[Detection of a prostatic adenocarcinoma in the cysto-prostatectomy specimens of an invasive tumor of the bladder].

Among one hundred consecutive patients submitted to radical cysto-prostatectomy for invasive transitional cell carcinoma of the bladder, 26 also exhibited adenocarcinoma of the prostate on histological specimens: 17 microscopic foci and 9 larger prostate carcinomas. In 3 cases, the tumor was found in the apex of the prostate gland. Pelvic lymphadenectomy was positive in 4 cases but always corresponded to a urothelial metastasis. Follow-up was never marked by a metastatic development of this adenocarcinoma. This frequency of latent prostatic adenocarcinoma is not different from its observed incidence in the general population on autopsy studies. The high incidence of this association makes removal of the whole prostatic tissue during total cystectomy necessary.