Question: This is my MRI report...Please, can you tell me what all of this means...in layman's terms? MRI OF BRAIN AND FURTHER SEQUENCES W/WO CON HISTORY: Increasing frequency of headaches. New onset vertigo. Technique: MR of the brain without and with contrast. Dedicated imaging of the internal auditory canals was performed. 20 cc IV Magnevist was administered to the patient Comparison: None. FINDINGS: Bilateral internal acoustic canal, 7th and 8th nerve complex, cerebellopontine angle cistern and the brainstem are unremarkable. A branch of the left anterior inferior cerebellar artery approaches but does not appear to enter the orifice of the left internal auditory canal (type I). A branch of the right anterior-inferior cerebral are artery enters the medial aspect of the right internal auditory canal (type II). No cranial nerve impingement is visible. There are a few small juxtacortical and deep white matter FLAIR hyperintensities in the right frontal lobe. There is no acute hemorrhage. There is no evidence to suggest acute infarction. There is no mass effect or midline shift. There is no abnormal focus of enhancement. Ventricles are symmetric and normal in size. The cerebellar tonsils are normal in position. There is a mucus retention cyst in the right sphenoid sinus. There is mild mucosal thickening in the bilateral maxillary sinuses. The remaining visualized paranasal sinuses are clear. There is a partially visualized 1.2 cm T1 hypointense, T2 hyperintense structure in the lower left mastoid. The right mastoid air cells are clear. Impression IMPRESSION: 1. No vestibular schwannoma or cerebellopontine angle mass seen. 2. Crossing branches of the bilateral anterior inferior cerebellar arteries, which some believe may be symptomatic in some patients. 3. Nonspecific white matter signal abnormalities the right frontal lobe. Differential considerations include infectious and/or inflammatory white matter disease including chronic small vessel ischemia, multiple sclerosis, Lyme disease, small vessel vasculitides such as Lupus, and migraines, among other etiologies. 4. Partially visualized likely fluid in the lower left mastoid, probably representing mastoiditis.