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KMID : 1103720110640050429
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Journal of the Korean Society of Radiology
2011 Volume.64 No. 5 p.429 ~ p.434
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Angiomatous Meningioma: CT and MR Imaging Features
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An Hee-Yeon
Yu In-Kyu
Kim Min-Sun
Kim Seung-Min
Kim Han-Kyu
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Abstract
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Purpose: To describe the computed tomography and magnetic resonance imaging features of angiomatous meningiomas.
Materials and Methods : We reviewed the imaging findings of six patients with pathologically proven angiomatous meningiomas and characterized the location, margin, dura base, CT attenuation, MR signal intensity, intratumoral signal void, contrast enhancement, intratumoral cystic change, and peritumoral edema.
Results: Most tumors showed high signal intensity on T2-weighted images, and low signal intensity on diffusion-weighted images. After intravenous contrast administration, the tumor showed heterogeneous strong enhancement. Most tumors had a lobulated margin with prominent intratumoral signal voids. Four patients showed marked or small intratumoral cystic changes.
Conclusion: Typically, angiomatous meningiomas were dura-based masses characterized by lobulated margins with high signal intensity on T2-weighted imaging (T2WI), low signal intensity on diffusion-weighted imaging (DWI), prominent intratumoral signal voids, intratumoral cystic changes, and marked enhancement after intravenous contrast administration.
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KEYWORD
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Meningioma, Angiomatous, Tomography, X-Ray Computed, Magnetic Resonance Imaging
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