Large brown macula in a newborn

Authors

  • Ana Gisela Santos Oliveira Department of Pediatrics, Unidade Local de Saúde de Viseu Dão-Lafões https://orcid.org/0000-0002-1350-1838
  • João Marques Department of Pediatrics, Unidade Local de Saúde de Viseu Dão-Lafões https://orcid.org/0000-0002-2845-3357
  • Joaquina Antunes Department of Pediatrics, Unidade Local de Saúde de Viseu Dão-Lafões https://orcid.org/0000-0002-7855-5933
  • Pedro Maneira Sousa Department of Pediatrics, Unidade Local de Saúde de Viseu Dão-Lafões https://orcid.org/0000-0001-7372-5916
  • Rita Cabral Department of Dermatology, Unidade Local de Saúde de Viseu Dão-Lafões
  • Isabel Andrade Department of Pediatrics, Unidade Local de Saúde de Viseu Dão-Lafões

DOI:

https://doi.org/10.25753/BirthGrowthMJ.v33.i3.29355

Keywords:

congenital melanocytic nevus, dermoscopy, newborn, risk for malignant transformation, skin lesion

Abstract

The authors report the case of a male term newborn born after an uneventful monitored pregnancy. On physical examination, he presented with a light brown hyperpigmented homogeneous macule >15 cm in size compatible with a giant congenital melanocytic nevus (CMN). The boy was discharged with indication for Neonatology and Dermatology follow-up. Since then, he has shown adequate psychomotor growth and development and unremarkable neurologic examination and cranioencephalic magnetic resonance imaging.
CMN is a benign proliferation of melanocytes forming theca/nests in the dermal-epidermal junction and/or dermis. It may be present at birth or develop during the first two years of life in any body area. CMN can be classified as small, medium, large, giant, or multiple. Giant CMN is rare and is a risk factor for melanoma.
Management of CMN should be based on age, nevus size, and other factors. Because of the potential for malignancy, giant CMN requires clinical surveillance with neurodevelopmental monitoring and regular dermoscopy, as well as early surgical management of suspicious lesions.

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References

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Published

2024-10-22

How to Cite

1.
Santos Oliveira AG, Marques J, Antunes J, Maneira Sousa P, Cabral R, Andrade I. Large brown macula in a newborn. BGMJ [Internet]. 2024 Oct. 22 [cited 2025 Dec. 10];33(3):213-5. Available from: https://revistas.rcaap.pt/bgmj/article/view/29355

Issue

Vol. 33 No. 3 (2024)

Section

Image Cases

License

Copyright (c) 2024 Ana Gisela Santos Oliveira, João Marques, Joaquina Antunes, Pedro Maneira Sousa, Rita Cabral, Isabel Andrade

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