Chiari Malformation
Chiari malformation is a condition where part of the cerebellum (at the base of the brain) sits lower than normal and extends into the spinal canal.
When to get help quickly: Sudden severe headache, fainting, swallowing problems, or rapidly worsening weakness need prompt review.
Common symptoms
Many people have no symptoms. Others get headaches that get worse with coughing or straining, neck pain, balance or coordination problems, swallowing difficulty, or numbness and weakness in the arms or legs.
When imaging helps
Imaging confirms the diagnosis, measures how much of the cerebellum has descended, and looks for related findings such as syringomyelia inside the spinal cord.
What radiology does
MRI of the brain and cervical spine is the best test; it shows the position of the cerebellum, CSF flow, and any associated changes.
What usually happens next
Many people need only monitoring. Those with significant symptoms or syringomyelia may benefit from neurosurgical decompression.
Seen this on your report?
Your doctor or the radiologist who wrote it can tell you what it means for you.