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Developmental defects in which dermatoscopy may be useful mainly include median raphe cyst (MRC) and aplasia cutis congenita (ACC). Dermatoscopy of MRC shows the presence of a homogeneous, white/yellowish pattern. Moreover, by revealing a translucent tract between two cysts, it may highlight the presence of a clinically undetected connection so to address to the final diagnosis of median raphe canal. Dermatoscopy of the classic, solitary ACC of the scalp reveals a central area of scarring alopecia with no follicular openings and some telangiectatic vessels. At the hair-bearing margin, horizontally and radially oriented hair bulbs are generally visible through a semitranslucent epidermis, configuring a starburst hair follicle pattern.

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Developmental Defects

  • 章节

  • 发表日期：

    2025年

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  • Giuseppe Micali,
  • Anna Elisa Verzì,
  • Alice Amato,
  • Francesco Lacarrubba

摘要

Developmental defects in which dermatoscopy may be useful mainly include median raphe cyst (MRC) and aplasia cutis congenita (ACC). Dermatoscopy of MRC shows the presence of a homogeneous, white/yellowish pattern. Moreover, by revealing a translucent tract between two cysts, it may highlight the presence of a clinically undetected connection so to address to the final diagnosis of median raphe canal. Dermatoscopy of the classic, solitary ACC of the scalp reveals a central area of scarring alopecia with no follicular openings and some telangiectatic vessels. At the hair-bearing margin, horizontally and radially oriented hair bulbs are generally visible through a semitranslucent epidermis, configuring a starburst hair follicle pattern.