All cases were followed up, ranging from 6 to 17 months. 7 cases died in postoperative relapse or metastasis. 1 case is still alive but has pulmonary metastasis 9 months after radical nephrectomy.

• 随访6-17个月，7例死于术后肿瘤复发或转移，1例随访9月出现肺转移。