Wow Patty, you and I are in the same boat. I've been lurking for awhile and your post made me respond. My Mom also has Alzheimer's and Lung Cancer and it's really difficult to make decisions on how much to fight the lung cancer. Radiation was very successful and gave us a nice summer. We started Gemzar which she tolerates well except for the fatigue. I know we're fighting two horrid beasts but I've come to the conclusion that continuing to fight the cancer is most important.Although, others disagree with me, because they wonder about Mom's quality of life. I believe ones quality of life is ever changing. She laughs, is still witty and very loving. The AD doesn't hurt her, she is now at a stage where she is unaware she has it. Lung cancer will begin to hurt her. I want to keep her pain free as long as I can. I'm blessed my Mom is still an easy going person, but it's still a lot of work and I empathise with what you're going thru