患者,男,35岁。于1977年夏无任何诱因出现肉眼血尿半天。以后每年夏季发作一次,时间由半天到4～5天不等,不伴尿频尿急,偶有排尿后尿道不适及下腰部酸胀、疼痛,以左侧为著,曾多次检查未确诊。服用呋喃坦丁后血尿好转。近3个月来下腰部不适,1986年7月作“B超”检查发现右肾外形增大,右输尿管全程扩张,左肾失去常态。后来我院就诊。既往1976 Patient, male, 35 years old. In the summer of 1977 no cause of gross hematuria half a day. After a summer attack each year, time from a half day to 4 to 5 days, without urinary urgency, occasional urination urinary tract discomfort and lower back soreness, pain, to the left, has repeatedly checked unconfirmed. After taking furanten Ding hematuria improved. Nearly three months to lower back discomfort, in July 1986 for “B-ultrasound” examination found that the shape of the right kidney increased right ureter full expansion of the left kidney loss of normalcy. Later, our hospital. Past 1976