| [ Summary ] |
To clarify the histopathological characteristics of lower rectal cancer (Rb cancer), 91 cases with submucosal invasive carcinomas and 150 cases with advanced carcinomas were examined. With submucosal invasive carcinomas, tumor budding/sprouting in rectal carcinomas is more frequent than in carcinomas occurring in the cecum or colon. However, in this regard, there are no difference between upper rectal cancer and lower rectal cancer. In cases involving advanced cancer, there are no differences between the frequency of rectal cancer or colon cancer. |