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- $Unique_ID{BRK03684}
- $Pretitle{}
- $Title{Dysplasia, Fibrous}
- $Subject{Dysplasia Fibrous Monostotic Fibrous Dysplasia Jaffe-Lichenstein
- Disease Polyostotic Fibrous Dysplasia}
- $Volume{}
- $Log{}
-
- Copyright (C) 1991 National Organization for Rare Disorders, Inc.
-
- 839:
- Dysplasia, Fibrous
-
- ** IMPORTANT **
- It is possible that the main title of the article (Fibrous Dysplasia) is
- not the name you expected. Please check the SYNONYM listing to find the
- alternate names and disorder subdivisions covered by this article.
-
- Synonyms
-
- Disorder Subdivisions:
-
- Monostotic Fibrous Dysplasia (Jaffe-Lichenstein Disease)
- Polyostotic Fibrous Dysplasia
-
- General Discussion
-
- ** REMINDER **
- The information contained in the Rare Disease Database is provided for
- educational purposes only. It should not be used for diagnostic or treatment
- purposes. If you wish to obtain more information about this disorder, please
- contact your personal physician and/or the agencies listed in the "Resources"
- section of this report.
-
- Fibrous Dysplasia is a disease of the medullary bone in which benign
- cysts occur as a result of irregular bone development. This disorder may
- involve a single bone (Monostotic Fibrous dysplasia or Jaffe-Lichtenstein
- disease) or affect multiple bones (Polyostotic Fibrous dysplasia or McCune
- Albright syndrome).
-
- Fibrous Dysplasia first appears during childhood and the bone lesions
- usually stop developing at puberty. These lesions may be painful, deforming
- and widespread. The bones most often affected are the ribs, skull, facial
- bones, femur and tibia of the leg.
-
- Symptoms
-
- The symptoms of Monostotic Fibrous Dysplasia usually develop during childhood
- and are detected by a skeletal x-ray. Individuals with this disorder may
- have lesions (cysts) of the craniofacial bones, vertebrae or long bones (such
- as the femur and tibia). There may be a loss of density at the location
- where the bone is being replaced by fibrous tissue and this loss is usually
- detected by an x-ray. The tissue around the affected bone (cortical walls)
- may atrophy and the bone marrow cavity (medullary cavity) may expand. There
- is never more than a single bone affected with this form (monostotic) of
- Fibrous Dysplasia.
-
- Individuals with Polyostotic Fibrous Dysplasia may also have McCune
- Albright Syndrome which is characterized by signs of early sexual development
- (precocious puberty), skin pigmentation (cafe' au lait spots) and multiple
- fibrous bone lesions. The bone lesions of Polyostotic Fibrous Dysplasia are
- usually present during childhood and may involve a large percentage of the
- skeleton. A skeletal x-ray is used to detect this disorder often as a result
- of complaints by the patient of bone and joint pain or repeated fractures.
- There may be femur deformity and a discrepancy in leg length (known as
- "shepherds-crook") as well as facial disfigurement.
-
- Causes
-
- The exact cause of Fibrous Dysplasia is not known. Most cases seem to occur
- sporadically. Some scientists have reported that they suspect that this
- disorder may be inherited but this has not yet been proven.
-
- Affected Population
-
- Fibrous Dysplasia seems to affect both males and females equally. About
- fifty percent of the females with Polyostotic Fibrous Dysplasia have McCune
- Albright Syndrome with early sexual development.
-
- Therapies: Standard
-
- Fibrous Dysplasia may be treated with orthopedic procedures. Packing with
- bone chips and curettage (scraping) of the lesions may be used although it
- has been found that in patients under 18 years of age this procedure (when
- used on lower extremities) is usually unsatisfactory. The same procedure
- used on patients over 18 years of age may have satisfactory results.
- Internal fixation (stabilizing the bone with surgical wires, screws, pins or
- plates) may be used on lesions in the lower extremities of patients under 18
- years of age.
-
- In cases of McCune Albright Syndrome the drug medroxyprogesterone may be
- used to prevent early sexual development.
-
- Therapies: Investigational
-
- There are several experimental drugs being tested for treatment of McCune
- Albright Syndrome which is sometimes associated with Polyostotic Fibrous
- Dysplasia. To learn about these drugs see the "Investigational Therapies"
- section of the McCune-Albright Syndrome entry on the Rare Disease Database.
-
- This disease entry is based upon medical information available through
- May 1991. 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.
-
- Resources
-
- For more information on Fibrous Dysplasia, please contact:
-
- National Organization for Rare Disorders
- P.O. Box 8923
- New Fairfield, CT 06812-1783
- (203) 746-6518
-
- International Center for Skeletal Dysplasia
- St. Joseph Hospital
- 7620 York Road
- Towson, MD 21204
- (301) 337-1250
-
- The National Arthritis and Musculoskeletal and Skin Diseases (NIAMS)
- Information Clearinghouse
- Box AMS
- Bethesda, MD 20892
- (301) 495-4484
-
- References
-
- INTERNAL MEDICINE, 2nd Ed.: Jay H. Stein, ed.-in-chief; Little, Brown
- and Co., 1987. Pp. 2117-8.
-
- CECIL TEXTBOOK OF MEDICINE, 18th Ed.: James B. Wyngaarden, and Lloyd H.
- Smith, Jr., Editors; W.B. Saunders Co., 1988. Pp. 1519-20.
-
- BIRTH DEFECTS ENCYCLOPEDIA, Mary Louise Buyse, M.D. Ed; Blackwell
- Scientific Publications., 1990. Pp. 738-39.
-
- FIBROUS DYSPLASIA. AN ANALYSIS OF OPTIONS FOR TREATMENT: R.B.
- Stephenson, et al.; J Bone Joint Surg (Am); (Mar 1987, issue 69(3). Pp. 400-
- 9.
- FIBROUS DYSPLASIA OF BONE: B.E. Stompro, et al.; Am Fam Physicians; (Mar
- 1989, issue 39(3)). Pp. 179-84.
-
-