Figure 1. The FH-dRCC immunohistochemistry and the preliminary results of the ability of immunohistochemistry (FH, 2-SC, FH/2-SC) to diagnose FH-dRCC. (A) HE staining, 200×; (B) FH negative staining 200×; (C) 2-SC positive staining in cytoplasm/nucleus; (D) Sensitivity; (E) Specificity; (F) Positive Predictive Value; (G) Negative Predictive Value.