Abstract
There exist only limited longitudinal data on patients who had abnormal urinalysis findings at the 3-year-old routine check up. We examined the results of routine urinalysis of 3-year-olds at 7 public health centers and branches in Kyoto City, and the follow-up results from those with abnormal findings who visited Kyoto City Hospital. Routine urinalysis was done on 53,294 children at the 3-year-old check up and 4,450 children were reexamined at 7 public health centers and branches in Kyoto City because their first urinalysis showed some abnormality. Of them, 683 children (1.28% of the original group) were referred to hospitals for more detailed testing. Over the past 10 years, 394 children consulted the pediatric department of Kyoto City Hospital due to abnormal urinalysis results at the 3-year-old routine urinalysis. Out of 394, 181 showed normal urinalysis, 157 showed microhematuria, 50 showed asymptomatic hematuria, 3 showed asymptomatic proteinuria and 3 were tentatively diagnosed with nephritis at the hospital. We investigated 271 children who had follow up information collected when they became 6 years old. We found that 24 of the children had changed hospitals, 116 quit visiting the hospital, 51 were determined to have normal urinalysis and stopped coming, 49 had normal urinalysis, 22 showed microhematuria, 3 showed asymptomatic hematuria, 3 showed asymptomatic proteinuria and 2 were diagnosed with non-IgA mesangium proliferative glomerulonephritis.
