Both uterine cancer and benign gynecological disorders can result in women being treated with radiation to the pelvic area. DCEG has sought to understand the risks associated with this pelvic radiation by studying these populations for cancer mortality. A cohort of 10,000 women treated with radiation for benign gynecological disorders as well as 3,200 women treated with surgery was studied for 30 years. Mortality from malignancies in the heavily irradiated organs remained elevated up to 40 years. Researchers also found a significantly elevated mortality rate due to non chronic lymphocytic leukemia among the population but that increased risk was not associated with radiation dose.