There is no clear-cut answer. You have to look at each patient individually and each cancer individually.

It's like a three-dimensional microscope with little hands that I can move in any direction. I can see tremendously better, and its ability to tie knots in a bloodless field is incredible.

You are working in a hard area to get to, and it's tough to see.

Since I came to the White House, I got two hearing aids, a colon operation, skin cancer, a prostate operation, and I was shot. The damn thing is I've never felt better in my life.

The cancer was contained within the prostate and has been completely removed. We expect that his cancer is cured.

With a cancer patient, the person knows and is aware of a lot of the things going on. But in dementia patients, that is not the case.