Tenosynovial chondromatosis of the shoulder.

Two cases of tenosynovial chondromatosis of the shoulder are presented, the literature on this rare lesion is reviewed, and the differential diagnosis, diagnosis, and treatment are discussed. Synovial chondromatosis is a benign monoarticular lesion. It may also be found in tendon sheaths de novo and secondary to local extension. The two cases presented show tenosynovial chondromatosis involving both the shoulder joint and extension into the bicipital groove.