1　临床资料患儿 ,男 ,9岁。因反复肉眼血尿 3年于 2 0 0 0年 7月 9日入院。患儿于 3年前无明显诱因开始出现肉眼血尿 ,无尿少、水肿、高血压 ,无反热 ,无腰痛、腹痛 ,无头痛、头昏 ,无尿频、尿急、尿痛。肉眼血尿常在运动后或上呼吸道感染后诱发 ,不经治疗肉眼血尿又可自行消 1 clinical data in children, male, 9 years old. Due to repeated gross hematuria 3 years in July 9, 2000 admission. Children with no obvious cause of hematuria began 3 years ago, no urine, edema, high blood pressure, no fever, no back pain, abdominal pain, no headache, dizziness, frequent urination, urinary urgency, dysuria. Gross hematuria often induced after exercise or upper respiratory tract infection, without treatment of gross hematuria and self-cancellation