Skin - Nonmelanocytic tumors
Other tumors of skin
Keloid

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

Revised: 5 October 2016, last major update September 2012

Copyright: (c) 2003-2016, PathologyOutlines.com, Inc.

PubMed search: Keloid [title] skin

Cite this page: Keloid. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/skintumornonmelanocytickeloid.html. Accessed December 3rd, 2016.
Definition / General
  • Abnormal fibroblast reaction to injury
  • Usually in people of African descent, often in earlobe
  • High rate of recurrence after excision
Treatment
  • Corticosteroid injection
Clinical Images
Images hosted on PathOut server:

Breast skin, courtesy of Dr. Mark R. Wick

Micro Description
  • Wide bands of collagen with large, brightly eosinophilic, glassy fibers
  • Also parallel fibroblasts and myofibroblasts
  • Mucinous pools after steroid injection
Micro Images
Images hosted on PathOut server:

Courtesy of Dr. Mark R. Wick

Molecular / Cytogenetics Description
Differential Diagnosis
  • Complication of acne
  • Hyperplastic scar
  • Keloidal dermatofibroma