例1 男,20岁。因右侧腰腹部疼痛10月余、近周加重入院。无发热、血尿及腰部外伤史。入院体检未见异常。实验室检查Hb66g/L,ESR20mm/h,其余均正常,尿脱落细胞学检查阴性。B超示右肾盂有一1.9cm×3.0cm不规则中等回声团块,右肾活动度较对侧明显减弱。排泄性尿路造影未见异常。CT显示右肾肾盂段有一略低密度占位病变,直径2.5cm,边界模糊,腰旁淋巴结肿大,考虑“右肾癌伴腰旁淋巴结转移”。选择性肾动脉造影未见血管增粗及血管池等。术中发现右肾门淋巴结肿大,右肾大小色泽正常,表面光滑,局部粘连明显,酷似“肾癌”,行扩大根治性肾切除。术后标本见右肾大小约11.0cm Example 1 male, 20 years old. Due to the right side of the waist and abdomen pain more than 10 months, recent weeks increased admission. No fever, hematuria and history of lumbar trauma. Admission examination no abnormalities. Laboratory tests Hb66g / L, ESR20mm / h, the rest were normal, urine cytology negative. B ultrasound showed a right renal pelvis 1.9cm × 3.0cm irregular medium echo mass, right kidney activity was significantly weaker than the contralateral. Excretion urography no abnormalities. CT showed a slightly lower density of the right renal pelvis lesions, diameter 2.5cm, blurred border, lymph nodes around the waist, consider the “right kidney with lumbar lymph node metastasis.” Selective angiography no vascular thickening and vascular pool. Intraoperative findings of right kidney door lymphadenopathy, the right kidney size normal color, smooth surface, local adhesions significantly, resembles “kidney cancer”, to expand the radical nephrectomy. Postoperative specimens see the right kidney size of about 11.0cm