My Mum has suspected lung cancer. She is already frail and has dementia. I’ve been told by the Dr. in the lung Dept. That the surgeons would rule out biopsy and surgery due to her age and fragility and he said the same reasons would be given by the oncologist for not doing chemo. He did mention that if we did want to know if it is cancer for sure then they could arrange a PET scan. If they are saying that they can do anything to treat the suspected cancer, would there be any point in having the PET scan? Would a confirmed diagnosis help with any future treatment e.g. pain meds.