What are the histopathologic grades of conjunctival melanoma?

Updated: Feb 16, 2021
  • Author: Manolette R Roque, MD, MBA, FPAO; Chief Editor: Hampton Roy, Sr, MD  more...
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The histopathologic grade, as follows, represents the origin of the primary tumor:

  • GX - Origin cannot be assessed

  • G0 - Primary acquired melanosis

  • G1 - Malignant melanoma arises from a nevus

  • G2 - Malignant melanoma arises from a primary acquired melanosis

  • G3 - Malignant melanoma arises de novo

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