2014
DOI: 10.1007/s12070-014-0736-0
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Role of Magnetic Resonance Imaging in Evaluation of Cerebellopontine Angle Schwannomas

Abstract: The aim of the present study was to evaluate the role of Magnetic Resonance Imaging (MRI) to localize and characterize the MR imaging features of cerebellopontine angle schwannomas and to compare with surgical/ histopathological findings. It was a prospective study which included 19 patients, who presented with signs and symptoms s/o any lesion in the CP angle and were referred to the radiology department for MRI. All patients included in the study were subjected to detailed clinical history and physical exami… Show more

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Cited by 37 publications
(27 citation statements)
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“…Vestibular schwannoma (VS), also called acoustic neuroma, is a benign Schwann cell-derived tumour arising from the vestibulocochlear nerve. These tumors represent 85% of intracranial growths arising at the cerebellopontine angle [1]. The Koos grading scale is commonly used to classify tumour size with respect to extrameatal extension and brainstem compression (Table 1) [2].…”
Section: Introductionmentioning
confidence: 99%
“…Vestibular schwannoma (VS), also called acoustic neuroma, is a benign Schwann cell-derived tumour arising from the vestibulocochlear nerve. These tumors represent 85% of intracranial growths arising at the cerebellopontine angle [1]. The Koos grading scale is commonly used to classify tumour size with respect to extrameatal extension and brainstem compression (Table 1) [2].…”
Section: Introductionmentioning
confidence: 99%
“…3 About 6 to 10% of all intracranial tumors arise in or involve the cerebellopontine angle. 5 The first most common CPA tumors are vestibular schwannomas, which constitute 80 to 90%. The next most common CPA tumor constitute 10 to 15% is meningiomas.…”
Section: Discussionmentioning
confidence: 99%
“…Hyperostosis and calcifications are more frequently seen in meningiomas and involvement of the internal auditory canal (IAC) is less frequent in meningiomas than vestibular schwannomas. 4,5 Vesibular schwannomas are isointense to hypointense to brain in T1W images and hyperintense on T2W images. They may be hetrogenous due to cystic degeneration and haemorrhage.…”
Section: Discussionmentioning
confidence: 99%
“…The most common neoplasms in the PCF are CPA tumors, which are almost all benign. Ves-tibular schwannomas are by far the most common CPA tumor, accounting for over 85% of all CPA tumors, followed by meningiomas (31,32). The key to visualizing an isoattenuating CPA mass is to carefully evaluate the CPA cistern for effacement and asymmetry, abnormal soft-tissue opacification, or expansion of the internal auditory canal.…”
Section: Posterior Cranial Fossamentioning
confidence: 99%