A variety of fluid and fluid-like containing structures can be seen on routine MR imaging of the shoulder including bursal effusions and cystic lesions often in association with rotator cuff tears and impingement. Given its high soft tissue contrast and multiplanar imaging capabilities, MR imaging is the modality of choice in quantifying size, confirming fluid composition, assessing anatomical relationship to the glenohumeral joint, and determining the presence/absence of accompanying intra-articular abnormalities in association with the bursal and juxta-articular cystic findings.
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