Unique infiltrating morphology of a meningioma-a case report.
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.
Ooba
Hiroshi
H
Department of Neurosurgery, Oita University, Oita 879-5593, Japan.
Abe
Tatsuya
T
Wakabayashi
Yukihiro
Y
Kamida
Tohru
T
Ishii
Keisuke
K
Fujiki
Minoru
M
Kobayashi
Hidenori
H
Asano
Tomoshige
T
Hori
Yuzo
Y
Nagatomi
Hirofumi
H
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