Meningioma CT: Difference between revisions

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Revision as of 15:24, 11 June 2019

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Haytham Allaham, M.D. [2]

Overview

Head CT scan may be diagnostic of meningioma. Findings on CT scan suggestive of meningioma include homogeneously hyperdense lesion, calcification, hyperostosis, lytic lesions, and pneumosinus dilatans. Although MRI is the diagnostic study of choice, CT is easier to use and may be used in cases where there is a contraindication to the use of an MRI.

CT Scan

Head CT scan may be helpful in the diagnosis of meningioma. Findings on CT scan suggestive of/diagnostic of meningioma include:^[1]^[2]

Round or elongated extraaxial mass
Mass with broad attachment to the dura
Isodense mass. Can often be hyperdense or slightly hypodense compared to the cerebrum
CSF attenuation cleft
Tumor intense enhancement
Homogeneous mass that can show heterogeneity depending on the presence of fat, calcium, or tumor necrosis
Hyperostosis of adjacent skull in benign meningiomas
Edema
Mixed solid and cystic mass in clear cell meningiomas

Despite MRI being the imaging study of choice, CT is more widely available, better in urgent settings, and used when patients have a contraindication to MRI usage such as pacemakers.

Gallery

Calcified meningioma ^[3]
Olfactory meningioma^[3]
Cerebellopontine angle meningioma^[3]
Sphenoid wing meningioma^[3]
Cerebral convexity meningioma^[3]
Falx meningioma^[3]

References

↑ Saloner D, Uzelac A, Hetts S, Martin A, Dillon W (2010). "Modern meningioma imaging techniques". J Neurooncol. 99 (3): 333–40. doi:10.1007/s11060-010-0367-6. PMC 2945460. PMID 20809250.
↑ Yu KB, Lim MK, Kim HJ, Suh CH, Park HC, Kim EY; et al. (2002). "Clear-cell meningioma: CT and MR imaging findings in two cases involving the spinal canal and cerebellopontine angle". Korean J Radiol. 3 (2): 125–9. doi:10.3348/kjr.2002.3.2.125. PMC 2713835. PMID 12087202.
↑ ^3.0 ^3.1 ^3.2 ^3.3 ^3.4 ^3.5 Image courtesy of Dr M Venkatesh Radiopaedia(original file "here").Creative Commons BY-SA-NC

Template:WikiDoc Sources

[pmid20809250-1] Saloner D, Uzelac A, Hetts S, Martin A, Dillon W (2010). "Modern meningioma imaging techniques". J Neurooncol. 99 (3): 333–40. doi:10.1007/s11060-010-0367-6. PMC 2945460. PMID 20809250.

[pmid12087202-2] Yu KB, Lim MK, Kim HJ, Suh CH, Park HC, Kim EY; et al. (2002). "Clear-cell meningioma: CT and MR imaging findings in two cases involving the spinal canal and cerebellopontine angle". Korean J Radiol. 3 (2): 125–9. doi:10.3348/kjr.2002.3.2.125. PMC 2713835. PMID 12087202.

[radio-3] 3.0 ^3.1 ^3.2 ^3.3 ^3.4 ^3.5 Image courtesy of Dr M Venkatesh Radiopaedia(original file "here").Creative Commons BY-SA-NC

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 ==Overview==
-Head [[CT scan]] may be diagnostic of meningioma. Findings on CT scan suggestive of meningioma include homogeneously hyperdense lesion, [[calcification]],  [[hyperostosis]], [[lytic]] lesions, and [[pneumosinus dilatans]].
+Head [[CT scan]] may be diagnostic of meningioma. Findings on CT scan suggestive of meningioma include homogeneously hyperdense lesion, [[calcification]],  [[hyperostosis]], [[lytic]] lesions, and [[pneumosinus dilatans]]. Although MRI is the diagnostic study of choice, CT is easier to use and may be used in cases where there is a contraindication to the use of an MRI.
 ==CT Scan==