title: Unique infiltrating morphology of a meningioma-a case report.
abstract: BACKGROUND
  We report on the case of a patient with meningioma that was correctly identified through biopsy.
  
  
  METHODS
  A 69-year-old woman presented with slight headache and was then examined at our hospital. Neurologic and physical examinations found no abnormality. Magnetic resonance imaging demonstrated a well-enhanced huge, dural-based, and plaque-like mass extending throughout the parietooccipital convexity and the posterior fossa. Tumors pressed the adjacent brain cortex while extending along the Virchow-Robin space. A CT scan also showed hyperostosis on the parietooccipital bone. Angiography demonstrated a vascular blush that appeared to be of a tumor-like shape. A biopsy was performed to confirm the diagnosis. The histologic findings demonstrated meningothelial meningioma with infiltration into the Virchow-Robin space.
  
  
  CONCLUSIONS
  Many radiographic patterns of meningioma have been reported, but the present case is quite rare. The radiographic and pathologic findings in our patient are discussed.
authors.affiliation: Department of Neurosurgery, Oita University, Oita 879-5593, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Ooba
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Abe
authors.forename: Yukihiro
authors.initials: Y
authors.lastname: Wakabayashi
authors.forename: Tohru
authors.initials: T
authors.lastname: Kamida
authors.forename: Keisuke
authors.initials: K
authors.lastname: Ishii
authors.forename: Minoru
authors.initials: M
authors.lastname: Fujiki
authors.forename: Hidenori
authors.initials: H
authors.lastname: Kobayashi
authors.forename: Tomoshige
authors.initials: T
authors.lastname: Asano
authors.forename: Yuzo
authors.initials: Y
authors.lastname: Hori
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Nagatomi
mesh_terms: D001706:Biopsy; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging; D002533:Cerebral Angiography; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008577:Meningeal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D008579:Meningioma / Q000175:diagnosis* / Q000473:pathology; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D014057:Tomography, X-Ray Computed