Prognostic value of preoperative radiographic perinephric fat features in renal cell carcinoma patients undergoing surgery oleh Yuh-Ren Kuo, Ya-Che Lee, Chung-Teng Wang, Wan-Chen Liu, Chien-Hui Ou, Kun-Che Lin, Tsung-Han Cheng, Hau-Chern Jan, Che-Yuan Hu