2004 年 71 巻 4 号 p. 263-269
Five- and ten-year survival rates in patients who had transurethral resection for pT2aN0M0 muscle invasive transitional cell carcinoma of the bladder was studied with emphasis on the effect of adjuvant transarterial infusions of anticancer agents (TAI). A total of 17 patients out of 290 patients with bladder cancer who had initial treatment in our department between January 1991 and May 2001 were found to be pT2aN0M0 and were included in the present study. Fifteen patients received intravesical instillations of BCG after transurethral resection of the bladder tumor and 8 patients received TAI which was given two weeks after bacillus Calmette-Guerin therapy, with the exception of 1 patient. Five- and ten-year overall survival rates were 76.0% and 52.1%, respectively, and both five- and ten-year cancer-specific survival rates were 76.0% with an average follow up of 71 months. Significant prognostic factor associated with survival rates was only the infiltration pattern of the tumor cells between the alpha and beta group and gamma group (P=0.0420) in cancer-specific survival rates. The data support conservative management of transurethral resection followed by intravesical instillation of BCG and TAI in patients with pT2a bladder cancer.
