Role of Susceptibility Weighted Imaging in Cerebellopontine Angle Schwannoma Vs Meningioma
Journal Title: International Journal of Contemporary Medicine surgery and Radiology - Year 2018, Vol 3, Issue 2
Abstract
Introduction: Vestibular schwannomas may sometimes be difficult to differentiate from cerebellopontine angle (CPA) meningiomas. Identifying foci of blooming on Susceptibility Weighted Imaging (SWI) has the potential to differentiate Vestibular schwannomas from CPA meningiomas. Hence; we planned the present study to assess the role of susceptibility weighted imaging in cerebellopontine angle schwannomas vs meningiomas cases. Material and methods: In this prospective study of 32 consecutive patients of CPA tumors (schwannomas and meningiomas), SWI sequence is done along with all other routine basic sequences in conventional MRI. For all cases histopathological diagnosis was compared after surgery. Result: In our prospective study 32 patients were included, out of which 23 patients are diagnosed as Vestibular schwannoma and 9 patients as meningiomas. Microhemorrhage was noted in T2* sequence (SWI) as blooming foci in 22 cases out of 32 which gives a potential diagnosis of vestibular schwannomas and rest of 9 cases shows no blooming and they are diagnosed as meningiomas. All patients underwent surgery and Histopathological diagnosis was compared with our study. Statistical analysis shows sensitivity of 95.6%, specificity of 100%, positive predictive value of 100% and negative predictive value of 90% and diagnosing accuracy of 96.8% for T2* weighted SWI sequence for microhemorrhages in vestibular schwannomas. Conclusion: MR imaging demonstrates microhemorrhages in most of VS in T2* -susceptibility weighted imaging. This helps to differentiate Vestibular schwannomas from CPA meningiomas. T2* - susceptibility weighted imaging should be used as a routine sequence to evaluate CPA tumors.
Authors and Affiliations
Saravanan K, E. A. Parthasarathy, Abubacker Sulaiman Farook, Praveen Sridharan, Gopalakrishnan . , Rajamani Anand
Keywords
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- EP ID EP424380
- DOI 10.21276/ijcmsr.2018.3.2.6
- Views 104
- Downloads 0
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