- Periosteal reaction
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A periosteal reaction is the formation of newbone in response toinjury or other stimuli of theperiosteum surrounding thebone . It is most often identified onX-ray films of the bones.Etiology
A periosteal reaction can result from a large number of causes, including injury and chronic irritation due to a medical condition such as
hypertrophic osteopathy ,bone healing in response to fracture, chronic stress injuries, subperiostealhematoma s,osteomyelitis , andcancer of the bone. It may occur as part of thyroid acropachy, a severe sign of the autoimmune thyroid disorderGrave's disease .Diagnosis
The morphological appearance can be helpful in determining the cause of a periosteal reaction (for example, if other features of
periostitis are present), but is usually not enough to be definitive. Diagnosis can be helped by establishing if bone formation is localized to a specific point or generalized to a broad area. The appearance of the adjacent bone will give clues as to which of these is the most likely cause.ee also
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Hypertrophic pulmonary osteoarthropathy References
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