SSX1 and synovial sarcoma: Her oncologic history is notable for a 7.6 x 5.3 x 2.6 cm right dorsal forearm synovial sarcoma diagnosed in January 2017, at age 49, on core biopsy (FNCLCC Grade 2, 12 mitotic figures per HPF, no necrosis, pancytokeratin positive, negative for MUC4, SOX 10, Desmin, myogenin, and myoD1 with focal weak SMA immunoreactivity, SS18/SSX1 fusion positive).