National Organization for Rare Disorders, Inc.
It is possible that the main title of the report Mastocytosis 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.
- Mast Cell Leukemia
- Cutaneous Mastocytosis
- Indolent Systemic Mastocytosis
- Mastocytosis with an Associated Hematological Disorder
- Mast Cell Sarcoma/Extracutaneous Mastocytoma
- Aggressive Systemic Mastocytosis
- urticaria pigmentosa
Mastocytosis is a rare disorder characterized by abnormal accumulations of mast cells in skin, bone marrow, and internal organs such as the liver, spleen and lymph nodes. Cases beginning during adulthood tend to involve the inner organs in addition to the skin whereas, during childhood, the condition is often marked by skin manifestations with minimal or no organ involvement. When there is evidence of bone marrow or internal organ involvement, the disease is referred to as "systemic mastocytosis".
Although the majority of cases follow an indolent course, some patients may have evidence of a blood disorder such as a myelodysplastic or myeloproliferative disorder at the time of diagnosis. The course and prognosis of mastocytosis in these patients are determined by this associated hematologic disorder. More aggressive forms of mastocytosis and mast cell leukemias are very rarely encountered.
The Mastocytosis Society, Inc.
PO Box 129
Hastings, NE 68902-0129
NIH/National Institute of Arthritis and Musculoskeletal and Skin Diseases
One AMS Circle
Bethesda, MD 20892-3675
Genetic and Rare Diseases (GARD) Information Center
PO Box 8126
Gaithersburg, MD 20898-8126
CMPD Education Foundation
P.O. Box 4758
Scottsdale, AZ 85261
PO Box 241956
Los Angeles, CA 90024
American Society of Clinical Oncology
2318 Mill Road Suite 800
Alexandria, VA 22314
P.O. Box 895
Mandeville, LA 70470-0895
For a Complete Report
This is an abstract of a report from the National Organization for Rare Disorders (NORD). A copy of the complete report can be downloaded free from the NORD website for registered users. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational therapies (if available), and references from medical literature. For a full-text version of this topic, 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. 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 firstname.lastname@example.org
Last Updated: 1/3/2007
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