BCL2 and synovial sarcoma: The general pathology of synovial sarcoma is nonspecific and often presents as multi lobulated, accompanied by cysts, bleeding, necrosis, and calcification.[9] Immunohistochemical analysis showed that EMA and BCL-2 were positive, while TLE1 was also a specific differentiation factor between synovial sarcoma and other types of sarcoma.