title: Primary intraosseous meningioma mimicking osteosarcoma: case report.
abstract: With an incidence rate of 15-20%, meningiomas are one of the most common brain tumors among benign intracranial tumors. They are distributed as follows in intracranial localizations: parasagittal and falx (25%), convexity (18%), sphenoid wing (18%), parasellar (12%), posterior fossa (10%), intraventricular (2%), intraorbital (1%), and extracranial (1%). The most common extradural localizations are the paranasal sinuses, nasal cavity, skin, neck, glands, and intraosseous space. Intradiploic meningiomas are generally localized in the frontoparietal and orbital regions. Due to their low incidence and lack of adequate preoperative diagnostic testing, intradiploic meningiomas are generally mistaken for primary calvarial bone tumors and en plaque meningiomas. Our case was discussed here with literature findings since primary intradiploic meningioma is uncommon and poses diagnostic challenges.
authors: Sakarya Training and Research Hospital, Department of Radiology, Sakarya, Turkey.
authors: Kıyasettin
authors: K
authors: Asil
authors: Yakup Ersel
authors: YE
authors: Aksoy
authors: Can
authors: C
authors: Yaldiz
authors: Zeynep
authors: Z
authors: Kahyaglu
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008579:Meningioma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008875:Middle Aged; D012516:Osteosarcoma / Q000175:diagnosis / Q000473:pathology; D012888:Skull Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D013701:Temporal Bone / Q000473:pathology / Q000601:surgery*