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fibrous dysplasia
A benign bone disorder where normal bone is replaced by fibrous tissue and immature bone.
Full Definition
A developmental bone disorder characterized by the replacement of normal bone and marrow with fibrous tissue containing irregular trabeculae of woven bone. In the craniofacial region, fibrous dysplasia can cause facial asymmetry, malocclusion, and bone expansion. The condition may be monostotic (single bone) or polyostotic (multiple bones). Treatment is typically conservative with surgical intervention reserved for functional or severe aesthetic concerns.
Usage
Usage note: Distinguish from similar-appearing lesions like ossifying fibroma based on radiographic and histologic features.
In Context
- "The patient's facial asymmetry was attributed to monostotic fibrous dysplasia of the maxilla." — Diagnostic workup report
- "Conservative management was recommended for the fibrous dysplasia given its stable presentation." — Treatment planning note
Contrasted with
normal bone architecture
Don't confuse with
ossifying fibroma
cemento-ossifying fibroma