At MEGADETH’s recent show at London’s SSE Arena Wembley, Mustaine told the crowd: “About a year ago, we were working on our new album back in Franklin, Tennessee, and I started to feel some pain. I went to the doctor and he said, ‘Dave, you have cancer.’ And I went, ‘Fuck! I have cancer.’ And I was so shocked. At first, I thought, ‘Am I afraid?’ And then I said, ‘No. I’m fucking pissed.’ We stopped the record – we stopped everything. I went into treatment for cancer.
It was 51 radiation treatments and nine chemo treatments and when it was all said and done, every day I would think, ‘I can’t face not playing again,’ so I would pray. I know a lot of you guys know that I pray. I say that in Peace Sells. I pray every day. I say that in the song. I’ve said it since the second record.But I thought about you guys every day, too. And I thought about my family. And I got this power from you guys. And I just kept thinking about it. And on October 16, I went to go see the doctor, and he said, ‘You’re 100% free of cancer.”