Fibrous Dysplasia of Bone

**Definition:** A disease of bone marked by thinning of the cortex by fibrous tissue containing bony spicules, producing pain, disability, and gradually increasing deformity. Only one bone may be involved (FIBROUS DYSPLASIA, MONOSTOTIC) or several (FIBROUS DYSPLASIA, POLYOSTOTIC).

**Tree numbers:** - C05.116.099.708.375

**Synonyms:** - Osteitis Fibrosa Disseminata - Jaffe-Lichtenstein Disease