My mother has been diagnosed with Stage 3A lung cancer. She has had COPD for 7 years.?She currently uses oxygen at night.  Her oncologist has redemmonced radiation and chemo.  He also told her that if she did not do the treatments she would live 6 months and the lung cancer itself would become pretty brutal — worse than the effects of the radiation and chemo.  Is this true?  I know her prognosis is not good even with the treatment.  My main concern is about her quality of life.  Would it be better or worse without the chemo & radiation?