Osteosarcoma
The radiographic findings in this 12 year old patient are compatible with osteosarcoma.
Osteosarcoma is the second most common primary bone tumor after multiple myeloma:
- primary osteosarcoma: typically occurs in young patients (10-20 years) with 75% occurring before the age of 20
- secondary osteosarcoma: occurs in the elderly, usually secondary to malignant degeneration of Paget disease, extensive bone infarcts or post-radiotherapy for other conditions
The most important differential considerations include :
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