Adenoma malignum of the uterine cervix--an enigma.

Adenoma malignum is a rare variant of cervical adenocarcinoma which presents a great diagnostic and therapeutic challenge to an oncologist. A 31-year-old woman presented with a mass filling up whole of the vagina which showed no evidence of malignancy by scraping cytology or punch biopsy. But histological examination of the resected mass turned up to be adenoma malignum of the cervix. The patient was subsequently treated by Wertheim's hysterectomy and radiotherapy.