73 old female with history of breast cancer and left shoulder pain, concerning lesion seen on recent shoulder radiograph. The apparent lucent lesion seen on the prior radiographs does not have a correlate on MRI and may simply reflect osteopenia/osteoporosis. We see no findings to suggest metastatic disease to the shoulder. Moderate osteoarthritis affects the glenohumeral joint with subchondral cysts and edema within the glenoid and additional cysts in the humerus. There is a small joint effusion and synovitis of the glenohumeral joint. There is mild rotator cuff tendinosis with perhaps mild undersurface fraying of the supraspinatus tendon, but we see no frank fluid filled rotator cuff tear. Small cysts are noted in the greater tuberosity, which are most likely degenerative in etiology. There is an os acromiale and mild osteoarthritis of the acromioclavicular joint. No frank fluid is noted within the subacromial/subdeltoid bursa. There is thickening and increased signal intensity of the proximal tendon of the long head of the biceps indicating severe tendinosis.
Glenohumeral joint osteoarthritis and other findings as above. We see no specific findings to suggest metastatic disease to bone.