Immunohistochemical analysis showed diffuse strong expression of STAT6 protein in tumor cells (Figure 1G), CD99, Vimentin, INI1, Calponin, BCOR, and focally positively expressed CK, CD34, SMA, and sporadically expressed TLE1, and did not express CK20, P63, FLI-1, NKX2.2, S100, Myoegnin, WT-1, CyclinD1, SATB2, CD3, CD20, CD43, and Ki-67 value-added index of about 10%. The gene discussed is STAT6; the disease is neoplasm.