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Updated: May 26, 2025

Spatial and Temporal Control of Murine Melanoma Initiation from Mutant Melanocyte Stem Cells
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Congenital Melanocytic Nevi.

Shelby Nathan1, John Smetona2, Sanjay Naran3

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|February 22, 2025
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Summary

Congenital melanocytic nevi are common skin growths present from birth. Management of large or giant nevi requires a team approach and may involve surgical excision or tissue expansion.

Keywords:
Congenital neviNevusPediatricsTissue expansion

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Area of Science:

  • Dermatology
  • Pediatric Surgery
  • Plastic Surgery

Background:

  • Congenital melanocytic nevi (CMNs) are benign neoplasms presenting at birth.
  • Clinical presentations and locations of CMNs vary widely.
  • Large or giant CMNs pose unique management challenges.

Purpose of the Study:

  • To provide an overview of the evaluation and management of large or giant congenital melanocytic nevi.
  • To highlight the importance of a multidisciplinary approach in managing complex cases.
  • To discuss surgical options, including tissue expansion, for extensive lesions.

Main Methods:

  • Review of current literature and clinical guidelines for congenital melanocytic nevi management.
  • Discussion of diagnostic considerations, including ruling out neurocutaneous melanosis.
  • Analysis of surgical techniques such as direct excision, serial excision, and tissue expansion.

Main Results:

  • Large and giant CMNs necessitate careful evaluation for comorbid conditions.
  • Multidisciplinary team involvement is crucial for optimal patient care.
  • Tissue expansion is a versatile technique for reconstructing defects after excision of complex CMNs.
  • Serial excision and long-term follow-up are often required for large or giant lesions.

Conclusions:

  • Effective management of large or giant congenital melanocytic nevi relies on a comprehensive, multidisciplinary strategy.
  • Surgical interventions should be tailored to the individual lesion and patient.
  • Long-term surveillance is essential following treatment for extensive CMNs.