. Particularly, the introduction of TV scopes into the field of colonoscopy has accelerate the trend.
早期结肠癌分为有蒂（带蒂）组和广基（无蒂）组。前者更常被诊断出来，尤其是在早期癌症（m癌）中。然而，广基组在内镜检查过程中可能被漏诊的可能性不能被忽视。进行结肠镜检查时应格外小心，以免漏诊小的广基病变。它们在直肠和右侧结肠中很常见。由于结肠镜检查医生的努力和内镜设备的改进，扁平或凹陷型早期癌症已能够被诊断出来。特别是，电视内镜引入结肠镜检查领域加速了这一趋势。
