Soft tissue
Extraskeletal bone tumors
Extraskeletal chondroma

Author: Vijay Shankar, M.D. (see Authors page)

Revised: 10 August 2016, last major update November 2012

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

PubMed Search: Extraskeletal chondroma

Cite this page: Extraskeletal chondroma. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/softtissueeskchondroma.html. Accessed October 17th, 2017.
Definition / general
  • Benign cartilaginous tumor, usually in adults in hands or feet; may recur locally
Case reports
Clinical images

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Thumb tumor

Foot tumor

Gross description
  • Lobulated, hyaline and calcified
Gross images

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Foot tumor

Microscopic (histologic) description
  • Lobulated on low power
  • Plump tumor cells with fine punctate calcification
  • Nuclear hyperchromasia common
  • May have focal fibrosis
  • May have osteoclast-like giant cells, histiocyte-like cells, vacuoles resembling lipoblasts
Microscopic (histologic) images

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Foot tumor

Cytology images

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Foot tumor

Differential diagnosis