68-year-old female with left deltoid pain and throbbing after intramuscular flu shot on 12/14. The imaged musculature of the right shoulder and arm is normal in appearance. Specifically, the deltoid muscle is unremarkable. Note is made of irregular enhancing synovium about the glenohumeral joint suggestive of synovitis. There is circumferential fluid within the tendon sheath of the long head of the biceps with associated irregular enhancement, indicating a mild tenosynovitis. Moderate osteoarthritic changes affect the left glenohumeral joint with apparent near full-thickness to full-thickness articular cartilage degeneration. There are multiple small erosions affecting the humeral head. The glenohumeral joint alignment is anatomic. No focal fluid collection to suggest abscess formation.
1. Erosions of the humeral head and glenohumeral joint synovitis, which are nonspecific but may be related to the patient's history of rheumatoid arthritis. 2. Tenosynovitis involving the long head of the biceps tendon. 3 .The deltoid musculature is normal in appearance, as clinically questioned.