Bilateral radical radiotherapy in a patient with uterus didelphys

We report a case of congenital abnormality of uterus didelyphys in a patien t who developed invasive carcinoma of the cervix. She received radical radi otherapy by a combination of external beam pelvic radiotherapy and high dos e rate brachytherapy by insertion of afterloading catheters into both uteri ne canals. A newly defined prescription point was used midway between the t wo catheters and 2 cm above the mean cervical os position. The classical po int A was regarded as inappropriate in this patient with a rare condition. Acute toxicity was minor and the patient is tumour free with no significant normal tissue late effects after follow-up of nearly 3 years.