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Figure 1: Immunohistochemical findings of the primary breast tumor. (a) Grade 3, invasive ductal carcinoma, ductal, and solid pattern (HE × 200) with neuroendocrine differentiation (b) (positive synaptophysin staining × 200) (c) 95% positive estrogen receptor staining (ER × 200) (d) Negative progesterone receptor staining (PR × 200) (e) Negative Her-2 staining (×200) (f) 60% ki 67 proliferation index (×200)

Figure 1: Immunohistochemical findings of the primary breast tumor. (a) Grade 3, invasive ductal carcinoma, ductal, and solid pattern (HE × 200) with neuroendocrine differentiation (b) (positive synaptophysin staining × 200) (c) 95% positive estrogen receptor staining (ER × 200) (d) Negative progesterone receptor staining (PR × 200) (e) Negative Her-2 staining (×200) (f) 60% ki 67 proliferation index (×200)