New posterior shoulder mass, history of myeloma. Left posterior shoulder pain. Markers placed along the superior and lateral aspect of the shoulder presumably denote the margins of a palpable mass. Between and deep to the markers, there is a subcutaneous mass which predominantly follows fat signal intensity on all sequences with thin septations consistent with a lipoma. There is no enhancement of this mass. The mass measures approximately 5.5 x 1.5 x 4.0 cm, although accurate measurements are difficult due to lack of inherent contrast with the surrounding tissues.Multiple foci of signal abnormality within the visualized proximal humerus and scapula, many of which enhance, are compatible with stated history of multiple myeloma.The rotator cuff muscles and tendons appear normal for age. Mild osteoarthritis affects the acromioclavicular joint. There is trace fluid within the subacromial bursa, which is probably of no clinical significance. There is a small amount of fluid in the glenohumeral joint but no frank effusion. Please note this study was not detailed for evaluation of the labrum, but we see no gross abnormality. The long head of the biceps tendon appears normal.
1. Lipoma.2. Findings compatible with multiple myeloma.3. Degenerative changes as above. 