Sandbox: Bone DDx: Difference between revisions

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* 20 yo patients
* 10-30 yo patients
* Painless, slowly growing mass
* Asymptomatic
* Pathological fracture




* Lytic bone lesions with geographic pattern of bone destruction on X ray
* Located in the medullary cavity at the metaphyseal region
* Located at metaphysis of long bones
* Small lytic lesions, sharply defined scalloped margin, and narrow zone of transition
* Narrow zone of transition
* Expansion of the overlying cortex
* Non-sclerotic margins
* Rings and arcs of calcifications
* Internal pseudotrabeculation
* No periosteal reaction
 
 
* Mature, bland fibroblasts
* Little cellularity, no pleomorphism
* Abundant collagenous stroma
* Thin walled, dilated vascular channels

Revision as of 12:54, 24 November 2015

  • 10-30 yo patients
  • Asymptomatic
  • Pathological fracture


  • Located in the medullary cavity at the metaphyseal region
  • Small lytic lesions, sharply defined scalloped margin, and narrow zone of transition
  • Expansion of the overlying cortex
  • Rings and arcs of calcifications
  • No periosteal reaction
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