Prostatic biopsy in selected patients with carcinoma in situ of the bladder: preliminary report

Transitional cell carcinoma was found in biopsies of grossly normal-appearing prostates in 4 of 40 patients with recurrent carcinoma in situ of the bladder. In selected patients prostatic biopsy may be warranted if conservative therapy does not control the bladder tumors and if cystectomy is contemplated.