Meningioma MRI: Difference between revisions
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*Peritumoral [[edema]] | *Peritumoral [[edema]] | ||
*[[Dura mater|Dural]] tail: enhancement of the [[Dura mater|dura]] infiltrating away from the [[lesion]] | *[[Dura mater|Dural]] tail: enhancement of the [[Dura mater|dura]] infiltrating away from the [[lesion]] | ||
*A [[CSF]] [[cleft]] (may contain [[CSF]] or cortical vessels) between the tumor and the underlying brain cortex | *A [[CSF]] [[cleft]] (may contain [[CSF]] or [[Cortical area|cortical]] [[Blood vessel|vessels]]) between the [[tumor]] and the underlying [[brain]] [[cortex]] | ||
*Intratumoral and peritumoral cysts in cystic meningiomas | *Intratumoral and peritumoral [[Cyst|cysts]] in cystic meningiomas | ||
*On T1-weighted sequence: | *On T1-weighted sequence: | ||
:* Isointensity to slight hypointensity relative to grey matter | :* Isointensity to slight hypointensity relative to [[grey matter]] | ||
:* Extensive dural thickening in meningioma en plaque | :* Extensive [[Dura mater|dural]] thickening in meningioma en plaque | ||
:* Uniform low signal intensity in microcystic meningiomas | :* Uniform low signal intensity in microcystic meningiomas | ||
*On T2-weighted sequence: | *On T2-weighted sequence: | ||
:* Isointensity to slight hyperintensity relative to grey matter | :* Isointensity to slight hyperintensity relative to [[grey matter]] | ||
:* Calcification showing as areas of low signal intensity | :* [[Calcification]] showing as areas of low signal intensity | ||
:* High signal intensity in microcystic meningiomas | :* High signal intensity in microcystic meningiomas | ||
Revision as of 15:59, 11 June 2019
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Meningioma Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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Meningioma MRI On the Web |
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American Roentgen Ray Society Images of Meningioma MRI |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Haytham Allaham, M.D. [2]
Overview
Brain MRI with gadolinium is the investigation of choice for the diagnosis of meningioma. On brain MRI, meningioma is characterized by a homogeneous, well circumscribed, and extra-axial mass with a broad dural base. Other findings on brain MRI suggestive of meningioma include CSF vascular cleft sign, dural tail sign, and sunburst or spokewheel appearance of the vessels.[1]
MRI
Head MRI may be helpful in the diagnosis of meningioma. Findings on MRI suggestive of/diagnostic of meningioma include:[2]
- Lobular, extra axial masses with well-circumscribed margins
- Broad-based dural attachment
- Inward displacement of the cortical grey matter
- Meningioma en plaque: Tumor with a more infiltrating growth pattern over the dura
- Ardent, homogeneous enhancement after contrast administration
- In some cases, may have areas of central necrosis or calcification that do not enhance
- Peritumoral edema
- Dural tail: enhancement of the dura infiltrating away from the lesion
- A CSF cleft (may contain CSF or cortical vessels) between the tumor and the underlying brain cortex
- Intratumoral and peritumoral cysts in cystic meningiomas
- On T1-weighted sequence:
- Isointensity to slight hypointensity relative to grey matter
- Extensive dural thickening in meningioma en plaque
- Uniform low signal intensity in microcystic meningiomas
- On T2-weighted sequence:
- Isointensity to slight hyperintensity relative to grey matter
- Calcification showing as areas of low signal intensity
- High signal intensity in microcystic meningiomas
Gallery
References
- ↑ Meningioma. Radiopaedia(2015) http://radiopaedia.org/articles/meningioma Accessed on September, 25 2015
- ↑ Watts J, Box G, Galvin A, Brotchie P, Trost N, Sutherland T (2014). "Magnetic resonance imaging of meningiomas: a pictorial review". Insights Imaging. 5 (1): 113–22. doi:10.1007/s13244-013-0302-4. PMC 3948902. PMID 24399610.