Ewing sarcoma - fibula
Diagnosis certain
Updates to Case Attributes
Body
was changed:
Pathologically proven Ewing sarcoma.
Ewing sarcoma is an aggressive bone tumour observed in the first two decades of life. Second most common malignant bone tumor in children, presenting a higher prevalence in boys than in girls (3:1 ratio).
The typical clinical presentation includes:
- Pain and swelling at the site of the tumour. Pain often referred to the adjacent joint.
- Patients may present with nonspecific symptoms such as fever, increased erythrocyte sedimentation rate, and leukocytosis, or with weight loss and anaemia.
Radiographic findings:
Mainly located near the metaphysis/diaphysis of long bones. Less often in flat bones or vertebral bodies.
Usually osteolytic lesions (motheaten, or permeative) with a soft-tissue component.
Periosteal reactions are common:
- Spiculation (periosteal new bone formation radiating into the soft tissues)
- Onionskin periosteal ossification.
- Codman triangle: elevated ossified periosteum at the margin of the subperiosteal tumour.
- "Sunburst
"appearance" appearance
On imaging, the main differential diagnosis is osteosarcoma.
-<li><a href="/articles/sunburst-appearance-bone-1">"Sunburst "appearance</a></li>- +<li><a href="/articles/sunburst-appearance-bone-1">"Sunburst" appearance</a></li>