Skin nonmelanocytic tumor

Fibrous, fibrohistiocytic and myofibroblastic neoplasms


Last author update: 1 September 2012
Last staff update: 13 March 2023 (update in progress)

Copyright: 2003-2023,, Inc.

PubMed search: Keloid [title] skin

Christopher S. Hale, M.D.
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Cite this page: Hale CS. Keloid. website. Accessed March 26th, 2023.
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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