Primary adenocarcinoma of the female urethra.

Three cases of primary adenocarcinoma of the female urethra are presented. The tumour in the first case was associated with urethritis glandularis and is thought to arise from previous glandular metaplasia of the urethral mucosa. The tumour in the second case resembled the clear-cell carcinomas of the lower female genital tract and is thought to be of embryonic rest origin. The tumour in the third case is thought to arise from the paraurethral glands.