Meningioma MRI: Difference between revisions
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*Ardent, homogeneous enhancement after contrast administration | *Ardent, homogeneous enhancement after contrast administration | ||
*In some cases, may have areas of central necrosis or calcification that do not enhance | *In some cases, may have areas of central necrosis or calcification that do not enhance | ||
* | *Peritumoral edema | ||
*Dural tail: ehancement of the dura infiltrating away from the lesion | *Dural tail: ehancement 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 | *A csf cleft (may contain csf or cortical vessels) between the tumor and the underlying brain cortex | ||
Revision as of 16:44, 24 April 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 infilterating 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: ehancement 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
- 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
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![Convexity meningioma[3]](/images/c/c2/MRI_convexity_meningioma.jpg)
Convexity meningioma[3]
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![Atypical meningioma[3]](/images/b/b7/MRI_Atypical_meningioma.jpg)
Atypical meningioma[3]
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![Anaplastic meningioma[4]](/images/1/11/MRI_meningioma_anaplastic_Dr_Frank_Gaillard.jpg)
Anaplastic meningioma[4]
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![Malignant meningioma[3]](/images/1/19/MRI_malignant_meningioma_Dr_Ahmed_Abd_Rabou.jpg)
Malignant meningioma[3]
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![Olfactory meningioma[3]](/images/8/8c/MRI_olfactory_meningioma_Dr_Frank_Gaillard.jpg)
Olfactory meningioma[3]
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![Cystic meningioma[3]](/images/5/54/MRI_meningioma_cystic_Dr_Frank_Gaillard.jpg)
Cystic meningioma[3]
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![Meningioma dural tail sign[3]](/images/9/90/MRI_meningioma_dural_tail_sign_Dr_Frank_Gaillard.jpg)
Meningioma dural tail sign[3]
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![Meningioma with vascular pedicle[3]](/images/1/16/MRI_meningioma_with_vascular_pedicle_Dr_Frank_Gaillard.jpg)
Meningioma with vascular pedicle[3]
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![Meningioma falx[3]](/images/5/5f/MRI_meningioma_falx_Dr_Hani_Al_Salam.jpg)
Meningioma falx[3]
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![Invasive meningioma[3]](/images/5/51/MRI_invasive_meningioma_Dr_Bita_Abbasi.jpeg)
Invasive meningioma[3]
![Convexity meningioma[3]](/index.php/File:MRI_convexity_meningioma.jpg)
![Atypical meningioma[3]](/index.php/File:MRI_Atypical_meningioma.jpg)
![Anaplastic meningioma[4]](/index.php/File:MRI_meningioma_anaplastic_Dr_Frank_Gaillard.jpg)
![Malignant meningioma[3]](/index.php/File:MRI_malignant_meningioma_Dr_Ahmed_Abd_Rabou.jpg)
![Olfactory meningioma[3]](/index.php/File:MRI_olfactory_meningioma_Dr_Frank_Gaillard.jpg)
![Cystic meningioma[3]](/index.php/File:MRI_meningioma_cystic_Dr_Frank_Gaillard.jpg)
![Meningioma dural tail sign[3]](/index.php/File:MRI_meningioma_dural_tail_sign_Dr_Frank_Gaillard.jpg)
![Meningioma with vascular pedicle[3]](/index.php/File:MRI_meningioma_with_vascular_pedicle_Dr_Frank_Gaillard.jpg)
![Meningioma falx[3]](/index.php/File:MRI_meningioma_falx_Dr_Hani_Al_Salam.jpg)
![Invasive meningioma[3]](/index.php/File:MRI_invasive_meningioma_Dr_Bita_Abbasi.jpeg)
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.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 Image courtesy of Dr Sajoscha Sorrentino Radiopaedia(original file "here"). Creative Commons BY-SA-NC
- ↑ Image courtesy of Dr Frank Gaillard Radiopaedia(original file "here"). Creative Commons BY-SA-NC