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PERIOSTEAL REACTION |
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infection: |
osteomyelitis cellulitis congenital syphilis |
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neoplastic: |
benign, eg. osteoid osteomamalignant (1° bone tumours, eg. osteosarcoma, Ewing's sarcoma)metastases [rarely cause periosteal reactions] |
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other: |
trauma polyarteritis nodosa Langerhans cell histiocytosis |
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bilateral and symmetrical periosteal reaction: |
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hypertrophic osteoarthropathy thyroid acropachy vascular insufficiency fluorosis [bones dense; ligamentous calcification common]pachydermoperiosteitis [rare, familial, painless, self-limiting; adolescent male] |
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