Patient with elevated CK and upper extremity weakness, concern for myositis. Please evaluate for inflammatory changes of the muscle. There is increased T2 signal within the muscles of the bilateral supraspinatus, infraspinatus, subscapularis, teres minor, posterior lateral aspect of the deltoid, and pectoralis major muscles. There is also increased T2 signal within the short head of the biceps and the distal triceps muscles bilaterally. There is no muscle atrophy. The underlying bone cortex is intact.There is a non-specific T2 focus within the left humerus proximal metaphysis which may represent a cyst or an enchondroma. There is atelectasis of the lung bases.
Bilateral proximal shoulder, pectoralis major, and distal triceps muscle edema without atrophy suggestive of an inflammatory disorder such as polymyositis/dermatomyositis. 