Houston Methodist. Leading Medicine

Neck FAQ

Question:

My niece was just diagnosed with a problem called chiari malformation. Is this something I should have my children tested for?

Answer:

Arnold-Chiari refers to the physician who first described this condition. Children born with a defect of the spinal cord called myelomeningocele or spina bifida often have an Arnold-Chiari malformation.

In Arnold-Chiari malformation, the lower part of the cerebellum protrudes from its normal location in the back of the head. The word cerebellum means little brain.

It is a separate, smaller part of the brain located at the base of the skull just above the cervical spine. It slides down into the cervical or neck portion of the spinal canal.

There may be no symptoms with this condition, so the problem remains hidden. An MRI of the cervical (neck) spine would show the abnormal anatomy. But MRIs are expensive. They are not done routinely just to see if there's a problem unless there's a reason to do so.

It is not likely that the cousins of a child with a Chiari malformation (your children) would be affected as well. However, you should bring this piece of family history to your pediatrician's attention, and seek his or her advice.

Most likely, no testing will be recommended unless your child develops some kind of neurologic signs or symptoms. Satoru Shimizu, MD, et al. Flat Arrangement of the Cauda Equina in Chiari Malformation. In Journal of Neurosurgery:Spine. April 2007. Vol. 6. No. 4. Pp. 373.

*Disclaimer:* The information contained herein is compiled from a variety of sources. It may not be complete or timely. It does not cover all diseases, physical conditions, ailments or treatments. The information should NOT be used in place of visit with your healthcare provider, nor should you disregard the advice of your health care provider because of any information you read in this topic.
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