Higher doses of radiation combined with chemotherapy improve survival in patients with stage III lung cancer, a new study by researchers at the University of Michigan Comprehensive Cancer Center. Standard treatment for this stage of lung cancer -- when the tumor is likely too large to be removed through surgery -- involves a combination of radiation therapy with chemotherapy. But, this new study finds, giving chemotherapy at the same time as the radiation enhances the effect of both. Further, increasing the dose of radiation over the course of treatment also increased survival.