PMC5385773_01
Unenhanced axial computed tomography scan shows a heterogeneous hyperdense mass in and adjacent to cavernous sinus and petrous bone which appear oval with elongation into the Meckel's cave. No calcification was seen in the lesion
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F1
An unenhanced computed tomography (CT) scan of the brain showed a hyperdense mass in and adjacent to the left cavernous sinus and petrous bone [Figure 1].
Magnetic resonance images of the brain. (A) Axial T2-weighted MRI shows an extracranial mass which is appearing predominantly hypointense with central areas of hyperintensity due to cystic degeneration and haemorrhage. (B) Coronal T1-weighted MRI shows the mass to be predominantly hyperintense with central areas of hypointensity. (C) Axial T1-weighted post contrast MRI shows the mass to be predominantly hyperintense without any appreciable enhancement. (D) Axial susceptibility weighted image (SWI) shows mild blooming in centre suggestive of hemorrhage
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F2
On magnetic resonance imaging (MRI), the mass appears to be predominantly hypointense on T2-weighted axial MRI [Figure 2A], predominantly hyperintense on T1-weighted coronal image [Figure 2B], with no significant enhancement on post-contrast T1-weighted axial images [Figure 2C] and mild blooming in centre due to hemorrhage [Figure 2D] as well as some cystic degeneration.