52-year-old female with severe left shoulder pain. Rule out rotator cuff tear. ROTATOR CUFF: The supraspinatus muscle and tendon appear intact. There is a full-thickness insertional tear of the infraspinatus tendon without retraction measuring approximately 7 mm in the AP dimension. There is mild edema within the adjacent tendinous fibers, but the muscle appears intact. The teres minor muscle and tendon appear intact. The subscapularis muscle and tendon appear intact.SUPRASPINATUS OUTLET: The acromioclavicular joint is normal for age. There is a trace amount of fluid within the subacromial/subdeltoid bursa likely related to the aforementioned focal rotator cuff tear.GLENOHUMERAL JOINT AND GLENOID LABRUM: There is no glenohumeral joint effusion. However, there is a lobulated and septated collection of fluid signal intensity within the spinoglenoid notch extending into the suprascapular notch. There appears to be chronic pressure erosion of the underlying posterior glenoid. We suspect that this represents a paralabral cyst as there appears to be a tear of the posterior superior glenoid labrum as well. We see no frank atrophy of the infraspinatus at this time.BICEPS TENDON: The tendon long head of the biceps appears intact
1. Focal full-thickness insertional tear of the infraspinatus without retraction.2. Paralabral cyst within the spinoglenoid notch associated with a tear of the posterior superior glenoid labrum.