title: [Primary osteosarcoma of the thyroid gland].
abstract: Primary extraosseous osteosarcoma of the thyroid gland is a very rare tumor with a poor prognosis. Only few cases have been reported in the literature. Metastases of osteosarcoma in the thyroid gland were also found but are very seldom. A primary thyroid tumor with osteosarcomatous differentiation in a 82-year-old man is presented and the histopathological classification, biological features and possible mechanisms of the occurrence of such thyroid tumors are briefly discussed.
authors.affiliation: Klinik für Viszeral-, Thorax- und Gefässchirurgie, Krankenhaus Heidenheim.
authors.forename: T
authors.initials: T
authors.lastname: Strohschneider
authors.forename: W
authors.initials: W
authors.lastname: Wirth
authors.forename: M
authors.initials: M
authors.lastname: Holzwarth
authors.forename: D
authors.initials: D
authors.lastname: Timm
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005500:Follow-Up Studies; D006801:Humans; D008197:Lymph Node Excision; D008297:Male; D012516:Osteosarcoma / Q000473:pathology / Q000601:surgery*; D013961:Thyroid Gland / Q000473:pathology; D013964:Thyroid Neoplasms / Q000473:pathology / Q000601:surgery*; D013965:Thyroidectomy