Low grade glial neural tumor status post third ventriculostomy and biopsy: surveillance. There are postoperative findings related to right transfrontal biopsy of an inferior tectal lesion with interval resolution of enhancement, but persistent susceptibility effect and T2 hyperintensity along the surgical track. There is no significant interval change in the nonenhancing, T2 hyperintense lesion within the tectum. There is no evidence of acute infarct. The ventricles and basal cisterns are unchanged in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
Interval evolution of postoperative findings related to biopsy of a tectal lesion, which has otherwise not significantly changed in size.