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(a and b) Pre-op axial MRI. Imaging reveals an extra-axial lesion pushing the frontal and parietal left lobes and distorting normal left-brain anatomy. On the opposite side, the Omega shape has been highlighted in white. (c) Post-op axial MRI. Imaging demonstrates appropriate excision. Histologically, a meningothelial meningioma was found. (d) Follow-up. No motor deficits seen at neurological examination
