Part 4 · Bones and Joints
Same concept, other depth: Clinical Reasoning →
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A 12‑year‑old girl has thigh pain, fever and a mild anaemia, suspected to be infection. Her X‑ray shows a permeative lesion in the middle of the femoral shaft with layers of periosteal new bone like an onion. MRI shows a large soft‑tissue mass. Biopsy: Ewing sarcoma. Fever and onion‑skin can mimic osteomyelitis.
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