Possible AC joint separation ROTATOR CUFF: No significant abnormality noted.AC JOINT: There are multiple erosions and subchondral cysts at the acromioclavicular joint, predominantly along the articular surface, which are accentuated by the addition of intra-articular contrast. No fracture or malalignment is present. No specific features of infection are evident.GLENOHUMERAL JOINT AND GLENOID LABRUM: No significant abnormality noted.BICEPS TENDON: No significant abnormality noted. ADDITIONAL
Multiple erosions and subchondral cysts at the acromioclavicular joint which are non-specific in appearance though possibly a combination of degenerative and post-traumatic. Weight lifting may produce similar changes. An inflammatory arthropathy can also be considered and correlation with imaging of additional joints may be helpful. 