Iam about to start chemotherapy on Monday the 16th of April.I have bladder cancer I also have COPD for which I need 16 hours a day on an oxygen machine.Iam now wondering that I should not have the radiotherapy as Iam not at all confident with this sort of treatment.Iam a male 69nyears old,my lungs are damaged but I have been able to live with COPD,can I refuse radiotherapy ?Thank you