Intracanalicular meningioma mimicking vestibular schwannoma.
Three cases of intracanalicular meningioma mimicking vestibular schwannoma are presented. In each case, a contrast-enhancing mass filling the internal auditory canal was identified on MR images and was originally diagnosed as a vestibular schwannoma. Although it is difficult to differentiate definitively between these lesions preoperatively, imaging findings inconsistent with a diagnosis of vestibular schwannoma can be identified. Preoperative identification of intracanalicular meningiomas permits alterations in surgical planning that allow for the more complete resection of these rare tumors.
Asaoka
Katsuyuki
K
Carolina Neuroscience Institute for Skull Base Surgery, 4030 Wake Forest Road, Suite 115, Raleigh, NC 27609, USA.
Barrs
David M
DM
Sampson
John H
JH
McElveen
John T
JT
Tucci
Debara L
DL
Fukushima
Takanori
T
D000328:Adult; D000368:Aged; D003287:Contrast Media; D003937:Diagnosis, Differential; D004428:Ear Neoplasms / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008577:Meningeal Neoplasms / Q000175:diagnosis*; D008579:Meningioma / Q000175:diagnosis*; D009464:Neuroma, Acoustic / Q000175:diagnosis*
D003287:Contrast Media