@supportfordad, Welcome to Mayo Connect. I have to agree with the others, it's too soon to speculate on a prognosis. We don't know how he will respond to treatment, and everyone is different. Use only trusted sources if you are searching the internet. Try to focus on what you can do to help him. You may need to let your dad know that you have additional questions related to the treatment plan, and side effects. Ask him if it's ok to talk those through at his next oncology appointment with your dad in the room. If your dad objects to talking about prognosis, then respect that decision. Some people are never ready for that conversation. It is often helpful for the caregiver to be able to ask questions focused on treatment and side-effects. It's an overwhelming time for both of you, he may appreciate someone else jumping in and asking those questions. Does he seem open to letting you help him navigate this new world?
I was diagnosed 4 years ago. My first symptoms were related to enlarged hilar lymph nodes. Is he experiencing and/or managing symptoms related to the lymph nodes?