Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Midsagittal T1-weighted MR images demonstrating the posterior fossa and cervical spine before (A) and after (B) reexploration craniocervical decompression. After reexploration (B), the subarachnoid space at the foramen magnum expanded (arrows), the tips of the cerebellar tonsils rounded, and the syrinx diameter decreased dramatically.
