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Summary of Immunohistochemical Data
| Fraction of cases with strong positive staining in tumor cells | ||||
|---|---|---|---|---|
| Marker | Conventional RCC | Chromophobe RCC | Oncocytoma | P |
| Vimentin | 17 /20 | 0 /6 | 0 /8 | ≤0.001 |
| CD74 | 13 /20 | 4 /6 | 0 /8 | ≤0.01 |
| Parvalbumin | 5 /20 | 6 /6 | 8 /8 | ≤0.001 |
| Galectin-3 | 13 /20 | 5 /6 | 8 /8 | >0.05* |
*Galectin-3-positive conventional RCCs included 9/10 low-grade tumors versus 4/10 high-grade tumors (P ≤ 0.025)
