Transitional cell carcinoma of the prostate.

Thirty-three cases of transitional cell carcinoma involving the prostate gland are reviewed. Four different types of involvement are described. The mortality of 66% was largely confined to those with primary prostatic transitional cell carcinoma and those in whom there was direct invasion of the prostate by a bladder tumour. The relationship of some of these lesions to urothelial carcinoma in situ is discussed.