 There is a CSF intensity structure within the right hemisphere with white matter borders demonstrating mild gliosis, contiguous with the adjacent right lateral ventricle.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. Fluid is present within both mastoid air cells and middle ear cavities. There is no abnormal enhancement within the brain.
There is a CSF intensity structure within the right hemisphere with white matter borders demonstrating mild gliosis, contiguous with the adjacent right lateral ventricle. These findings provide MRI evidence for a porencephalic cyst with associated ex vacuo dilatation of the adjacent right lateral ventricle.