title: Radiologic and pathologic analysis of solitary bone lesions. Part II: periosteal reactions.
abstract: The activated periosteum has a deceptive anatomic constancy amidst change. The change involves the production of matrix and, in the process, proliferation and expenditure of cells. When the demand for a reaction is excessive, nearby extraperiosteal soft tissue serves as a ready source for additional modulating cells, just as it does for fracture callus. The configuration of a periosteal reaction is an index of the nature and intensity of the inciting process.
mesh_terms: D001859:Bone Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000503:physiopathology; D001842:Bone and Bones / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D010521:Periosteum / Q000000981:diagnostic imaging* / Q000473:pathology / Q000503:physiopathology; D011859:Radiography