Recurrent anaplastic oligodendroglioma, MRI needed for treatment planning and protocol. There are postoperative findings related to left temporoparietal craniotomy. There has been interval increase in size of multiple heterogeneous areas of nodular enhancement along the margins of the surgical cavity, the largest of which measures up to approximately 55 mm along the posteromedial margin of the resection cavity, previously up to 45 mm. There is associated confluent T2 hyperintensity in the surrounding brain parenchyma. There is also nonspecific mild scattered regional sulcal enhancement. There is no evidence of acute infarct. There is partial effacement of the left lateral ventricle trigone and mild dilatation of the left temporal horn. However, there is no midline shift or herniation. The major cerebral flow voids are intact. The orbits are grossly unremarkable.
Interval increase in size of the extensive foci of tumor recurrence along the margins of the surgical cavity with suggestion of left temporal horn entrapment.