3 month follow up from ETV for aqueductal stenosis. There are postoperative findings related to right transfrontal endoscopic thrid ventriculostomy, with what appears to be a faint jet of cerebrospinal fluid across the ventriculostomy, although no defect is discernible otherwise. There is decreased dilatation of the third and lateral ventricles. However, there is no evidence of aqueductal stenosis. There is deficiency of surrounding cerebral white matter, particularly in the right peritrigonal region. There is interval evolution of the intraventricular hemorrhage, with residual diffuse susceptibility effect along the margins of the ventricular system and choroid plexus. There is also susceptibility effect along the surfaces of some of the posterior fossa structures. There is paucity of cerebral white matter, particularly in the right peritrigonal region. Furthermore, the degree of myelination appears to be delayed. There is mild prominence of the subarachnoid spaces in the frontal convexities. There is a mega cisterna magna. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits are grossly unremarkable.
Postoperative findings related to right transfrontal endoscopic thrid ventriculostomy, with what appears to be a faint jet of cerebrospinal fluid across the ventriculostomy, indicating patency, although no defect is discernible otherwise. Interval decrease in the degree of hydrocephalus and interval evolution of the prior intraventricular hemorrhage with superimposed superficial siderosis in the posterior fossa. In addition, there appears to be periventricular leukomalacia and delayed myelination. 