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Date Published: 21/04/2022
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DOI: https://doi.org/10.51298/vmj.v511i2.2116
Issue
Vol. 511 No. 2 (2022)
Section
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How to Cite
Hà Khương, N. ., & Duy Hùng, N. . (2022). DIAGNOSTIC PERFORMANCEOF MAGNETIC RESONANCE IMAGING IN THE DISCREPANCY DIAGNOSIS OF CEREBELLOPONTINE ANGLE MENINGIOMA AND VESTIBULAR SCHWANNOMAS. Vietnam Medical Journal, 511(2). https://doi.org/10.51298/vmj.v511i2.2116

DIAGNOSTIC PERFORMANCEOF MAGNETIC RESONANCE IMAGING IN THE DISCREPANCY DIAGNOSIS OF CEREBELLOPONTINE ANGLE MENINGIOMA AND VESTIBULAR SCHWANNOMAS

Nguyễn Hà Khương1, Nguyễn Duy Hùng1,2,
1 Hanoi Medical University
2 Vietnam-Germany Friendship Hospital

Main Article Content

Abstract

Objective: Our study aimed to investigate the imaging characteristic and the usefulness of magnetic resonance imaging (MRI) in differentiation diagnosing cerebellopontine angle meningioma and vestibular schwannomas. Materials and Methods: A total of 72 patients (36 patients with meningioma and 36 with vestibular schwannomas) were enrolled in this retrospective study. All patients were diagnosed using conventional MRI sequences and diffusion-weighted imaging (DWI) and were surgically treated and pathologically diagnosed. We identify imaging features of distinguishing the cerebellopontine angle masses comprise tumor shape and consistency, measurement of maximum tumor diameter, the length of internal auditory canal component and dural tail, and tumor imaging manifestation in conventional MRI sequences and DWI. Statical analysis using Mann–Whitney U test, independent-samples t-test, receiver operating characteristic curve (ROC), and Spearman’s correlation analyses. Results: Meningiomas usually appear as homogenous masses, vividly enhanced on T1W post-contrast sequence with the dural-tail sign. VS typically exhibits as a heterogeneous mass, enhancing intensely and extending into and enlarging the internal auditory meatus. On conventional MRI, schwannomas and meningiomas typically appear hypo- or isointense in T1WI. On T2W, meningiomas manifest as a homogeneous isointense and hyperintense signal neoplasm, while schwannomas usually show heterogeneous hyperintensity due to intratumoral hemorrhage and cystic degeneration. In addition to conventional MRI sequences, meningiomas can show restricted diffusion on DWI, unlike vestibular schwannomas that rarely show restricted diffusion. ROC analysis for maximum tumor diameter, the length of internal auditory canal component, and dural tail reveal that the area under the curve values were 0.72, 0.68, and 0.67, respectively. Conclusion: MRI is the modality of choice for differential diagnosis of cerebellopontine angle meningioma and vestibular schwannomas. Also assisting in preoperative planning and prognosis outcome of patients.

Article Details

Keywords

cerebellopontine angle, meningioma, vestibular schwannoma, magnetic resonance imaging, apparent diffusion coefficient

References

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