Newly diagnosed right sided non enhancing brain lesion: preoperative planning for biopsy. There is mildly expansile infiltrative high T2 signal within multiple lobes of the right cerebral hemisphere. There is partial effacement of the right lateral ventricle and 10 mm of midline shift to the left. There also appears to be a 10 mm wide focus encephalomalacia in the anterior left gyrus rectus. There are skin fiducial markers.
Preoperative planning MRI demonstrates an infiltrative neoplasm involving multiple lobes of the right cerebral hemisphere, which is suggestive of gliomatosis cerebri.