Intravesical CDDP therapy compared with combined CDDP and external radiation in noninvasive bladder cancer. Monitored...

Results of intravesical CDDP or CDDP combined with external beam radiation are compared in a group of 13 patients with low-stage bladder cancer. Six patients with low-stage bladder cancer received 4 or 12 treatments of CDDP intravesically with an initial complete response in 3 patients. Within six months, recurrent disease developed in 2 of 3 patients. Seven patients received the combination therapy of 400 rad (weekly for six weeks) followed two hours later with 50 mg of intravesical CDDP. A positive response was observed initially in all 7 patients as determined by pathology, PAP cytology, fluorescence cytology, and quantitative nuclear fluorescence determinations. Therapy was discontinued in 1 patient in each group because of irritative symptoms. The results indicate combination therapy is of tolerable toxicity, and quantitative fluorescence cytology is a useful adjuvant for guiding future treatments in patients with low- and high-grade bladder tumors.