I just watched the segment on Malignant Melanoma.  I had this at 18.  In my photos you can see how extensive the damage was.  They removed a good portion of my back.  They gave me two years to live.  I had no muscles to even hold my head up for a while.  35 years later, I had lung cancer.  I beat both.

My Melanoma was from the sun as I am very fair skinned.