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Where Melanomas Start

  Most Melanomas Occur on the Skin



Mucous membranes - includes the mouth, nose, external eyes, and genital skin



Source of Melanomas on the Skin

Clear skin - includes under toenails and fingernails

Age spots (liver spots) - usually occur in people 70 or older


Where melanoma can start:

  • In a  new mole that develops in adulthood.

  • In a pre-existing mole.

A mole with hair growing from it:


  • Small hairy moles are no more likely to develop melanoma than a similar-sized mole without hair.


Likelihood of developing melanoma:

  • 1 in 3000 - The chance of melanoma developing from a normal mole.

  • 1 in 100 - The chance of melanoma developing from an atypical mole.