患者女性,78岁。7年前无明显诱因出现尿频,每晚起夜4~5次,无尿痛、尿血,无排尿费力、中断,一直未治疗,症状逐渐加重。1个月前出现阵发性腰痛,左侧重,无恶心、呕吐、寒战发热;1周前CT检查示左肾见一大小5.3 cm×4 cm的等密度肿块影,并可见多发点状钙化影,轮廓光整。考虑为左肾癌。查体:左肾区轻压痛,未触及明显包块,左输尿管上段走行区轻压痛,膀胱区空虚,均未触及明显包块。术中 Female patient, 78 years old. 7 years ago no obvious incentive to frequent urination, every night from 4 to 5 times, no dysuria, hematuria, no urination strenuously, interrupted, has not been treated, the symptoms gradually aggravated. 1 month before onset of paroxysmal back pain, left heavy, no nausea, vomiting, chills and fever; a week ago CT showed a size of 5.3 cm × 4 cm of the left renal clear mass shadow and visible multiple dot calcification Shadow, contour finishing. Considered as left kidney cancer. Physical examination: left kidney area mild tenderness, did not reach the obvious mass, the upper left ureteral area light tenderness, empty bladder area, did not touch the obvious mass. Intraoperative