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The spinal accessory nerve was traced in the right lateral cervical triangle region. The nerve is encased by the hypoechoic scar region. There is edema of nerve with loss of normal fascicular pattern at the site of involvement. The nerve segment caudal to scar also shows mild edema. There are few subcentimeter sized ovoid nodes locally which are normal nodes. There is no fatty infiltration or atrophy of affected trapezius muscle in comparison to the contralateral side.
The rotator cuff is intact with normal echopattern. There is no effusion in the subacromial-subdeltoid bursa or glenohumeral joint.