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Benign bone tumors

Predominantly osseous tumors

Osteoid osteoma
- Pain is due to high levels of prostaglandins E2 produced by small tumor cells, thus it’s responsive to NSAIDs.
Osteoblastoma
- Pain is due to compression of large tumor to nerves, thus it’s not responsive to NSAIDs.
Osteoma

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All with “sarcoma”