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Pathogenesis

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Epidermoid cysts are the result of growth of epidermal cells within the dermis. These cells lodge at this site as a consequence of three possible mechanisms:

  • occlusion of pilosebaceous follicles; the most frequent cause
  • penetrating injury resulting in implantation of epidermal cells into the dermis
  • trapping of epidermal cells along embryonal fusion planes

Plantar epidermoid cysts have been linked to human papilloma virus infection.

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