 There is a solitary, nonenhancing, 4-5 mm focus of T2 hyperintensity within the left paramedian frontal subcortical white matter (series 501, image 21/29) which was present on the comparison study and is unchanged. There is no associated mass effect or susceptibility abnormality. The ventricles and sulci are normal in size. 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. 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. Incidental note is made of a small developmental venous anomaly within the right frontal white matter draining medially.
There is a solitary, nonenhancing, 4-5 mm focus of T2 hyperintensity within the left paramedian frontal subcortical white matter which was present on the comparison study and is unchanged.