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. 2026 Aug 19;18(8):e114809. doi: 10.7759/cureus.114809

Figure 5. Immunohistochemical findings of the resected tumor.

Figure 5

(A) Loss of nuclear SMARCB1 (INI1) expression in tumor cells (arrow). Retained nuclear staining in non-neoplastic stromal cells serves as an internal positive control (×10). (B) Focal positivity for epithelial membrane antigen (EMA) in tumor cells (×40). Arrows indicate EMA-positive tumor cells. (C) Strong cytoplasmic positivity for vimentin (×10). (D, E, F) Strong nuclear positivity for estrogen receptor (ER) (Figure 5D), progesterone receptor (PgR) (Figure 5E), and androgen receptor (AR) (Figure 5F) in tumor cells (all at objective magnification ×10). Insets show higher-magnification (×60) views highlighting the representative immunohistochemical staining patterns.