NR was found in 6 of 22 cases of renal tissues adjacent to nephroblastoma whereas it was found in only 1 of the 30 cases of non-neoplastic mature renal tissues.

• 方法在光学显微镜下比较30例肾母细胞瘤和16例不同胎龄肾组织的形态特点；观察比较22例肾母细胞瘤瘤旁肾组织和30例非肿瘤成熟肾组织中肾源性剩余的阳性率。