Medullary Sponge Kidney

National Organization for Rare Disorders, Inc.

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It is possible that the main title of the report Medullary Sponge Kidney is not the name you expected.

Disorder Subdivisions

  • None

General Discussion

Medullary Sponge Kidney is a rare disorder characterized by the formation of cystic malformations in the collecting ducts and the tubular structures within the kidneys (tubules) that collect urine. One or both kidneys may be affected. The initial symptoms of this disorder may include blood in the urine (hematuria), calcium stone formation in the kidneys (nephrolithiasis) or infection. The exact cause of Medullary Sponge Kidney is not known.

Supporting Organizations

American Kidney Fund, Inc.

11921 Rockville Pike
Suite 300
Rockville, MD 20852
Tel: (800)638-8299

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

March of Dimes

1275 Mamaroneck Avenue
White Plains, NY 10605
Tel: (914)997-4488
Fax: (914)997-4763
Email: or
Website: and

NIH/National Kidney and Urologic Diseases Information Clearinghouse

3 Information Way
Bethesda, MD 20892-3580
Fax: (703)738-4929
Tel: (800)891-5390

National Kidney Foundation

30 East 33rd Street
New York, NY 10016
Tel: (212)889-2210
Fax: (212)689-9261
Tel: (800)622-9010

Urology Care Foundation

1000 Corporate Blvd
Linthicum, MD 21090
Tel: (410)689-3700
Fax: (410)689-3896
Tel: (800)828-7866

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 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:  4/28/2008
Copyright  2003 National Organization for Rare Disorders, Inc.