Dandy Walker Malformation

National Organization for Rare Disorders, Inc.

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It is possible that the main title of the report Dandy Walker Malformation is not the name you expected.

Disorder Subdivisions

  • None

General Discussion

Dandy-Walker malformation (DWM) is a brain malformation that occurs during embryonic development of the cerebellum and 4th ventricle. The cerebellum is the area of the brain that helps coordinate movement, and is also involved with cognition and behavior. The 4th ventricle is a space around the cerebellum that channels fluid from inside to around the outside of the brain. DWM is characterized by underdevelopment (small size and abnormal position) of the middle part of the cerebellum known as the cerebellar vermis, cystic enlargement of the 4th ventricle and enlargement of the base of the skull (posterior fossa). DWM is sometimes (20-80%) associated with hydrocephalus, in which blockage of the normal flow of spinal fluid leads to excessive amounts of fluid accumulating in and around the brain. This leads to abnormally high pressure within the skull and swelling of the head, and can lead to neurological impairment.

Supporting Organizations

Dandy-Walker Alliance, Inc.

10325 Kensington Pkwy
Suite 384
Kensington, MD 20895
Tel: (877)326-3992
Email: comments@dandy-walker.org
Website: http://www.dandy-walker.org

Dandy-Walker Syndrome Network

5030 142nd Path West
Apple Valley, MN 55124
Tel: (612)423-4008

Genetic and Rare Diseases (GARD) Information Center

PO Box 8126
Gaithersburg, MD 20898-8126
Tel: (301)251-4925
Fax: (301)251-4911
Tel: (888)205-2311
Website: http://rarediseases.info.nih.gov/GARD/

Hydrocephalus Association

4340 East West Highway Ste 950
Bethesda, MD 20814
Tel: (301)202-3811
Fax: (301)202-3813
Tel: (888)598-3789
Email: info@hydroassoc.org
Website: http://www.hydroassoc.org

Hydrocephalus Support Group, Inc.

1933 Mistflower Glen Ct.
Chesterfield, MO 63005-4236
Tel: (636)532-8228
Fax: (314)251-5871
Email: hydrob@earthlink.net

NIH/National Institute of Neurological Disorders and Stroke

P.O. Box 5801
Bethesda, MD 20824
Tel: (301)496-5751
Fax: (301)402-2186
Tel: (800)352-9424
Website: http://www.ninds.nih.gov/

National Hydrocephalus Foundation

12413 Centralia Rd.
Lakewood, CA 90715-1653
Tel: (562)924-6666
Fax: (562)924-6666
Tel: (888)857-3434
Email: nhf@earthlink.net
Website: http://www.nhfonline.org

For a Complete Report

This is an abstract of a report from the National Organization for Rare Disorders (NORD). For a full-text version of this report, go to www.rarediseases.org and click on Rare Disease Database under "Rare Disease Information".

The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only.

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.

Last Updated:  2/12/2008
Copyright  2008 National Organization for Rare Disorders, Inc.