title: [Osteosarcoma arising in preexisting pathological tissues].
mesh_terms: D001859:Bone Neoplasms / Q000209:etiology*; D002471:Cell Transformation, Neoplastic / Q000473:pathology; D005357:Fibrous Dysplasia of Bone / Q000473:pathology; D006801:Humans; D009221:Myositis Ossificans / Q000473:pathology; D010001:Osteitis Deformans / Q000473:pathology; D010013:Osteogenesis Imperfecta / Q000473:pathology; D012516:Osteosarcoma / Q000209:etiology*
vernacular_title: Osteosarctoma powstajacy w preegzystujacych tkankach patologicznych.