Hopefully a biopsy was done

Arnold R. Oppenheim, MD answers: Cancer after superficial mole removal?

I had a non-cancerous mole removed by laser. The mole was quite deep so not all of the mole was removed. What happens if the little bit of mole left under the surface of the skin becomes cancerous after some years? Is it possible for  the cancer to go unnoticed? Will scar tissue from the laser removal some years earlier hide the cancer to me or the dermatologist?


Arnold R. Oppenheim, MD
7 months ago

 A laser which would rid you of a mole, by definition is ablative. This would mean that there would not be any tissue to send to the pathologist. 

    It is standard procedure to perform a small biopsy before the laser is used. You might check if that was done. Otherwise, the dermatologist must have been very confident that the mole was benign.

     This underscores the danger of  allowing lay people access to lasers unless they are under the direct supervision of a physician. 

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