 As demonstrated previously, the cerebellar tonsils have a somewhat pointed configuration with the right tonsil extending 8 mm inferior to the foramen magnum and the left tonsil extends 3 mm inferior to the foramen magnum. As before, biphasic CSF flow is demonstrated posteriorly at the level of the cerebellar tonsils and foramen magnum.Redemonstrated is a large intramedullary septated fluid cavity that begins at the cervico-medullary junction which begins to taper at the T7-T8 level before terminating at the T9-T10 level. It is unchanged in size, again measuring up to 8 x 10 mm at the T4 level. There is surrounding patchy high T2 signal in the spinal cord which appears unchanged. The vertebral column alignment is within normal limits. The vertebral body and disc space heights are preserved. The vertebral bone marrow signal is unremarkable. There is no significant spinal canal or foraminal stenosis. The paravertebral soft tissues are unremarkable.
1.Stable Chiari malformation.2.Unchanged syringomyelia extending from the craniocervical junction to the T9-10 level.