Inverted follicular keratosis

Last Updated: 2023-07-07

Author(s): Anzengruber F., Navarini A.

ICD11: 2F21.Y

  • Trichilemmoma
  • Trichoblastoma
  • Desmoplastic trichoepithelioma
  • Trichoepithelioma
  • Basal cell carcinoma (incl. subtypes)

Good hair follicle tumour.

Mostly solitary, skin-coloured, slightly hyperkeratotic nodule.

Clinic

Biopsy

Face, torso.

  1. Roth LM (2000) Inverted follicular keratosis of the vulvar skin: a lesion that can be confused with squamous cell carcinoma. Int J Gynecol Pathol 19: 369-373 
  2. Mehregan AH (1964) Inverted follicular Keratosis. Arch Dermatol. 89: 229–235