Hmm, I guess that I didn't explain myself very well. The reason that they just won't treat other lesions is that they might be healthy, just a simple cell change that will disappear or cause no harm. Doctor's just don't do that because trials and research have found them either unnecessary or harmful to the patient. Hospitals set up certain acceptable protocols for what can and can not be operated on based on the latest research. Doctors have to follow that.

I think that the biomarker test was done in case you needed it in the future. After 24+ years with my multifocal lung cancer, I'm still going strong with SBRT. I've never had immunotherapy.

Is this clearer for you?