作者回顾性复习1971～1990年727例手术切除肾实质恶性肿瘤的病理报告发现:61例有多发肿瘤,占8.4%,其中T_1期1例,T_2期2Q例,T_3期38例,T_4期2例。257例肿瘤直径≤5cm,158例肿瘤直径≤4cm,78例肿瘤直径≤3cm,在这三组肿瘤中多发肿瘤的发生率分别为26例(10.1%)、17例(10.75%)和10例(12.8%)。在有多发肾肿瘤的26例中,10例的第二个肿瘤紧邻最大肿瘤,其中有7例为 The authors retrospectively reviewed the pathology report of 727 surgically resected malignant tumors of the renal parenchyma from 1971 to 1990: 61 cases had multiple tumors, accounting for 8.4%, of which 1 case was in T 1 stage, 2 cases in T 2 stage, 38 cases in T 3 stage, and 2 in T 4 stage. example. 257 tumors were ≤5 cm in diameter, 158 tumors were ≤4 cm in diameter, and 78 tumors were ≤3 cm in diameter. The incidence of multiple tumors in these three groups was 26 (10.1%), 17 (10.75%), and 10 (12.8%). In 26 cases with multiple renal tumors, the second tumor in 10 cases was adjacent to the largest tumor, of which 7 cases were