Clinico-pathological Study of Rectal Cancer, Especially in Relation to the Results of Surgical Treatment

Extensions of current surgical approaches to rectal cancer have not satisfactorily improved the rate of survival. In order to refine prognostic factors for rectal cancer, 164 patients who underwent surgery for these 15 years were reviewed with the statistical techniques of multivariate analysis. Amputation of the rectum was performed in 118 patients and sphinctersaving operations were performed in 38 patients and in 8 patients the tumor was not resected. Mean age was 60.1 y.o. and 98 were male, 66 were female. The five-year-survival rate of the patients who had undergone curative resection for last 8 years was 62.4%, while for the past the rate was 45.1%. With the use of prognostic factors for rectal cancer, such as, depth of penetration, involvement of lymph node, lymphatic invasion, histological grade, proportion of intestinal circumference involved and location of the tumor. It was concluded that depth of penetration and involvement of lymph node were very important factors. The postoperative disturbances of genito-urinary functions were also investigated. The discriminant point divided the patients into two prognostic groups, and multidisciplinary treatment was made for the group of high risk factor of recurrence.