periosteal reaction

Periosteal reaction
-A periosteal reaction is a non-specific reaction and will occur whenever the periosteum is irritated by a malignant tumor, benign tumor, infection or trauma.
-There are two patterns of periosteal reaction: a benign and an aggressive type.
-The benign type is seen in benign lesions such as benign tumors and following trauma.
-An aggressive type is seen in malignant tumors, but also in benign lesions with aggressive behavior, such as infections and eosinophilic granuloma.


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