Isaac Young's parents could not believe a small lump on their young son's leg was melanoma.
The resulting biopsies, surgeries and skin graft are more than any child should have to endure.
But the brave Lower Hutt 11-year-old has taken his brush with the killer disease in his stride and, with his father, Paul, next week will push his body to the limit to try to raise money for and awareness of the skin cancer.
Paul will participate in the Ironman New Zealand race in Taupo, and Isaac will line up in the Ironkids event. A week out from the big day they had already raised $1285 for the Melanoma Foundation, which is holding its Melanoma March awareness month.