As in our case, all 7 of 7 cases were monophasic SS, 3 of 7 cases were small less than 1.5 cm lesions, 2 of 7 had microscopic calcifications and 3 of 3 tested cases demonstrated the gene fusion product SS18-SSX1, similar to that in our case. This evidence concerns the gene SSX1 and synovial sarcoma.