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Figure 1: Magnetic resonance image of the brain: (a) T1-weighted axial image showing well-defined hypointense cystic lesion of the occipital lobe. (b) T2-weighted axial image demonstrates the lesion to be brightly hyperintense. (c) Post-gadolinium axial image showing no enhancement of the lesion. (d) Diffusion-weighted axial image showing the lesion to be brightly hyperintense. (e) Fluid attenuated inversion recovery axial image showing internal heterogeneity giving dirty mop-like appearance

Figure 1: Magnetic resonance image of the brain: (a) T1-weighted axial image showing well-defined hypointense cystic lesion of the occipital lobe. (b) T2-weighted axial image demonstrates the lesion to be brightly hyperintense. (c) Post-gadolinium axial image showing no enhancement of the lesion. (d) Diffusion-weighted axial image showing the lesion to be brightly hyperintense. (e) Fluid attenuated inversion recovery axial image showing internal heterogeneity giving dirty mop-like appearance