 There is irregular thickened peripheral enhancement of the 2.6 x 2.2 cm lesion in the right temporoparietal region white matter. The rim of the lesion is T2 isointense and the central portion of this lesion demonstrates restricted diffusion. There is marked surrounding vasogenic edema with mass effect causing effacement of the right lateral and third ventricle with 9 mm leftward midline shift. The temporal horn of the right lateral ventricle is mildly dilated, suggesting early entrapment. Mild mass effect is present upon the right dorsal lateral aspect of the midbrain. No abnormal susceptibility artifact is present. No additional lesions are identified. No extra-axial fluid collection is evident.Normal flow-voids are demonstrated in the major intracranial vascular structures. The midline structures and craniocervical junction are within normal limits.
1. 2.6 cm right temporoparietal region lesion with a constellation of imaging features most likely representing abscess or neoplasia. Marked associated vasogenic edema and mass effect with stable 9 mm leftward midline shift.2. Limited additional sequences performed for STEALTH protocol.