Christine J. Ko, MD

Low-magnification view of a trichoadenoma shows a dome-shaped lesion based in the dermis. Note numerous mature horn cysts image. There is focal granulomatous inflammation surrounding the keratin debris image.

High magnification view of a trichoadenoma highlights the sclerotic stroma and the loose keratin debris within the horn cysts image. There are basaloid buds off of horn cysts image and in the stroma image.



  • Trichoadenoma of Nikolowski


  • Benign follicular tumor

  • Predominance of mature folliculocystic structures in dermis

  • Epithelial tubules and cords interspersed

  • Sclerotic stroma

Jul 8, 2016 | Posted by in PATHOLOGY & LABORATORY MEDICINE | Comments Off on Trichoadenoma

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