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Large congenital melanocytic nevus

Disease definition

A large, or giant, congenital melanocytic nevus (LCMN or GCMN) is a pigmented skin lesion of more than 20 cm - or 40 cm- respectively, projected adult diameter, composed of melanocytes, and presenting with an elevated risk of malignant transformation.

ORPHA:626

  • Synonym(s):
    • Congenital pigmented nevus
    • GMN
    • Giant congenital melanocytic nevus
    • Giant pigmented hairy nevus
    • LCMN
  • Prevalence: 1-9 / 100 000
  • Inheritance: -
  • Age of onset: Infancy, Neonatal
  • ICD-10: Q82.5
  • OMIM: 137550
  • UMLS: C1318558  C1842036
  • MeSH: -
  • GARD: 2469
  • MedDRA: 10072036

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