 There is evidence of Chiari I malformation with 7 mm herniation of the cerebellar tonsils through the foramen magnum.The remainder of the brain demonstrates no abnormal T2/FLAIR signal. Ventricular size is normal. There is no midline shift. Basal cisterns are normal.The visualized cervical spine demonstrates no evidence of syrinx.There are normal vascular flow voids.Flow study demonstrates normal bidirectional flow in the anterior and the posterior aspects of the foramen magnum.
1. Chiari 1 malformation with 7 mm herniation of the cerebellar tonsils.2. Normal ventricular size. No evidence of hydrocephalus. 3. No evidence of syrinx in the imaged cervical spine.4. Normal bidirectional flow in the anterior and the posterior aspects of the foramen magnum.