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Figure 1: (a) Axial Non-contrast CT head showing hyperdense lesion with central hypodense area in the posterior fossa without calcification, (b) T2-weighted MR image showing the hypo- to isointense lesion with large flow voids in the lesion, and (c) the lesion is avidly enhancing on contrast. (d) ASL sequence showing the increased perfusion in the lesion

Figure 1: (a) Axial Non-contrast CT head showing hyperdense lesion with central hypodense area in the posterior fossa without calcification, (b) T2-weighted MR image showing the hypo- to isointense lesion with large flow voids in the lesion, and (c) the lesion is avidly enhancing on contrast. (d) ASL sequence showing the increased perfusion in the lesion