Craniofacial fibrous dysplasia
Right eye proptosis with right facial swelling
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Expansion of frontal, sphenoid, ethmoid, maxillary bones as well as the mandibular ramus predominantly on right side with a ground glass matrix. There is encroachment of orbit and the sinuses on right side. Proptosis of right eye globe is noted.
Fibrous dysplasia is benign developmental anamoly of mesenchymal precursor of bone with progressive replacement of normal bone marrow by immature fibrous-osseous tissue.
In craniofacial fibrous dysplasia there is unilateral overgrowth of facial bones and calvarium with extended diploid space and outward expansion of outer table.
Differential diagnosis include; juvenile ossifying fibroma, cherubism , renal osteodystrophy.