title: [The essence of osteoid osteomas and osteoblastomas].
abstract: 178 cases of osteoid osteomas and osteoblastomas collected during 35 years were studied morphologically and roentgenologically (angiography--28 cases). Clear-cut differences between these two lesions were revealed. The differences concerned: 1) the character of the border with the surrounding bone tissue; 2) the morphology of bone structures being chaotic in the osteoblastoma; 3) intensity of proliferation in the osteogenic tissue; 4) differences in the angiographic data. According to the author's opinion osteoblastoma is a blastomogenic process with destructive growth and intensive proliferation. Classical osteoid osteoma does not possess these properties and is the result of dysontogenetic development of the intraosseous vascular system.
authors.forename: G I
authors.initials: GI
authors.lastname: Lavrishcheva
mesh_terms: D001859:Bone Neoplasms / Q000145:classification / Q000209:etiology / Q000473:pathology*; D001842:Bone and Bones / Q000473:pathology; D006801:Humans; D010017:Osteoma, Osteoid / Q000145:classification / Q000209:etiology / Q000473:pathology*
vernacular_title: O sushchnosti osteoidnykh osteom i osteoblastom.