IHC analysis revealed that the tumor cells were diffusely positive for vimentin, CD56, CD10, CAM5.2, AE1/AE3, estrogen receptor (ER), progesterone receptor (PgR) and androgen receptor (AR), STAT6 (cytoplasmic), and focally positive for S-100, E-cadherin, cyclinD1 and ATRX, whereas they were negative for chromogranin A, synaptophysin, INSM-1, smooth muscle antibody, c-kit, calretinin, epithelial membrane antigen, inhibin, SALL4, AFP, Glypican-3, p53, p40, CD34, bcl-10, SF-1, PAX-8, CDX2, CD99, MelanA, CEA, CA19-9, and CA125 (Figure 2). Here, ESR1 is linked to neoplasm.