FOLH1 and synovial sarcoma: Regarding all represented entities, the highest percentage of a strong PSMA expression (labelling index = 2) could be found in the neovasculature of pleomorphic rhabdomyosarcomas (40%), followed by synovial sarcomas (37.50%), malignant peripheral nerve sheath tumors (19.05%), undifferentiated pleomorphic sarcomas (18.19%), alveolar rhabdomyosarcomas (12.50%), leiomyosarcomas (10.61%), angiosarcomas of the soft tissue (10.34%) and pleomorphic liposarcomas (10%).