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(a-c) Preoperative magnetic resonance imaging performed at the same level. (a) Axial diffusion-weighted sequence showing a heterogeneously hyperintense mass in the right frontal lobe (arrow). (b and c) Postcontrast (b) axial and (c) coronal T1-weighted magnetic resonance imaging showing a cystic mass in the right frontal lobe, 30 mm × 35 mm × 34 mm in diameter, with rim-like enhancement and perilesional edema (arrow).
