作者研究偶发小肾细胞癌 (RCCs)的自然病程 ,对其生长速度、组织学分级、细胞增殖和凋亡进行评价。从 1987年 9月至 2 0 0 2年 3月 ,总共 18例肾癌患者 (男 13例 ,女 5例 )在至少 12个月无其他治疗的观察期后进行肾切除或肾部分切除手术。患者平均年龄 5 6 .5岁 (37～ 71岁 ) , The authors studied the natural history of sporadic small cell renal cell carcinoma (RCCs) and evaluated their growth rate, histological grade, cell proliferation and apoptosis. From September 1987 to March 2002, a total of 18 patients with renal cell carcinoma (13 males and 5 females) underwent nephrectomy or partial nephrectomy after at least 12 months of no other treatment. The average age of patients was 56.5 years (37-71 years)