46 years, Female, dull right-sided headaches for the past several months There are two right-sided ventriculostomy catheters, one of which terminates near the foramen of Monro on the left and the other which courses through the lateral ventricles and terminates near the left thalamus. The bilateral lateral ventricles are dilated as is the third ventricle. There is mild nonspecific FLAIR hyperintensity surrounding the ventricles. Note no prior studies are available for comparison.No intracranial mass or mass effect. There is susceptibility artifact related to the ventricular shunts which limits evaluation of the parenchyma. There is however no obvious evidence of ischemia or intraparenchymal hemorrhage. There is gliosis along the course of the ventriculostomy catheters. There is an extra axial collection along the posterior left cerebral convexity deep to craniotomy at this level. No significant associated mass effect. There is severe diffuse thinning involving the corpus callosum. No findings to suggest intracranial mass, midline shift, or herniation.Paranasal sinuses and mastoid air cells are clear. Orbits are grossly unremarkable. Extracranial soft tissues are grossly unremarkable.
1. There is dilatation involving the bilateral lateral ventricles and third ventricles with two right-sided ventriculostomy catheters as described above. Would suggest obtaining prior studies for comparison. No evidence of infarct, hemorrhage, or intracranial mass. 2. Diffuse thinning of the corpus callosum which may be secondary to chronic hydrocephalus.