Skin - Nonmelanocytic tumors
Adnexal tumors - hair follicles

Author: Christopher Hale, M.D. (see Authors page)

Revised: 6 October 2016, last major update June 2012

Copyright: (c) 2002-2016,, Inc.

PubMed Search: Trichofolliculoma [title]

Cite this page: Trichofolliculoma. website. Accessed October 17th, 2018.
Clinical images

Images hosted on other servers:


Gross description
  • Solitary and nodular, may have multiple fine hairs protruding
Microscopic (histologic) description
  • Highly organoid hamartomatous lesions that recapitulate various phases of normal hair follicle
  • Have central dilated follicle surrounded by proliferating epithelium with various phases of follicle formation
  • Often Merkel cells present
Microscopic (histologic) images

Images hosted on PathOut server:

Courtesy of Mark R. Wick, M.D.

Images hosted on other servers:

Various images

Differential diagnosis
  • Dilated pore of Winer
  • Folliculosebaceous hamartoma
  • Nevus comedonicus
  • Pilar sheath acanthoma