Parosteal bone lesions

Skip to end of metadata
Go to start of metadata

Non-tumor

  • Stress fracture
  • Fracture callus
  • Myositis ossificans

Benign

  • Osteochondroma
  • Periosteal chondroma

Malignant

  • Parosteal osteosarcoma
  • Periosteal osteosarcoma
  • Parosteal chondrosarcoma

Notes

  • Myositis ossificans is generally distinct from the cortex of the underlying bone. This may be best appreciated with cross-sectional imaging, such as CT.
  • In osteochondromas, the cortex of the exostosis blends with the cortex of the underlying bone; the marrow cavity of the lesion is continuous with the underlying bone marrow.
  • Parosteal osteosarcoma arises on the surface of the bone like a lump of plastacene.
  • Periosteal chondroma seems to arise within the cortex, erodes into the cortex, and expands outward into the soft tissues.
  • Periosteal osteosarcoma and chondrosarcoma generally have a soft tissue mass with matrix formation.

Other Differential Diagnoses by Anatomic Location

Unknown macro: {corr}
Unknown macro: {springerlink}
Unknown macro: {panel}

Internet resources validated by OrthopaedicWebLinks.com

Unknown macro: {cache}
Unknown macro: {report-on}
Error formatting macro: rss: java.lang.IllegalArgumentException: Invalid uri 'http://www.orthopaedicweblinks.com/cgi-bin/owl/search.cgi?query=%content:title > url encode%&xml_feed=1': Invalid query
Unknown macro: {panel-related}
Unknown macro: {rate}
Cite this page
Unknown macro: {div}

. *

Unknown macro: {page-info}

*. _

Unknown macro: {builder-spacetitle}

. _In: OrthopaedicsOne - The Orthopaedic Knowledge Network. Created

Unknown macro: {page-info}

. Last modified

Unknown macro: {page-info}

ver.

Unknown macro: {page-info}

. Retrieved

Unknown macro: {report-info}

, from

Unknown macro: {page-info}

.

Unknown macro: {builder-hide}
Page contributions
Unknown macro: {div}

The following individuals have contributed to this page:

Unknown macro: {contributors-summary}