 Please note that evaluation is slightly limited by motion artifact.  The lateral and third ventricles are moderately enlarged with abnormal contour and mild surrounding white matter T2 hyperintensities, compatible with periventricular leukomalacia. The 4th ventricle is normal in size. There is prominence of the CSF space adjacent to the right operculum, insula, and inferior frontal lobe, which may represent encephalomalacia from prior injury versus an arachnoid cyst. The sulci are otherwise unremarkable in morphology. The corpus callosum is thin, though fully formed. There is prominence of the CSF spaces anterior to the temporal tips and prominence of the suprasellar and prepontine cisterns. The brainstem is slender, though otherwise unremarkable. Bilateral choroid plexus cysts are noted. The cerebellar vermis is hypoplastic. The cerebellar tonsils are in normal position. There is prominence of the supravermian and retrocerebellar cisterns. There are no masses, mass effect or midline shift. The pituitary gland is normal in size. There is no evidence for intracranial hemorrhage or acute cerebral, brainstem, or cerebellar infarction. No diffusion-weighted abnormalities are identified. There are no extraaxial fluid collections or subdural hematomas. Flow voids are present within the major vessels indicating patency. The paranasal sinuses and mastoid air cells are clear. There is no abnormal enhancement within the brain. SPINE
1. Findings compatible with periventricular leukomalacia. Prominence of the CSF space about the right frontal lobe and operculum may represent encephalomalacia from prior insult versus an arachnoid cyst. 2. Posterior fossa abnormalities, which probably largely reflect congenital developmental abnormalities. 3. No acute intracranial abnormality.4. Normal appearing spine and spinal cord. No evidence of tethered cord.