64-year-old female presents with left shoulder pain. ROTATOR CUFF: There is thickening and generalized increased signal intensity of the supraspinatus tendon indicating moderate tendinosis. Anteriorly within the tendon, there is an insertional tear that disrupts the bursal surface fibers. The tear involves just over 50% of the tendon and is approximately 1 cm in AP dimension. The supraspinatus muscle appears intact. The aforementioned tendinosis extends posteriorly to involve the infraspinatus tendon. There are small cysts in the underlying humeral head, however, no discrete infraspinatus tendon tear is identified. There is mild fatty atrophy along the myotendinous junction, but otherwise the infraspinatus muscle appears normal. The teres minor tendon and muscle appear normal. There is mild increased signal intensity in the distal subscapular tendon which may reflect mild tendinosis, however the muscle appears normal.SUPRASPINATUS OUTLET: Moderate osteoarthritis affects the acromioclavicular joint with a small collection of fluid signal intensity dorsal to the articulation which may reflect a cyst. There is a small amount of fluid within the subdeltoid bursa, likely reflecting the aforementioned rotator cuff tear. The coracohumeral ligament appears slightly thickened, however, the patient's arm is internally rotated and therefore the significance of this is uncertain.GLENOHUMERAL JOINT AND GLENOID LABRUM: Mild osteoarthritis affects the glenohumeral joint. There is intermediate signal intensity within the superior labrum suggesting degeneration with a small lobular collection of fluid signal intensity anteriorly that may represent a paralabral cyst. The remainder of the labrum appears normal for age. There is a small amount of fluid in the joint containing intermediate signal intensity suggesting mild synovitis. There is also fluid in the subcoracoid bursa containing small foci of intermediate signal intensity suggesting a bursitis and internal debris.BICEPS TENDON: There is thickening and increased signal intensity in the tendon of the long head of the biceps at its transition from the rotator interval to the intertubercular groove indicating moderate tendinosis.
1. Rotator cuff tendinosis and tearing as described above.2. Osteoarthritis and other findings as above.