Non-ossifying fibroma (NOF) coincidentally seen on shoulder X-ray imaging after trauma
shouler x ray 2 postions
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Shoulder x-ray demonstrates a well circumscribed lucency in the proximal end of the humerus. The margins are sclerotic. No periosteal reaction is present.
Non-ossifying fibromas tend to present in adolescents and young adults ,with well defined lucent lesion with a sclerotic margin.
It is frequently an incidental finding when a radiograph is performed for alternative purposes, such as to assess for a fracture following trauma.
The differential includes :fibrous cortical defect /aneurysmal bone cyst /fibrous dysplasia
- Betsy M, Kupersmith LM, Springfield DS. Metaphyseal fibrous defects. J Am Acad Orthop Surg. 12 (2): 89-95. J Am Acad Orthop Surg (full text) - Pubmed citation