Male, 47 years old, with left temporal tumor. Preoperative planning exam. A large peripherally enhancing, centrally necrotic tumor is evident centered on the inferior aspect of the left anterior temporal lobe. In the axial plane, the enhancing component of the lesion measures up to 50 x 39 mm. Extensive T2 signal abnormality spreads from the lesion into the adjacent left temporal lobe, a portion of the left parietal lobe, the left thalamus and adjacent white matter capsules, and into the left cerebral peduncle. Significant regional mass effect is seen in the form of sulcal effacement, medialization of the left uncus, effacement of the left lateral ventricle, rightward displacement of the brainstem and a generalized midline shift to the right of approximately 6 mm.Subcentimeter foci of T2 hyperintensity within the orbital gyri of the bilateral inferior frontal lobes are nonspecific. A developmental venous anomaly is evident in the right corona radiata. Patchy opacification of the left mastoid air cells seen.
Demonstration of a large peripherally enhancing and centrally necrotic tumor centered on the anterior left temporal lobe.