Nevus Azul

CASE REPORT Extensive intraoral blue nevus - Case report
Extenso nevo azul intraoral - Relato de caso
Thiago de Santana Santos1 Paulo Ricardo Saquete Martins-Filho3 Ronaldo de Carvalho Raimundo5 Riedel Frota2 Josuel Raimundo Cavalcante4 Emanuel Sávio de Souza Andrade6

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Abstract: Nevus is a congenital pigmented malformation rarely found in the oral mucosa. Around one third of caseslocated in this anatomical region are of the blue type, a histological variant with considerable tendency to malignancy. This study reports the case of a male patient, chronic smoker, with a blue nevus measuring 5cm in diameter on the hard palate. Since controversy exists in the literature regarding the incisional biopsy of pigmented lesions with malignant or malignant potential, excision withoutprevious biopsy of the lesion was the therapy of choice for this case. The patient was followed-up for two years with no sign of recurrence or malignant transformation. Keywords: Melanins; Nevus, blue; Palate Resumo: O nevo é uma má-formação congênita pigmentada, raramente encontrado na mucosa bucal. Cerca de 1/3 dos casos localizados nesta região anatômica são do tipo azul, uma variante histológicacom considerável tendência à malignização. Este artigo relata o caso de um paciente do sexo masculino, tabagista crônico, portador de um nevo azul de 5 cm de diâmetro no palato duro. A excisão da lesão sem biópsia prévia foi a conduta terapêutica de eleição para o caso, uma vez que ainda existe controvérsia na literatura a respeito da realização de biópsia incisional em lesões pigmentadas malignasou com potencial de malignização. O paciente foi acompanhado por um período de 2 anos, sem sinais de recorrência ou transformação maligna. Palavras-chave: Melaninas; Nevo azul; Palato

INTRODUCTION Nevus is a congenital pigmented malformation commonly encountered in skin. Depending on the location of the nevus cells, the malformation is classified histologically as intradermal, junctional,compound and blue, with the latter presenting a considerable tendency to malignancy. Normally found on the

Received on 05.01.2011. Approved by the Advisory Board and accepted for publication on 12.03.2011. * Study undertaken at: Oswaldo Cruz University Hospital, University of Pernambuco (HUOC-UPE), Recife (PE), Brazil. Conflict of interest: None / Conflito de interesse: Nenhum Financial funding: None/ Suporte financeiro: Nenhum
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Master in Bucco-Maxillofacial Surgery and Traumatology, Pernambuco Faculty of Dentistry, University of Pernambuco (FOP-UPE); Doctoral Student in BuccoMaxillofacial Surgery and Traumatology, Ribeirão Preto Faculty of Dentistry, University of São Paulo (FORP - USP), São Paulo (SP), Brazil. Doctor of Bucco-Maxillofacial Surgery andTraumatology, Pernambuco Faculty of Dentistry, University of Pernambuco (FOP-UPE); Preceptor, Residency Program in Bucco-Maxillofacial Surgery and Traumatology, Oswaldo Cruz University Hospital, University of Pernambuco (HUOC-UPE), Recife (PE), Brazil. Master in Health Sciences awarded by the Post-Graduate Medicine Nucleus, Federal University of Sergipe (NPGME-UFS); Doctoral Student in Health Sciences atthe Post-Graduate Medicine Nucleus, Federal University of Sergipe (NPGME-UFS), São Cristóvão (SE), Brazil. Doctor of Bucco-Maxillofacial Surgery and Traumatology, Pernambuco Faculty of Dentistry, University of Pernambuco (FOP-UPE); Professor of BuccoMaxillofacial Surgery and Traumatology, State University of Paraiba (UEPB), Campina Grande (PB), Brazil. Doctor of Bucco-Maxillofacial Surgery andTraumatology, Pernambuco Faculty of Dentistry, University of Pernambuco (FOP-UPE); Professor of Stomatology, Pernambuco Faculty of Dentistry, University of Pernambuco (FOP-UPE), Recife (PE), Brazil. PhD in Oral Pathology, Federal University of Rio Grande do Norte (UFRN); Professor of Oral Pathology, Pernambuco Faculty of Dentistry, University of Pernambuco (FOP-UPE), Recife (PE), Brazil.

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