Pigmented odontogenic keratocyst : report of a rare case and review of the literature
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Rodrigues-Fernandes, Carla-Isabelly; Bonan, Paulo Rogério Ferreti; Carvalho, Elaine Judite de Amorim; Sánchez-Romero, Celeste; Almeida, Oslei Paes de; Perez, Danyel Elias da Cruz
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Aquest document és un/a article, creat/da en: 2018
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Pigmented odontogenic keratocyst (OKC) is very rare and its etiology remains uncertain. To the best of our knowledge, only 9 cases of pigmented OKC have been published in English-language literature. This report describes a pigmented OKC in a 14-year-old black male patient. Radiographically, the lesion appeared as a well-circumscribed, unilocular, and radiolucent image. A surgical excision was performed. Histopathological examination revealed an OKC. Additionally, a brownish, sparsed, intracytoplasmic pigmentation was observed in the basal cell layer, which was positive for Fontana-Masson staining. Immunohistochemistry reactions revealed positive dendritic cells for S-100 protein, HMB45 and Melan A. No clinical and imaging signs of recurrence were observed after 24 months. In conclusion, melanin apparently does not represent a factor for distinct biological behavior in OKC. |
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