 Artifact from the right frontal ventriculostomy catheter partially obscures adjacent structures. Within this limitation, the following observations can be made. There is no restricted diffusion to suggest acute ischemic infarction involving visualized intracranial structures. A right frontal ventriculostomy catheter is present with the tip in the body of the right lateral ventricle. There is no evidence of intracranial mass or hemorrhage. There is redemonstration of multiple punctate foci of high T2 signal within the subcortical and periventricular white matter appearing similar to 4/6/2011. Compared to the 4/12/2013 CT, the lateral ventricles are no longer collapsed but are not significantly enlarged. The basal cisterns remain patent. There is no midline shift or herniation. There is no abnormal intracranial enhancement. The major cerebral flow voids are intact. The midline structures and craniocervical junction are within normal limits.
1.Exam limited by artifact due to right ventriculostomy catheter.2.No evidence of metastases.3.Slight increase in size of lateral ventricles compared to 4/12/2013 without ventriculomegaly, with stable ventriculostomy catheter.4.Nonspecific nonenhancing cerebral white matter signal abnormality appearing similar to 4/6/2011 which can be seen with migraine, demyelinating disease, and microangiopathy.