Skene's gland adenocarcinoma resembling prostatic adenocarcinoma

An 88-year-old woman presented with gross hematuria and a 3-cm periurethral mass. Biopsy revealed an adenocarcinoma resembling prostatic adenocarcinoma; the tumor cells were positive for keratin and prostate-specific antigen. The serum level of prostate-specific antigen was elevated; the carcinoembryonic antigen and CA-125 serum levels were normal. One year after external beam radiotherapy, the patient is without evidence of disease. This is the sixth case of a urethral prostatic-type adenocarcinoma, tumors that are most likely of Skene's gland origin.