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Figure 1: (a-c) Axial, sagittal, and coronal MRI images of a patient of tectal glioma treated with GKRS. (d-f) follow-up images after 1 year of GKRS showing contrast enhancement in an earlier hypointense lesion suggestive of either dedifferentiation into higher grade lesion or radiation necrosis

Figure 1: (a-c) Axial, sagittal, and coronal MRI images of a patient of tectal glioma treated with GKRS. (d-f) follow-up images after 1 year of GKRS showing contrast enhancement in an earlier hypointense lesion suggestive of either dedifferentiation into higher grade lesion or radiation necrosis