Space-Occupying Lesions of the Internal Auditory Meatus and Cerebellopontine Angle

2015 ◽  
pp. 121-142 ◽  
Author(s):  
Andrew W. Morrison ◽  
T. T. King
Keyword(s):  
Cerebellopontine Angle ◽  
Internal Auditory Meatus

Vanishing tumour of the internal auditory meatus

2008 ◽  
Vol 123 (5) ◽  
pp. 563-565 ◽  
Author(s):  
A Jain ◽  
M Ablett ◽  
P Wardrop
Keyword(s):  
World Literature ◽  
Cerebellopontine Angle ◽  
Renal Carcinoma ◽  
Treatment Options ◽  
Internal Auditory Meatus ◽  
Radiological Investigation ◽  
Urological Symptoms ◽  
History Of ◽  
The Common ◽  
Rare Report

AbstractObjectives:We report a very rare case of prostatic metastasis in the internal auditory meatus, which disappeared with treatment.Case report:An elderly man presented with a history of hearing loss, dizzy spells and, more recently, facial palsy. He also complained simultaneously of urological symptoms, which on investigation revealed advanced, metastatic prostate cancer. Radiological investigation, in the form of magnetic resonance imaging, revealed an internal auditory meatus mass which resembled an acoustic neuroma. The patient was treated with hormone injections.Tumours of the internal auditory meatus and cerebellopontine angle are mostly primary. Rarely, metastatic deposits have been described in this region, from squamous cell carcinoma, malignant melanoma, malignant parotid oncocytoma, renal carcinoma, and lung and thyroid primaries.Conclusion:To our knowledge, this is a very rare report in the world literature of prostatic metastasis to the internal auditory meatus. We discuss the common presenting features, investigations and treatment options for metastatic prostatic tumours of the internal auditory meatus and cerebellopontine angle.

Asymmetry of the Internal Auditory Canals without Acoustic Neuroma

1978 ◽  
Vol 87 (6) ◽  
pp. 815-820 ◽  
Author(s):  
Kenneth D. Dolan ◽  
Richard W. Babin ◽  
Charles G. Jacoby
Keyword(s):  
Posterior Fossa ◽  
Acoustic Neuroma ◽  
Cerebellopontine Angle ◽  
Clinical Presentation ◽  
Internal Auditory Canal ◽  
Internal Auditory Meatus ◽  
Radiographic Appearance ◽  
The Past ◽  
Acoustic Neuromas ◽  
Normal Architecture

During the past five years, nine patients with “significant” unilateral enlargement of one internal auditory canal by polytomography were subsequently found to have freely filling canals on contrast posterior fossa myelography. The radiographic appearance of the enlarged canals varied greatly and included all the various configurations usually suggestive of acoustic neuroma. Likewise, the clinical presentation varied greatly from asymptomatic to highly suggestive of cerebellopontine angle tumor. This series underscores the essential nature of posterior fossa studies in the evaluation of potential acoustic neuromas and the variability of the normal architecture of the internal auditory meatus.

scholarly journals University of Toronto Combined Neurosciences Rounds — Rhabdomyosarcoma of the Head and Neck in Children

1983 ◽  
Vol 10 (2) ◽  
pp. 119-125
Author(s):  
R.P. Humphreys ◽  
D. McGreal ◽  
C.R. Fitz ◽  
L.E. Becker ◽  
M.A. Gribbin ◽  
...  
Keyword(s):  
Head And Neck ◽  
Middle Ear ◽  
Subarachnoid Space ◽  
Cerebellopontine Angle ◽  
Neck Region ◽  
Cranial Base ◽  
Internal Auditory Meatus ◽  
Head And Neck Region ◽  
University Of Toronto ◽  
Spinal Lesion

Rhabdomyosarcoma of the head and neck region in children frequently presents with otolaryngologic symptoms. But tumours which arise along the cranial base and involve the middle ear, mastoid or nasopharynx may be associated with specific neurological phenomena (Fleischer et al., 1975). The following case illustrates these points. It also records the unusual development of remote, intradural metastatic disease. Rhabdomyosarcoma rarely gains access to the subarachnoid space. When it does, the route of penetration is usually directly from ear through internal auditory meatus to cerebellopontine angle (Russell and Rubinstein, 1970). Our case developed a metastatic intradural spinal lesion without interposed disease.

An arteriovenous malformation within the internal acoustic meatus and cerebellopontine angle cistern

2011 ◽  
Vol 125 (12) ◽  
pp. 1275-1278 ◽  
Author(s):  
P N Patel ◽  
S Connor ◽  
S Brew ◽  
M J Gleeson
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Arteriovenous Malformation ◽  
Arteriovenous Malformations ◽  
Cerebellopontine Angle ◽  
High Flow ◽  
Internal Auditory Meatus ◽  
Resonance Imaging ◽  
History Of ◽  
Pre Treatment

AbstractObjectives:We report a case of an arteriovenous malformation within the internal auditory meatus and cerebellopontine angle, and we discuss its imaging appearances and management.Case report:A 50-year-old man presented with a two-year history of vertigo. Magnetic resonance imaging and magnetic resonance angiography demonstrated a lesion consisting of multiple ‘high flow’ vessels within the left internal auditory meatus and cerebellopontine angle. Transarterial embolisation was performed, with obliteration of the arteriovenous malformation.Conclusion:Arteriovenous malformations of the internal auditory meatus and cerebellopontine angle are exceedingly rare. It is important that a pre-treatment diagnosis is made, as the management of arteriovenous malformation differs from that of other, more common lesions at this site.

Delayed Otorrhea Following Translabyrinthine Craniotomy Approach to the Cerebellopontine Angle

2013 ◽  
Vol 74 (S 01) ◽  
Author(s):  
John Leonetti ◽  
Nadieska Caballero ◽  
Jacob Ossoff ◽  
Sam Marzo ◽  
Douglas Anderson
Keyword(s):  
Cerebellopontine Angle

Cochlear Microphonics: A Promising Tool for Hearing Monitoring in Cerebellopontine Angle Surgery

2014 ◽  
Vol 75 (S 02) ◽  
Author(s):  
Beatriz Madero ◽  
P. Avan ◽  
A. Bazin ◽  
A. Chays ◽  
T. Mom ◽  
...  
Keyword(s):  
Cerebellopontine Angle ◽  
Cochlear Microphonics ◽  
Promising Tool

Cerebellopontine Angle Chondrosarcomas: Endoscopic Endonasal Management

2015 ◽  
Vol 76 (S 01) ◽  
Author(s):  
Paulo Mesqita Filho ◽  
Daniel Prevedello ◽  
Leo Ditzel Filho ◽  
Edward Kerr ◽  
Cristian Martinez ◽  
...  
Keyword(s):  
Cerebellopontine Angle ◽  
Endoscopic Endonasal
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