Congenital giant melanocytic nevus. A case report

Abstract

Introduction: Congenital giant melanocytic nevus are infrequent; their incidence is one for every 20 000 to 50 000 live births. They are lesions that tend to change during childhood, associated with complications such as melanoma or neurocutaneous melanosis. They often provoke a significant psychological commitment to parents both for their aesthetics and for their malignancy potential. Case report: newborn male, white, product of transvaginal delivery, from non-blood parents with no history of birth defects. Physical examination of the skin showed the presence of black pigmented lesions that covered most of the right gluteus, with a potentially heterogeneous and hairy consistency. These lesions were clinically diagnosed as giant congenital melanocytic nevi, without other associated malformations or neurological damage. The patient was discharged with a follow-up by dermatology, genetics and pediatrics. Conclusions: When dealing with a giant congenital melanocytic nevus, it is necessary to assess the existence of neurocutaneous melanosis or associated malformations. Prenatal diagnosis and genetic counseling, as well as regular check-ups for the risk of malignancy in melanoma, form the basis of treatment.

Keywords

• nevo
• nevo pigmentado
• melanoma
• dermatología