skin cancer forming on skin injuries

Recently I have noticed when I gave Surgery to remove my skin cancer, or if I injure my skin the cut or surgery spot forms new cancer again.. Has anyone else been experiencing skin cancer growing from healing of small wounds. Is this possible. The image on my left arm was caused by a tree branch scratching my arm and this is what the healed injury looks like.

I have over 14 surgeries at Mayo Clinic in the last 5 months. Over 50% of the surgeries have led to more invasive surgery with same results.

Does skin cancer cells live dormant in my skin cells?