I have some bad news and some really bad news to share?!

A man visits the doctor for a checkup, and after some tests, the doctor comes in with a grave look on his face. 

Doctor: Well, I have some bad news and some really bad news. 


Man: Well, give me the really bad news first. 

Doctor: You have cancer, and only 6 months to live. 

Man: And the bad news? 

Doctor: You have Alzheimer's disease. 

Man: That's great. I was afraid I had cancer!