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Solitary enchondroma of the femur

Solitary enchondroma of the femur
Enchondroma of the distal femur demonstrates flocculent matrix resembling rings, or Cs and Os. Calcification is concentrated in the center of the lesion.
Reproduced with permission from: Daffner RH. Clinical Radiology: The Essentials, 3rd Edition. Philadelphia: Lippincott Williams & Wilkins, 2007. Copyright © 2007 Lippincott Williams & Wilkins.
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