Skin nonmelanocytic tumor
Fibrous, fibrohistiocytic and myofibroblastic neoplasms

Topic Completed: 1 September 2012

Minor changes: 21 October 2020

Copyright: 2003-2021,, Inc.

PubMed search: Keloid [title] skin

Christopher S. Hale, M.D.
Page views in 2020: 8,606
Page views in 2021 to date: 796
Cite this page: Hale CS. Keloid. website. Accessed January 24th, 2021.
Definition / general
  • Abnormal fibroblast reaction to injury
  • Usually in people of African descent, often in earlobe
  • High rate of recurrence after excision
  • Corticosteroid injection
Clinical images

Contributed by Mark R. Wick, M.D.
Breast skin

Breast skin

Microscopic (histologic) description
  • Wide bands of collagen with large, brightly eosinophilic, glassy fibers
  • Also parallel fibroblasts and myofibroblasts
  • Mucinous pools after steroid injection
Microscopic (histologic) images

Contributed by Mark R. Wick, M.D.
Molecular / cytogenetics description
Differential diagnosis
  • Complication of acne
  • Hyperplastic scar
  • Keloidal dermatofibroma
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