The Astanta rider also had testicular cancer which spread to his brain and after operations to remove the tumours as well as two months of chemotherapy, Armstrong was able to become a cancer survivor.
"We're all thinking about you, John." said Armstrong (pictured above) before Stage 10 of the Tour De France after hearing the news about the Welsh international.
Armstrong has set up the Livestrong Foundation and you can read more here
http://www.livestrong.com/lance-armstrong/