Ribeiro Camila Sampaio, Serpa Sergio S, Sousa Maria Auxiliadora Jeunon, Jeunon Thiago
Hospital Federal de Bonsucesso - Rio de Janeiro (RJ), Brazil.
Universidade Estácio de Sá - Rio de Janeiro (RJ), Brazil.
An Bras Dermatol. 2016 Jul-Aug;91(4):514-6. doi: 10.1590/abd1806-4841.20164248.
Melanomas can arise either de novo (70%) or from pre-existing melanocytic lesions (30%). Of the latter, most cases arise at the dermoepidermal junction from small congenital or acquired non-blue nevi while only a few arise from blue nevi, notably the cellular subtype and less commonly the common (dendritic) type. Melanomas that arise from blue nevi usually occur on the scalp with greater frequency, as in the case described. Although previous studies have discussed melanoma arising from giant congenital blue nevi, few have discussed those arising from intermediate blue nevi. We present a case of a 52-yearold man with melanoma on the scalp evolving from an intermediate congenital common blue nevus.
黑色素瘤可原发产生（70%），也可由先前存在的黑素细胞病变发展而来（30%）。在后者中，大多数病例起源于真皮表皮交界处的小先天性或后天性非蓝色痣，而只有少数起源于蓝色痣，特别是细胞亚型，常见（树枝状）型则较少见。起源于蓝色痣的黑色素瘤通常更频繁地发生在头皮上，如所述病例。尽管先前的研究讨论了起源于巨大先天性蓝色痣的黑色素瘤，但很少有研究讨论起源于中等大小蓝色痣的黑色素瘤。我们报告一例52岁男性头皮黑色素瘤，其由中等大小先天性普通蓝色痣演变而来。
