FASLG and synovial sarcoma: SS is characterized by central nervous system manifestations (headaches, multiple strokes, cognitive impairment), persistent livedo racemosa, hypertension, cardiac valvulopathy, and less frequent renal and ocular involvement.1, 3 SS is classified according to the presence of Anti-Phospholipid (APL) antibodies in two groups: SSAPL- and SSAPL+.1