title: [Osteoblastoma simulating osteosarcoma of the petrous bone].
abstract: The case of a 25-year-old patient with a rare osteoblastoma-like osteosarcoma of the pars petrosa is discussed. CT scans (thin layers) showed a lytic, the skull basis-resorbing tumor with slight matrix calcification. MRI demonstrated a mainly signal intense tumor in T1-weighted images with less signal intensity at its borders which showed an enhancing peripheral zone after use of a gadolinium-containing medium.
authors.affiliation: Abteilung für Röntgendiagnostik, Universitätskrankenhaus Eppendorf, Hamburg.
authors.forename: C
authors.initials: C
authors.lastname: Weber
authors.forename: R
authors.initials: R
authors.lastname: Maas
mesh_terms: D000328:Adult; D003399:Craniotomy; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis / Q000601:surgery; D018215:Osteoblastoma / Q000175:diagnosis* / Q000601:surgery; D012516:Osteosarcoma / Q000175:diagnosis* / Q000601:surgery; D010579:Petrous Bone / Q000473:pathology / Q000601:surgery; D012086:Reoperation; D012888:Skull Neoplasms / Q000175:diagnosis* / Q000601:surgery; D014057:Tomography, X-Ray Computed
vernacular_title: Osteoblastomähnliches Osteosarkom des Felsenbeins.