Age:Young girl-23 years old.
Complaint: Pain in the right shoulder.
Type of examination:X-ray right shoulder.
Findings:
1-Location:Metaphyseal,diaphyseal and seems to be central.
2-Type of bone destruction:Geographic(type 1 b).
2-Type of lesion:Lytic lesion with Multiple septae are visible and outer cortical rim of the bone is maintained, suggesting a benign pathology.
3-Periosteal reaction:No periosteal reaction.
D.D. according to location as follow
-Enchondroma:In long bone usually shows chondral calcification.
-Pyogenic osteomyelitis:Usually shows permeative pattern rather than geographic.
-Simple bone cyst.
-Fibrous dysplasia.
Diagnosis:Fibrous dysplasia.
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