Presentation
Shoulder pain.
Patient Data
Age: 45 years
Gender: Male
From the case:
Primary synovial osteochondromatosis
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AP internal rotation
There is a large calcific mass surrounding the glenohumeral joint, made up of numerous uniformly sized densities which each have a cortical rim. There are multiple associated pressure erosions on the surrounding osseous structures, most notably the humeral head and surgical neck of the humerus.
Case Discussion
This is an extreme example of primary synovial osteochondromatosis. A differential consideration in this case would be tumoral calcinosis.
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