Immunohistochemical results: Vimentin (+), E - 0 adherin (+), PAX - 8 (+), RCC (+), P504S (+), CD10 (+), EMA (+), CAIX (+) a few, CD117 (-), CK7 (-), TFE3 part (-), 34βE12 (-), FH (+), SDHB(+),Ki-67(10%+). Here, KRT7 is linked to renal cell carcinoma.