Title: Giant Congenital Melanocytic Nevus: A Case Report

Authors: Shikha Verma, Ravinder Singh

 DOI: https://dx.doi.org/10.18535/jmscr/v8i6.44

Abstract

Giant congenital melanocytic nevus (GCMN) is a very rare condition with an estimated incidence of between 1/20,000 and1/500,000 birth, characterized by a large brown to black skin lesions. It is caused due to genetic mutations which lead to defective proliferation/differentiation/migration of melanoblasts. The risk of transformation of GCMN to malignant melanoma varies between 0 and 3.8%. Besides malignant transformation, patients with GCMN need to be periodically assessed for neurological abnormalities and psychosocial impairment. Here we present a case of 24 years adult who presented with a progressively extensive brownish-black skin lesion of approximately 40 cm over his back. In view of the potential severe complications as well as psychological trauma we draw clinicians’ attention for a timely diagnosis and management.

References

  1. Schaffer JV, Bolognia JL. The clinical spectrum of pigmented lesions. ClinP last Surg 2000;27:391‑408
  2. Etchevers HC: Hiding in plain sight: molecular genetics applied to giant congenital melanocytic nevi. J Invest Dermatol 2014;134:879–882
  3. Viana ACL, Gontijo B, Bittencourt FV. Giant congenital melanocytic nevus. An Bras Dermatol. 2013;88(6):863–78.
  4. Grichnik JM, Rhodes AR, Sober AJ. Benign neoplasias and hyperplasias of melanocytes. In: Wolff K, Goldsmith LA, Katz SI, Gilchrest BA, Paller AS, LefelDJ, editors. Fitzpatrick’s Dermatology in General Medicine. 7th ed. New York: McGraw-Hill; 2008. p. 1099–122.
  5. Kincannon J, Boutzale C. The physiology of pigmented nevi. Pediatrics.1999;104:1042-5.
  6. Marghoob AA, Bittencourt FV, Kopf AW, Bart RS. Large congenital melanocytic
    Curr Probl Dermatol. 2000;12:146-52
  7. Rhodes AR. Melanocytic precursors of cutaneous melanoma. Estimatedrisks and guidelines for management. Med Clin N Am 1986;70:33‑7.
  8. Slutsky JB, Barr JM, Femia AN, Marghoob AA. Large congenital melanocytic nevi: associated risks and management considerations. Semin Cutan Med Surg 2010; 29:79-84.
  9. Malik G, Singh A, Singh K, Pannu MS, Singh P, Jain R. Giant congenital melanocytic nevus: A case report. International Journal of Basic and Applied Medical Sciences 2015;5:138‑40.
  10. Kovalyshyn I, Braun R, Marghoob A. Congenital melanocytic naevi. Australas J Dermatol. 2009;50:231-40.
  11. Arneja J, Gosain A. Giant congenital melanocytic nevi. Plast Reconstr Surg. 2009; 124:1e-13e.

Corresponding Author

Ravinder Singh

Medical Officer, Dermatology DR RKGMC Hamirpur H.P India