My fathers heart is at 13 percent. He is insulin dependant diabetic, and just recently had to call the ambulance I thought his difficulty breathing may have been because he was filling with fluid however Hus lung collapsed and when more tests were ran a tumor was found. What are the risks of chemo and radiation in a situation like this?
Thanks for your question on Chat Doctor. Your father is high risk patient as his heart is only 13 % working, and he is diabetic.  So surgery for any cancer will be extremely risky. In my opinion you should first get done PET SCAN to stag his malignancy.  Treatment of any cancer is based on staging.  So if stage 4 cancer is found which is more likely in his case, than palliative chemotherapy should be given. No harm in this with diabetes or low cardiac function. So palliative chemotherapy should be started.