Clinical question: Evaluate for growth of grade ll oligodendroglioma. Signs and symptoms: Grade ll oligodendroglioma. Evaluate for growth. Pre-and post-enhanced brain MRI:Examination redemonstrates a large focus of flair hyperintensity involving the periventricular white matter of left mid temporal lobe and extending posteriorly to surround the trigone of the left lateral ventricle. Internal foci of susceptibility in this region and underlying parenchymal volume loss and ex vacuo dilatation of the trigone of left lateral ventricle remains similar to prior exam. Findings are consistent with post treatment/surgical changes of patient's known left hemispheric oligodendroglioma. Similar to prior exam there is evidence of T1 hyperintensity within the surgical site and along the left aspect of the splenium of corpus callosum consistent with mineralization. There is a very thin linear enhancement along the anterior aspect of this focus of mineralization within the surgical cavity which also remains identical to prior study. Mild periventricular white matter flair hyperintensity of the right hemisphere similar to prior the study and likely treatment related changes.There is no convincing evidence of residual or recurrence of tumor. Further follow-up is recommended.Expected postoperative changes of left frontal parietal craniotomy similar to prior study.
1.Stable postoperative and treatment changes of left hemispheric oligodendroglioma without convincing evidence of residual or recurrence of tumor.2.Further follow-up is recommended.