Abnormal PET scan Note that the examination is limited by motion artifact and lack of intravenous contrast; the exam was performed with the shoulder coil and does not include the chest wall in its entirety.There is diffuse edema within the pectoralis major muscle that extends anteromedially beyond the field-of-view. Edema also extends along the anterior margin of the coracobrachialis and short head of the biceps muscle as well as along the anterior margin of the deltoid although to a lesser degree. Edema is also present within the soft tissues anterior to the coracoid process and adjacent to the distal clavicle. This edema is nonspecific in nature; however there is no focal fluid collection to suggest the presence of abscess.ROTATOR CUFF: There is thickening and intermediate signal of the supraspinatus tendon indicating moderate tendinosis. There is poor definition of the undersurface fibers suggesting fraying with a more focal area of increased signal abnormality at the insertion on the greater tuberosity suspicious for an insertional tear; the bursal surface fibers appear intact. Tendinosis also extends posteriorly to involve the anterior fibers of the infraspinatus. There is moderate to severe fatty atrophy of the supraspinatus muscle with relatively mild atrophy of the infraspinatus muscle and teres minor. The teres minor tendon is intact. There is undersurface tearing of the subscapularis at its insertion on the lesser tuberosity with associated mild fatty atrophy of the muscle.SUPRASPINATUS OUTLET: There is severe osteoarthritis of the acromioclavicular joint but no fluid is present within the subacromial subdeltoid bursa.GLENOHUMERAL JOINT AND GLENOID LABRUM: There is moderate osteoarthritis the glenohumeral joint with degenerative tearing of the glenoid labrum.BICEPS TENDON: Evaluation of the long head of the biceps tendon is limited by motion artifact and the lack of intra-articular contrast. Portions of the tendon are not well seen within the rotator interval which is suspicious for tearing.ADDITIONAL
1. Nonspecific edema of the left pectoralis major muscle and anterior soft tissues of the shoulder joint, the extent of which extends off of the field of view of this study. There is no discrete fluid collection to suggest abscess. If further evaluation is clinically warranted, MRI of the chest wall with and without contrast can be considered.2. Osteoarthritis of the shoulder with rotator cuff tendinosis/tearing and other findings as described above.