4-year-old male with history of pilocytic astrocytoma status post laser ablation, surveillance imaging. Redemonstrated are postoperative findings related to laser ablation with no interval change in size of a tectal plate mass, as measured with T2 technique, measuring approximately 16 x 20 mm in the same location utilized previously. However, previously demonstrated more diffuse enhancement centrally within the mass has decreased. There is no evidence of acute intracranial hemorrhage or acute infarct. There is a right transfrontal ventricular catheter that terminates adjacent to the right caudate nucleus, unchanged in position. Also redemonstrated are postoperative findings related to endoscopic third ventriculostomy, with an apparent jet of cerebrospinal fluid into the third ventricle, unchanged in appearance. Nevertheless, the third and lateral ventricles remain enlarged, unchanged in extent. There is no midline shift or herniation. There is a left cerebellar hemisphere developmental venous anomaly. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues appear unchanged.
1.Redemonstrated are postoperative findings related to laser ablation with no interval change in size of a tectal plate mass, as measured with T2 technique, measuring approximately 16 x 20 mm in the same location utilized previously. However, previously demonstrated more diffuse enhancement centrally within the mass has decreased.2.Stable findings related to endoscopic third ventriculostomy, with an apparent jet of cerebrospinal fluid into the third ventricle. 3.Stable third and lateral ventricular enlargement.