“…In the scant case reports, fistulization and acromioclavicular cyst recurrence are the main complications after needle aspiration, 4,5,8,9 so this practice is not recommended unless there is clinical suspicion of an infectious process. 10 The recommended treatment of these cysts is surgical removal of the tumor; the physician should be aware that, if case of a rotator cuff tear, repairs must be made before or during surgery. 2,3,5,8,9 Sometimes, faced with a relapse, intervention should include removal of the distal clavicle.…”