Donna, I'm not sure - I haven't heard the word Pancoast yet but I would assume so if this is the general term for these type tumors.
Ned, you hit the nail on the head in your reply.
That is exactly why he hasn't started chemo yet. I also wanted to mention that this morning before my parents went to his radiation appointment, he was having a hard time moving his feet, as in his brain wasn't able to tell his feet to move. They told his doctor this and they ordered an immediate brain scan, presumably to see if the cancer has gone to the brain. No results as of yet and I'm sure none of us will sleep tonight. He had a full body scan a few weeks back when it was discovered and came back with a clear brain scan at that time. I'm just praying it was something else. He's been dealing with awful blood pressure issues over the last year as well. He is no longer driving either because he had a short black out spell last week while driving! My mom has officially become his chauffeur.
His last radiation treatment is tomorrow and then gets a 2 week break, followed by a new scan and new treatment plan.
Anyway, I wanted to say thank you for the wonderful welcoming replies, words of wisdom and those links. I'll definitely be checking them out.