Câmara de Oliveira Marina, Barcaui Carlos Baptista, Barcaui Elisa de Oliveira, Piñeiro-Maceira Juan
Dermatology Service, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
Dermatology Service, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
An Bras Dermatol. 2020 Mar-Apr;95(2):217-220. doi: 10.1016/j.abd.2019.03.009. Epub 2020 Feb 12.
Melanonychia is the change in the coloration of the nail plate resulting from the deposition of melanin. Among its causes are melanocytic hyperplasia, melanocytic activation and nail melanoma. Subungual follicular inclusions are histological findings of unknown etiology, possibly related to trauma. We present three cases of melanonychia of different etiologies with subungual follicular inclusions, an association that has not been well described and with an indefinite pathogenesis.
甲下黑素沉着是指由于黑色素沉积导致甲板颜色改变。其病因包括黑素细胞增生、黑素细胞活化和甲下黑色素瘤。甲下毛囊性包涵体是病因不明的组织学表现，可能与外伤有关。我们报告三例不同病因的甲下黑素沉着合并甲下毛囊性包涵体病例，这种关联尚未得到充分描述，发病机制尚不明确。
