患儿男,1(3/12),岁于1990年2月2日因间歇性血尿二周以肾炎收住我院小儿科。体格检查:T36.3℃,P82次/分,R20 次/分,体重10kg,发育正常,营养一般,神志清,颜面苍白,浅表淋巴结不肿大,头颅、五宫正常,心肺无异常发现,腹部平坦,肝脾未触及。左肾下极可触及一肿物,质硬,不活动,叩击时患儿哭闹加剧,膀胱不充盈,睾丸大小正常,阴茎无异常。“B超”示;左肾下极约5.2×4.8cm Children male, 1 (3/12), aged 2 years in February 2, 1990 due to intermittent hematuria two weeks with nephritis admitted to our hospital pediatrics. Physical examination: T36.3 ℃, P82 times / min, R20 beats / min, weight 10kg, normal development, general nutrition, clear consciousness, pale face, superficial lymph nodes are not enlarged, Flat belly, liver and spleen not touched. Under the left kidney can reach a very tumor, hard, inactive, children crying worse when knocking, bladder filling, normal testicular size, no abnormalities in the penis. “B-ultra” show; the left kidney under the pole about 5.2 × 4.8cm