 There is a small collection of T2 hyperintense foci within right periventricular white matter.Just superolateral to the left frontal horn is a 4 mm, ovoid, well-circumscribed focus of CSF intensity without mass effect, which nulls completely on FLAIR technique. This appearance is consistent with a connatal cyst which is of no clinical significance.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 mastoid air cells are clear.Coronal images of the temporal lobes demonstrate the temporal horns, hippocampal formations and parahippocampal gyri to be normal in size and symmetric bilaterally without signal abnormalities or masses identified within the medial temporal lobes on either side. There is no evidence of mesial temporal sclerosis and there are no foci of heterotopic gray matter.
1.There is a small collection of T2 hyperintense foci within right periventricular white matter. This is nonspecific in appearance, however for a patient of 9 years this may reflect mild residua of periventricular leukomalacia. Alternatively, it may represent small vessel disease or the sequelae of some other prior gliotic event. Other etiologies are felt to be less likely.2.Just superolateral to the left frontal horn is a 4 mm, ovoid, well-circumscribed focus of CSF intensity without mass effect, which nulls completely on FLAIR technique. This appearance is consistent with a connatal cyst which is of no clinical significance.