title: [Problem of malignant transformation in pre-existing bone changes].
mesh_terms: D001847:Bone Diseases / Q000473:pathology*; D001859:Bone Neoplasms / Q000209:etiology*; D002471:Cell Transformation, Neoplastic / Q000473:pathology*; D006801:Humans; D012306:Risk; D012509:Sarcoma / Q000209:etiology*
vernacular_title: Zagadnienia przemiany złośliwej w preegzystujacych zmianach kości.