It is possible that the main title of the report Arnold-Chiari Malformation is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.
Arnold-Chiari malformation is a rare malformation of the brain that is sometimes, but not always, apparent at birth. It is characterized by abnormalities in the area where the brain and spinal cord meet that cause part of the cerebellum to protrude through the bottom of the skull (foramen magnum) into the spinal canal. This interferes with the flow of cerebral spinal fluid to and from the brain, leading to accumulation of cerebral spinal fluid in the empty spaces of the spine and brain. The portion of the cerebellum that protrudes into the spinal canal can become elongated and is called the "cerebellar tonsils" because it resembles the tonsils.
There are four types of Chiari malformation. Depending on the type, the impact on the affected individual may range from mild to severe.
American Syringomyelia & Chiari Alliance Project
P.O. Box 1586
Longview, TX 75606-1586
March of Dimes Birth Defects Foundation
1275 Mamaroneck Avenue
White Plains, NY 10605
Spina Bifida Association of America
4590 MacArthur Boulevard NW
Washington, DC 20007-4226
870 Market Street
San Francisco, CA 94102
NIH/National Institute of Neurological Disorders and Stroke
P.O. Box 5801
Bethesda, MD 20824
Canadian Syringomyelia Network
69 Penny Crescent
Ontario, L3P 5X7
Tel: (905) 471-8278
Fax: (905) 944-4844
Hydrocephalus Support Group, Inc.
P.O. Box 4236
Chesterfield, MO 63006-4236
Birth Defect Research for Children, Inc.
800 Celebration Ave, Suite 225
Orlando, FL 34747
MUMS National Parent-to-Parent Network
150 Custer Court
Green Bay, WI 54301-1243
World Arnold Chiari Malformation Association
31 Newtown Woods Road
Newtown Square, PA 19073
Genetic and Rare Diseases (GARD) Information Center
PO Box 8126
Gaithersburg, MD 20898-8126
PO Box 241956
Los Angeles, CA 90024
American Association of Neurological Surgeons
5550 Meadowbrook Drive
Rolling Meadows, IL 60008-3852
Internet: http://www.NeurosurgeryToday.org and http://www.aans.org
320 Osprey Court
Wexford, PA 15090
This is an abstract of a report from the National Organization for Rare Disorders, Inc. ® (NORD). A copy of the complete report can be obtained for a small fee by visiting the NORD website. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational treatments (if available), and references from medical literature. For a full-text version of this topic, see http://www.rarediseases.org/search/rdblist.html
The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only. NORD recommends that affected individuals seek the advice or counsel of their own personal physicians.
It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report
This disease entry is based upon medical information available through the date at the end of the topic. Since NORD's resources are limited, it is not possible to keep every entry in the Rare Disease Database completely current and accurate. Please check with the agencies listed in the Resources section for the most current information about this disorder.
For additional information and assistance about rare disorders, please contact the National Organization for Rare Disorders at P.O. Box 1968, Danbury, CT 06813-1968; phone (203) 744-0100; web site www.rarediseases.org or email email@example.com
Last Updated: 4/19/2008
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