Legend Left: Non contrast CT, demonstrating an ill-defined, heterogeneous, mostly hyperdense lesion in the left temporal lobe, extending medially, with mass effect on the left basal ganglia and slight rightward shift of the third ventricle. Center: MR, T2 weighted axial image showing peripheral hyperintense signal and heterogeneous core of the lesion. Right: Flair MR axial image revealing similar findings as the T2 image. The uncus compresses the left cerebral peduncle.

Legend Left: T1 weighted axial MR image demonstrating mostly isointense signal of the lesion, with a small amount of T1 shortening in the center. Center and right: Axial and sagittal T1W post gadolinium scans showing peripheral (anteriorly) and central (posteriorly) enhancement. Key words: ct mri tumor neoplasia

Brain Diagnosis: Anaplastic Ependymoma