Bladder cancer following low or high dose pelvic irradiation.

Eleven women presenting to this department since 1971 with bladder cancer have had previous pelvic irradiation. The tumours were generally of high grade and advanced T-category. Prognosis was poor and only 32% survived for one year. The interval observed between low dose pelvic irradiation and subsequent bladder cancer was longer than after high dose pelvic irradiation (mean interval of 30 years compared with 16.5 years).