Fibrous Dysplasia – DNB ENT Theory Question June 2015
Estimated reading time: 2 min
June 2015 – 5 – a) Pathology & Types of Fibrous Dysplasia. b) Outline its management. (3+4+3)
Fibrous dysplasia:
- Genetically based tumor-like condition (not a true neoplasm).
- Normal medullary bone is replaced with fibro-osseous tissue.
- Commonly diagnosed within the first two decades of life.
- Self-limiting process and ceasing when affected bone reaches maximum growth and maturation.
- Reported cases of sarcomatous transformation.
- Juvenile variant:
o Rapidly destructive, aggressive, destroys teeth, refractory to treatment.

Types:
- Monostotic: 70-80%
 One bone involved.
 Most common form. - Polyostotic: 20-25 %
 More than one bone involved. - Disseminated (McCune-Albright Syndrome):
 Polyostotic fibrous dysplasia, precocious puberty,
abnormal skin pigmented lesions (caft-au-lait).
Clinical picture:
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