Skin - Nonmelanocytic tumors
Benign (nonmelanotic) epidermal tumors or tumor-like lesions
Cutaneous horn

Author: Hillary Elwood, M.D. (see Authors page)

Revised: 3 October 2016, last major update April 2015

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

PubMed Search: Cutaneous horn [title]

Cite this page: Cutaneous horn. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/skintumornonmelanocyticcutaneoushorn.html. Accessed December 7th, 2016.
Definition / General
Clinical Features
  • Usually solitary
  • Predilection for the head and neck and hands of older persons
  • Hard yellow to brown skin excrescence composed of compact keratin resembling a horn
  • Can be straight or curved and can measure up to several centimeters in length
Case Reports
Clinical Images

Images hosted on other servers:

Cutaneous horn

Firm to hard to the touch

Micro Description
  • Usually epidermal type keratin (with granular layer)
  • Occasionally has trichilemmal-like features (no granular layer but deep red granules) - termed trichilemmal horn
  • Examination of the base of the lesion is needed to determine the underlying etiology
  • Sometimes base contains epidermal hyperplasia without atypia
Micro Images

Images hosted on other servers:

Actinic keratosis with cutaneous horn

Low power

Verruca vulgaris