Case report: possible diagnostic error: the use of urinary human chorionic gonadotropin tests to differentiate testicular tumor from inflammatory lesions within the scrotum.

A case of a probable falsely positive urinary human chorionic gonadotropin (pregnancy screening) test is reported in association with chronic epididymitis in a patient with a single testis. The urinary human chorionic gonadotropin test was used in an asymptomatic patient to attempt to differentiate a firm mass that was associated intimately with the lower pole of the testis and obliterated the lower pole of the epididymis. The use of currently available tests for human chorionic gonadotropin in the male subject is discussed.