Small cell & chemo
Why you can't use chemo?
Small cell lung cancer
is very responsive to chemo, which is the mainstay treatment in small cell lung cancer. So, you really need to know why chemo can't be used.
It is also sensitive to radiation, but the role of radiation is limited only for limited disease combined with chemo and only for palliative use (relieving pain) in advanced stage. D/w your oncologist in detail.