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Subungual lentigo presents as a dark brown to black longitudinal band on a single fingernail or toenail [1]. It is a benign melanonychia subtype. On histopathology, there is melanocyte proliferation in the basal layer of the epidermis without nest formation [1, 2].

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Lentigo

  • 章节

  • 发表日期：

    2025年

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  • Eden Axler,
  • Shari R. Lipner

摘要

Subungual lentigo presents as a dark brown to black longitudinal band on a single fingernail or toenail [1]. It is a benign melanonychia subtype. On histopathology, there is melanocyte proliferation in the basal layer of the epidermis without nest formation [1, 2].