The histopathological characteristics of RCC, especially the clear cell type which occupy the RCC, are clear cytoplasm with a high lipid content during histological preparation.[1] In some reports, the MiB-1 labeling index was less than 1%[2,11] or 7%[13] as a cell proliferation marker, and in this case, the cell proliferation rate was comparatively high, with a Ki-67 index of 40%. This evidence concerns the gene MIB1 and renal cell carcinoma.