PMC5605860_01
Transaxial multisequential magnetic resonance imaging of the brain in the form of a T1 weighted image (WI), T2 WI, and fluid-attenuated inversion recovery (FLAIR) WI, showing an extra-axial, well-defined elliptical lesion located in the right frontal region. The lesion follows the signal intensity of the CSF in all sequences.
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fig1
Brain MRI with contrast showed corticosubcortical cystic encephalomalacic changes, centered on the right superior frontal gyrus and contacting the right lateral ventricle frontal horn (Figures 1 and 2).
A coronal T2 fat-saturated image demonstrates extra-axial T2 signal hyperintensity of the right frontal region, which communicated with the subarachnoid space (anterior interhemispheric fissure) but had no communication with the ventricular system.
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fig2
Brain MRI with contrast showed corticosubcortical cystic encephalomalacic changes, centered on the right superior frontal gyrus and contacting the right lateral ventricle frontal horn (Figures 1 and 2).
Three-dimensional fast spoiled gradient-echo (3D FSPGR) postcontrast axial and coronal images, showing no definitive enhancement of the right frontal lesion.
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fig3
The dominant cyst was surrounded by smaller cystic changes (Figure 3).