患者,女,50岁。左侧腰腹部疼痛2年余,无尿频、尿急、尿痛及血尿史,否认外伤、结核及排石史。检查:腹软,沿左输尿管走行区深压痛,左肾区轻叩痛,右肾区无叩痛。尿常规:白细胞(+),红细胞(++)。血常规无异常,血尿素氮3.9mmol/L,肌酐125μmol/L.B超显示左肾体积稍增大,左输尿管中上段扩张。排泄性尿路造影显示左 Patient, female, 50 years old. Left waist and abdominal pain more than 2 years, no frequent urination, urgency, dysuria and hematuria, denied trauma, tuberculosis and stone row history. Check: Abdominal soft, along the left ureter walking area deep tenderness, pain in the left kidney area, the right kidney area without percussion pain. Urine: white blood cells (+), red blood cells (++). No abnormal blood, blood urea nitrogen 3.9mmol / L, creatinine 125μmol / L. B ultrasound showed a slight increase in the size of the left kidney, upper left ureteral dilatation. Excretion urography showed left