Expression of chorionic gonadotropin by schistosomiasis-associated squamous carcinomas of bladder.

Of 22 consecutive cases of squamous cell carcinomas of the urinary bladder, 4 expressed the beta subunit of human chorionic gonadotropin as demonstrated by immunohistochemistry. The significance of this finding is compared to similar observations made in urothelial carcinomas by others and its value as a possible marker in diagnosing and monitoring the progress of these tumors is discussed.