Pilocytic astrocytoma s/p XRT, craniotomy, and shunting. There are stable post-treatment findings in the left frontal lobe with unchanged confluent T2 hyperintensity surrounding the resection cavity. There is no abnormal intraparenchymal enhancement. Left transfrontal and right transoccipital ventricular shunt catheters are in unchanged positions. There is also a residual shunt catheter fragment in the third ventricle. There is T2 hyperintensity associated with the catheter tracks. There is no evidence of intracranial hemorrhage or 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 grossly intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
Stable post-treatment findings without evidence of tumor recurrence.