How do you manage patients with early stage breast cancer with autoimmune disorders such as rheumatoid arthritis and collagen vascular disorders?

The historical perspective has been to treat in 180 cGy daily fractions to a total dose of 45 Gy with a tumor bed boost (assuming the need) to 50-55 Gy based on intrinsic increased radiosensitivity of normal and tumorous tissues. It is unclear whether this dose-fractionation schedule is effective be...