 Redemonstrated are prominent subarachnoid CSF spaces, more prominently noted over the frontal lobes and the anterior falx in the supine position.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. Myelination is appropriate. There are no extraaxial fluid collections or subdural hematomas. Flow voids are present within the major vessels indicating patency. Fluid is present within both middle ear cavities and mastoid air cells. There is no abnormal enhancement within the brain.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, masses, or abnormal enhancement 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.Redemonstrated is benign enlargement of the subarachnoid spaces which usually resolves by two years of age.2.Fluid is present within both middle ear cavities and mastoid air cells.3.There are no MRI findings to explain the patient's symptoms.