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Bony erosions are noted in the humeral head and glenoid margins. There is full-thickness cartilage loss involving glenohumeral joint with markedly reduced joint space. There is mild posterior subluxation of the humeral head. Edema is seen in rotator cuff muscles.
Bursal fluid collections are noted around the shoulder joint involving subdeltoid and subcoracoid bursae. Bursal collections are seen to displace the glenoid labrum, deltoid and long head of biceps tendons. There is mild to moderate glenohumeral joint effusion with gross capsular thickening. Post-contrast study shows rim enhancement of the bursal collection and thick enhancing glenohumeral joint capsule.