Specifically, vimentin (8/12 cases), 34βE12 (1/12 cases), CA125 (0/12 cases), ER (1/12 cases), and PgR (1/12 cases) are positive in renal cell carcinoma, whereas vimentin (1/10 cases), 34βE12 (10/10 cases), CA125 (8/10 cases), ER (7/10 cases), and PgR (6/10 cases) tend to be positive in ovarian clear cell carcinoma.24 In our cases, the histopathological features characteristic of clear cell renal cell carcinoma were observed, making the diagnosis possible. This evidence concerns the gene PGR and renal cell carcinoma.