 There is bilateral cystic encephalomalacia, white matter loss, gliosis, and ex vacuo dilatation of the left lateral ventricle atrium and occipital horn. Bilaterally this involves frontal, parietal, and occipital lobes, with the left hemisphere more predominantly affected. There is also associated thinning of the body and splenium of the corpus callosum.There are no findings of hydrocephalus. The more normal-appearing white matter anteriorly appears to have an appropriate myelination pattern. The cerebellar tonsils are in normal position. 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. There are no extraaxial fluid collections or subdural hematomas. Flow voids are present within the major vessels indicating patency. The mastoid air cells are clear.
Bilateral periventricular leukomalacia, left greater than right, with associated thinning of the corpus callosum.