65-year-old male left shoulder pain, evaluate for rotator cuff tear ROTATOR CUFF: There is intermediate signal intensity within the supraspinatus and infraspinatus tendons, indicating tendinosis. There is also poorly defined, higher signal intensity within the distal supraspinatus and infraspinatus tendons that is suggestive of a network of tearing that appears to disrupt the articular surface and bursal surface fibers of the cuff, indicating full thickness involvement of the tendon although we see no discrete fluid-filled gap. This presumed network of tearing extends from the insertion of the supraspinatus tendon at approximately the 12 o'clock position into the infraspinatus tendon over an AP dimension of approximately 2 cm, and propagates proximally along the infraspinatus tendon as interstitial tearing. There is mild atrophy of the supraspinatus and infraspinatus muscles. The teres minor muscle and tendon appear intact. The subscapularis muscle and tendon appear intact.SUPRASPINATUS OUTLET: Mild osteoarthritis affects the acromioclavicular joint. Small amount of fluid is noted in the subacromial/subdeltoid bursa.GLENOHUMERAL JOINT AND GLENOID LABRUM: The glenohumeral joint alignment is within normal limits. We see no joint effusion. There is perhaps mild fraying of the superior labrum, but otherwise the labrum appears intact given the limitation of this non-arthrogram study.BICEPS TENDON: The tendon of the long head of the biceps appears normal. ADDITIONAL
Heterogeneous signal intensity of the supraspinatus and infraspinatus tendons likely represents a combination of degenerative tendinosis and a poorly-defined network of tearing that extends to the bursal and articular surface of the cuff, with other findings as described above.