黄色肉芽肿性肾盂肾炎为少见病。多发于30～50岁中年人,但小儿和老年人也有发生。我院曾收治1例小儿患者,报告如下。男5岁。因左腰疼痛半年加重10余天,伴不规则发热,以“左肾肿瘤”收入院。患儿自发病以来,活动时腰区疼痛加重,时有尿痛,但无尿频、尿急及血尿。查体:T36.9℃,BP16/9kPa,发育良好,腹软,肝脾未及,左肾区触及约8×7cm肿块.质韧,边缘不清,不活动。余未见异常。实验室检查:WBC10.4×10~9/L,N68％,L32％。尿常规:pH6.5.蛋白(±),尿中可见少许白细胞,尿糖(-),尿培养(-)。B超示:左肾区不规则增大,下极见5.5×4.3cm大小的实质性稍低回声区,边缘不清,内回声不均质。静脉肾盂造影示:左肾上极肾小智盏显影尚可,上大肾盏受压拉长,呈条状变形,并向内上方移位.中下肾 Yellow granulomatous pyelonephritis is a rare disease. Occurred in middle-aged 30 to 50 years old, but children and the elderly have occurred. Our hospital has admitted a pediatric patients, the report is as follows. Male 5 years old. Due to left lower back pain increased six months more than 10 days, with irregular fever, “left kidney cancer” income hospital. Children from the onset, the activities of the lumbar region increased pain, sometimes dysuria, but no frequent urination, urgency and hematuria. Physical examination: T36.9 ℃, BP16 / 9kPa, well-developed, abdominal soft, liver and spleen did not reach the left kidney area touched about 8 × 7cm mass. Quality toughness, marginal unclear, inactive. I no abnormalities. Laboratory tests: WBC10.4 × 10 ~ 9 / L, N68%, L32%. Urine routine: pH 6.5. Protein (±), visible in the urine a little white blood cells, urine sugar (-), urine culture (-). B ultrasound showed: irregular increase in the left kidney area, the next most see 5.5 × 4.3cm size slightly lower echo area, the edge is not clear, the echo is not homogeneous. Intravenous pyelography showed: the left kidney on the kidney Chi Chi imaging is acceptable, on the large calyx compression elongated, strip-like deformation, and the shift to the inside of the upper and lower kidney