title: Intradiploic meningioma mimicking calvarial metastasis: case report.
abstract: Meningiomas are the most common benign intracranial neoplasms. Nearly 20% of all primary intracranial tumors are meningiomas. Primary intraosseous meningiomas are a subtype of the meningiomas that represents the most uncommon manifestation of meningiomas. Although rare, these tumors can be found to occur in unexpected areas of the head and neck. The patient was a 78- year-old male who was operated two times for urinary bladder cancer. During his routine oncology follow-ups, the PET scan demonstrated a hyperactive area in the right parietal bone. Preoperative diagnosis was a metastasis, but histological examination revealed an osteolytic interosseous meningioma. The possibility of an intraosseous meningioma mimicking a metastatic tumor should be kept in mind.
authors.affiliation: Marmara University, Faculty of Medicine, Neurosurgery Department, Istanbul, Turkey. ulasyener@yahoo.com
authors.forename: Ulaş
authors.initials: U
authors.lastname: Yener
authors.forename: Fatih
authors.initials: F
authors.lastname: Bayrakli
authors.forename: Erkan
authors.initials: E
authors.lastname: Vardereli
authors.forename: Aydin
authors.initials: A
authors.lastname: Sav
authors.forename: Selçuk
authors.initials: S
authors.lastname: Peker
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008579:Meningioma / Q000000981:diagnostic imaging* / Q000556:secondary; D016609:Neoplasms, Second Primary / Q000000981:diagnostic imaging* / Q000473:pathology; D010294:Parietal Bone / Q000000981:diagnostic imaging* / Q000473:pathology; D049268:Positron-Emission Tomography; D011859:Radiography; D012888:Skull Neoplasms / Q000000981:diagnostic imaging* / Q000556:secondary; D001749:Urinary Bladder Neoplasms / Q000473:pathology