File:Atypical meningioma with skull invasion (Radiopaedia 34357-35648 Axial T1 1).png

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Atypical_meningioma_with_skull_invasion_(Radiopaedia_34357-35648_Axial_T1_1).png ‎(512 × 512 pixels, file size: 165 KB, MIME type: image/png)

Summary:

Description
  • Radiopaedia case ID: 34357
  • Image ID: 11084178
  • Image stack position: 1/22
  • Plane projection: Axial
  • Aux modality: T1
  • Study findings: Large well-defined extra-axial mass in the right posterior frontal region with a large dural attachment and adjacent skull erosion. It appears durally based. The lesion measures 50 x 44 x 42 mm (AP by transverse by CC). It is both solid and cystic, with a large solid component anterolaterally and complex septated cystic component posteromedially and inferiorly. The solid component is mildly T2 and FLAIR hyperintense, with marked restricted diffusion and mild to moderate reasonably uniform enhancement. No flow voids seen. The wall of the lesion is enhancing, with minor irregularity. The septa of the cystic portion also enhancing. Posteromedially, there is a mild degree of vasogenic edema. Local mass-effect is present causing only 2 mm midline shift without ventricular effacement or obstruction. MR perfusion shows increase in CBV (not shown). Spectroscopy trace adds little  (not shown). At the osseous component, the margin of destruction is clear with no surrounding enhancement for hyperostosis on CT. No other intra or extra-axial lesion identified. The remainder of the study is unremarkable.
  • Modality: MRI
  • System: Central Nervous System
  • Findings: Large extra-axial mass, both solid and cystic, with homogeneous enhancement, localized in the right posterior frontal region with a large dural attachment and adjacent skull erosion. There is local mass effect.
Date Published: 17th Feb 2015
Source https://radiopaedia.org/cases/atypical-meningioma-with-skull-invasion
Author RMH Neuropathology
Permission
(Permission-reusing-text)		 http://creativecommons.org/licenses/by-nc-sa/3.0/

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