The risk of cutaneous melanoma in melanocytic nevi Risco de melanoma cutâneo nos nevos melanocíticos

• Main Author: Nurimar Conceição Fernandes
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Dermatologia 2013-04-01
• Series: Anais Brasileiros de Dermatologia
• Subjects: Epidemiologia; Estudos prospectivos; Melanoma; Nevo pigmentado; Patologia; Epidemiology; Nevus, pigmented; Pathology; Prospective studies
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0365-05962013000200314
• ISSN: 0365-0596; 1806-4841

The data on melanoma associaed with melanocytic nevus are controversial. A longitudinal prospective study of 107 cases of cutaneous melanoma revealed that 9 (8.4%) cases were presumed to be linked to a precursor lesion, but only in 1 (0.9%) out of these cases the histopathological examination showed an associated melanocytic nevus. The vague information of a preexisting lesion of cutaneous melanoma is not sufficient to consider it a tumour precursor and it requires histopathological evidence to confirm the diagnosis.<br>Os dados sobre risco de melanoma cut&#226;neo nos nevos melanoc&#237;ticos s&#227;o ainda controversos. O estudo longitudinal prospectivo de 107 casos de melanoma cut&#226;neo revelou que em 9/107 casos (8,4%) houve presun&#231;&#227;o de les&#227;o precursora, por&#233;m em 1/107 caso (0,9%) houve comprova&#231;&#227;o histopatol&#243;gica para nevo melanoc&#237;tico. A informa&#231;&#227;o vaga de presen&#231;a de les&#227;o precursora do melanoma cut&#226;neo torna vulner&#225;vel sua vincula&#231;&#227;o com o tumor e implica em comprova&#231;&#227;o histopatol&#243;gica.