Article Figures & Data
Figures
- Fig. 2.
MR images of a 43-year-old woman with EVN of the right parietal lobe. A, Axial T1WI shows a hypointense well-demarcated large mass (small arrows) with hyperintensity of its central area due to hemorrhage (large arrow). B, Axial FLAIR image shows a heterogeneous hyperintense mass with only slight peritumoral edema. C and D, Coronal and sagittal postcontrast T1WI show mild inhomogeneous “zebra-like” enhancement of the solid portion. E, Hematoxylin and eosin staining shows extensive microcystic change.
- Fig. 1.
MR images of a 33-year-old man with atypical EVN of the right frontal lobe. A, Axial precontrast T1WI shows a well-demarcated large mass in the right frontal lobe (small arrows), isointense to gray matter dotted with small foci of hyperintensity representing hemorrhage (large arrow). B, Axial T2WI reveals mixed hyperintense to hypointense components with moderate peritumoral edema. C and D, Axial and sagittal postcontrast T1WI demonstrate a mass with uneven and patchy enhancement. A small focus of infiltration adjacent to the mass is noted in corpus callosum (arrow, D). E, Hematoxylin and eosin staining shows the composition of monotonous small tumor cells with regular round nuclei, and mitosis (arrow). F, Results of immunohistochemical assays demonstrate Ki-67 > 30%.
- Fig. 3.
MR images of a 20-year-old woman with EVN of the right temporal lobe. A, Axial T1WI shows a homogeneous hypointense lesion located deep in the right temporal lobe. The temporal horn of right lateral ventricle is displaced (arrow). B, Axial T2WI image shows markedly hyperintense signal within the lesion approaching that of the CSF. No obvious perilesional edema is observed. C and D, Axial and coronal postcontrast T1WI show no obvious enhancement.
- Fig. 4.
MR and CT images of a 40-year-old man with EVN of the sellar and suprasellar region. A, Axial T1WI shows a lesion with primarily isointense signal. B, Axial T2WI shows a mixed isointense to hyperintense lesion. C, Coronal postcontrast T1WI demonstrates the heterogeneously strong enhancement of the lesion and the transverse infiltration toward vascular structures on both sides (arrows). D, Axial precontrast CT image shows a lesion with slightly increased attenuation and small foci of decreased attenuation of cystic degeneration.
