Chiari malformation, esotropia, vision changes. The cerebellar tonsils extend up to 8 mm inferior and display pointed morphologies. In addition, posterior cranial fossa capacity appears to be relatively small. However, there is flow of cerebrospinal fluid across the foramen magnum, albeit perhaps slightly reduced posteriorly. The spinal cord displays normal signal and morphology. The conus medullaris is located at the L1-L2 level. The vertebral column alignment is within normal limits, without evidence of retroflexion of the dens. The vertebral body and disc space heights are preserved. The vertebral bone marrow signal is unremarkable. There is no significant spinal canal stenosis. The paravertebral soft tissues are unremarkable.
Findings suggestive of Chiari type 1 malformation, without associated syringohydromyelia.