Reason: h/o oligo s/p resection and RT History: surveillance The patient's vessels right frontal craniotomy for removal of a predominantly nonenhancing right frontal lobe mass known to represent oligodendroglioma. There is contrast enhancement along the surgical margins . Some T2 signal changes present along the brain parenchyma adjacent to the intratumor margins remains.A focus of diffusion restriction is present along the right half of the corpus callosum at the level of the genu.Since the prior exam there postoperative changes have regressed.Normal vascular flow voids are present in the distal carotid and vertebral arteries, the basilar artery and the proximal anterior, middle and posterior cerebral arteries as well as the internal cerebral veins and superior sagittal sinus.The visualized portions of the paranasal sinuses demonstrate mild mucosal thickening. The visualized portions of the mastoid air cells are clear. The visualized portions of the orbits are intact.
1.There is no convincing evidence for recurrent tumor at this time.2.A focus of diffusion restriction present at the right half of the genuine the corpus callosum is present. Is conceivable that this is related to injury.