“…The expression of TTF-1, S-100, calmodulin (CAM), CD34, desmin, AE1/AE3, EMA, lung cancer markers (TTF-1 and napsin A), myogenin, neuroendocrine markers (synaptophysin and pheochromogranin A), smooth muscle actin (SMA), signal transduction and transcription activator negative 6 (STAT6), Sox10, calretinin, tumor markers (CD3, CD20, and CD45), synaptophysin, pheochromogranin, P40, FLI-1, Melan A, WT-1, P63, NSE, CDX-2 and vascular tumor markers (TEMS), PD-1 (programmed cell death protein 1), PD-L1(programmed death ligand 1), E-cadherin, β-catenin, and p53 was almost negative, and the proliferation index of Ki-67 in tumor cells exceeded 90%. 5,11,[32][33][34][35][36][37][38] Its cytogenetic marker is T (X; 18) (p11; Q11) chromosomal translocation. 23 The SYT-SSX fusion gene can be detected by reverse transcriptase polymerase chain reaction (RT-PCR) or fluorescence in situ hybridization (FISH).…”