File:Atypical meningioma with calvarial involvement (Radiopaedia 39343-41609 Axial T1 18).png

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Atypical_meningioma_with_calvarial_involvement_(Radiopaedia_39343-41609_Axial_T1_18).png ‎(512 × 512 pixels, file size: 159 KB, MIME type: image/png)

Summary:

Description
  • Radiopaedia case ID: 39343
  • Image ID: 15601774
  • Image stack position: 18/22
  • Plane projection: Axial
  • Aux modality: T1
  • Study findings: There is a large extra-axial right occipitoparietal convexity T1 and T2 isointense solidly enhancing tumor. There is trans osseous invasion of the overlying right paramedian parietal bone with extracranial subgaleal tumor extension. There is a focal area of flair hyperintensity in the parietal white matter anterior and inferior to the lesion. The lesion is very close to the right lateral wall of the posterior third of the superior sagittal sinus with focal invasion of the right side of the sinus; the sinus is narrowed but not definitely occluded. MR venogram was not performed on this occasion. Within the central aspect of the lesion there are punctate areas of susceptibility corresponding to the calcification noted on the CT scan. There is no other intracranial mass lesions. There is no signal alteration in the brain parenchyma. IMPRESSION: There is extra-axial right parieto-occipital convexity solidly enhancing tumor with transosseous invasion; the imaging appearances are most probably of a meningioma. Hemangiopericytoma can also be considered but the presence of calcification is atypical, and generally haemangiopericyytomas destroy bone rather than 'pass through it'.
  • Modality: MRI
  • System: Central Nervous System
  • Findings: A sizable extra-axial mass with central calcification extends through the bone and elevates the scalp.
Date Published: 26th Jun 2016
Source https://radiopaedia.org/cases/atypical-meningioma-with-calvarial-involvement
Author Frank Gaillard
Permission
(Permission-reusing-text)		 http://creativecommons.org/licenses/by-nc-sa/3.0/

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Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)

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current09:25, 3 June 2021Thumbnail for version as of 09:25, 3 June 2021512 × 512 (159 KB)Fæ (talk | contribs)Radiopaedia project rID:39343 (batch #3243-18 A18)

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