Document Detail

Meningioma of the internal auditory canal.
MedLine Citation:
PMID:  9270429     Owner:  NLM     Status:  MEDLINE    
Meningiomas are the second most common tumor to involve the cerebellopontine angle (CPA), but controversy exists as to whether they can arise within the internal auditory canal (IAC) or whether involvement of the IAC occurs secondarily by extension from the CPA. This paper reports on a patient with an enhancing IAC meningioma that then grew and on subsequent scans was found to involve the CPA. This case demonstrates that these tumors can arise within the IAC and can grow out to involve the CPA. These findings are discussed within the context of meningioma tumor genetics and the histologic evidence for precursor cells in the IAC. The radiologic findings useful in distinguishing an acoustic neuroma from a meningioma are reviewed in the light of this case. While an enhancing mass projecting into the IAC is most often an acoustic neuroma, this radiologic findings is not pathognomonic.
A G Zeitouni; D Zagzag; N L Cohen
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  The Annals of otology, rhinology, and laryngology     Volume:  106     ISSN:  0003-4894     ISO Abbreviation:  Ann. Otol. Rhinol. Laryngol.     Publication Date:  1997 Aug 
Date Detail:
Created Date:  1997-09-11     Completed Date:  1997-09-11     Revised Date:  2006-05-15    
Medline Journal Info:
Nlm Unique ID:  0407300     Medline TA:  Ann Otol Rhinol Laryngol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  657-61     Citation Subset:  AIM; IM    
Department of Otolaryngology, New York University School of Medicine-Bellevue Hospital Center, NY, USA.
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MeSH Terms
Cerebellar Neoplasms / diagnosis,  pathology
Cerebellopontine Angle
Diagnosis, Differential
Ear Neoplasms* / diagnosis,  pathology
Ear, Inner / pathology*
Meningeal Neoplasms* / diagnosis,  pathology
Meningioma* / diagnosis,  pathology
Middle Aged

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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