Doctors cut tumors out of Leisa Dargis’ brain and spine seven months ago, left one in her lung and told her to enjoy the rest of her life.

Whatever she had left.

Dargis was diagnosed Aug. 25 with stage 4, metastic lung cancer.

In laymen’s terms, that’s bad.

The cancer had spread through her body. Cutting out the last tumor would mean a 12-month recovery, and she only had 18 months to live, Dargis said the doctors told her.

Dargis cut a deal with her doctor: If she was cancer-free in six months, he would cut out that last tumor.

The Cyberknife procedure is scheduled for March 31.

So what killed her cancer?