Radical extensive surgery for renal cell carcinoma:long-term results and prognostic factors .5 .那颜群,孙则禹,叶章群,等,中国泌尿外科疾病诊断治疗指南.北京:人民卫生出版社,2008,8-.Extranodal extension in regional lymph nodes is associated with outcome in patients with renal cell carcinoma . ......