Meningioma MRI: Difference between revisions

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MRI convexity meningioma.jpg| MRI demonstrating convexity meningioma<ref name="r">Image courtesy of  Dr Sajoscha Sorrentino [http://www.radiopaedia.org Radiopaedia](original file [http://radiopaedia.org/cases/convexity-meningioma-1 "here"]). [http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>     
MRI convexity meningioma.jpg|Convexity meningioma<ref name="r">Image courtesy of  Dr Sajoscha Sorrentino [http://www.radiopaedia.org Radiopaedia](original file [http://radiopaedia.org/cases/convexity-meningioma-1 "here"]). [http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>
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MRI Atypical meningioma.jpg|Atypical meningioma<ref>Image courtesy of  Dr Sajoscha Sorrentino [http://www.radiopaedia.org Radiopaedia](original file [http://radiopaedia.org/cases/convexity-meningioma-1 "here"]). [http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>
 
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MRI malignant meningioma Dr Ahmed Abd Rabou.jpg|Malignant meningioma<ref>Image courtesy of  Dr Ahmed Abd Rabou [http://www.radiopaedia.org Radiopaedia](original file [http://radiopaedia.org/cases/malignant-meningioma-1 "here"]). [http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>
 
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MRI olfactory meningioma Dr Frank Gaillard.jpg| Olfactory meningioma<ref>Image courtesy of  Dr Frank Gaillard [http://www.radiopaedia.org Radiopaedia](original file [http://radiopaedia.org/cases/olfactory-groove-meningioma-3 "here"]). [http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>
 
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MRI meningioma cystic Dr Frank Gaillard.jpg| Cystic meningioma<ref>Image courtesy of  Dr Frank Gaillard [http://www.radiopaedia.org Radiopaedia](original file [http://radiopaedia.org/images/880 "here"]). [http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>
 
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MRI meningioma dural tail sign Dr Frank Gaillard.jpg|Meningioma dural tail sign<ref>Image courtesy of  Dr Frank Gaillard [http://www.radiopaedia.org Radiopaedia](original file [http://radiopaedia.org/cases/meningioma-with-dural-tail "here"]). [http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>
 
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MRI meningioma falx Dr Hani Al Salam.jpg|Falx meningioma<ref>Image courtesy of  Dr Hani Al Salam [http://www.radiopaedia.org Radiopaedia](original file [http://radiopaedia.org/images/303566 "here"]). [http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>
 
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MRI invasive meningioma Dr Bita Abbasi.jpeg|Invasive meningioma<ref>Image courtesy of   Dr Bita Abbas [http://www.radiopaedia.org Radiopaedia](original file [http://radiopaedia.org/cases/meningioma-invasive-1 "here"]). [http://radiopaedia.org/licence Creative Commons BY-SA-NC]</ref>
 
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==References==
==References==

Revision as of 19:09, 28 September 2015

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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

  • Brain MRI with gadolinium is the investigation of choice for the diagnosis of meningioma.[1]
  • On brain MRI, meningioma is characterized by a homogeneous, well circumscribed, and extra-axial mass with a broad dural base.[1]
  • Other findings on brain MRI suggestive of meningioma include:[1]
  • Dural tail sign
  • CSF vascular cleft sign
  • Sunburst or spokewheel appearance of the vessels
  • When the appearance and location of meningioma are typical, the diagnosis can be made with a very high degree of specificity.[1]
  • In the case of anaplastic meningioma, the degree of edema observed on MRI correlates with the invasion of the surrounding tissue by the tumor.[1]
  • Meningioma signal characteristics observed on MRI include:[1]
  • T1 weighted image illustrates:
  • Isointense mass in 60-90% of the cases
  • Hypointense mass in 10-40% of cases
  • T1 C+ weighted image (image enhanced with gadolinium) usually illustrates an intense and homogeneous enhancement
  • T2 weighted image illustrates:
  • Isointense mass in 50% of the cases
  • Hyperintense mass in 35-40% of the cases
  • Hypointense mass in 10-15% of the cases

Gallery

  • Convexity meningioma[2]

    Convexity meningioma[2]

  • Atypical meningioma[3]

    Atypical meningioma[3]

  • Malignant meningioma[4]

    Malignant meningioma[4]

  • Olfactory meningioma[5]

    Olfactory meningioma[5]

  • Cystic meningioma[6]

    Cystic meningioma[6]

  • Meningioma dural tail sign[7]

    Meningioma dural tail sign[7]

  • Falx meningioma[8]

    Falx meningioma[8]

  • Invasive meningioma[9]

    Invasive meningioma[9]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Meningioma. Radiopaedia(2015) http://radiopaedia.org/articles/meningioma Accessed on September, 25th 2015
  2. ↑ Image courtesy of Dr Sajoscha Sorrentino Radiopaedia(original file "here"). Creative Commons BY-SA-NC
  3. ↑ Image courtesy of Dr Sajoscha Sorrentino Radiopaedia(original file "here"). Creative Commons BY-SA-NC
  4. ↑ Image courtesy of Dr Ahmed Abd Rabou Radiopaedia(original file "here"). Creative Commons BY-SA-NC
  5. ↑ Image courtesy of Dr Frank Gaillard Radiopaedia(original file "here"). Creative Commons BY-SA-NC
  6. ↑ Image courtesy of Dr Frank Gaillard Radiopaedia(original file "here"). Creative Commons BY-SA-NC
  7. ↑ Image courtesy of Dr Frank Gaillard Radiopaedia(original file "here"). Creative Commons BY-SA-NC
  8. ↑ Image courtesy of Dr Hani Al Salam Radiopaedia(original file "here"). Creative Commons BY-SA-NC
  9. ↑ Image courtesy of Dr Bita Abbas Radiopaedia(original file "here"). Creative Commons BY-SA-NC


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