Ureteral Stone in an Infant / 대한비뇨기과학회지

Pediatric urolithiasis is a rare disease. Although the causes of pediatric urolithiasis are unknown, the metabolic conditions account for more than 50% of diagnoses. Because pain originating from stones may mimic a colic in infants, it is difficult to diagnose a stone in pediatrics. To our knowledge there is no case of urolithiasis reported in Korean infants. Here we report a case of a calcium-uric acid urolithiasis in an infant.

Diagnostic Usefulness of the Renal Resistive Index in Acute Unilateral Ureteral Obstruction / 대한비뇨기과학회지

PURPOSE: We evaluated the diagnostic usefulness of the renal resistive index in acute unilateral ureteral obstruction. MATERIALS AND METHODS: Our study consisted of 26 patients, with 52 kidneys, who presented with unilateral acute ureteral obstruction documented with excretory urography, and 20 men with both kidneys normal. The contralateral nonobstructed kidneys served as control. All patients underwent Doppler ultrasonography for determination of the resistive index (RI) and the difference between RI of the corresponding and contralateral kidney (deltaRI). RI and deltaRI were considered positive for obstruction at values of 0.70 or greater and 0.04 or greater, respectively. We calculated the sensitivity, specificity, and positive predictive values of RI and deltaRI for the diagnosis of acute ureteral obstruction. RESULTS: Kidneys with ureteral obstruction (n=26) had a mean RI of 0.73+/-0.05, contralateral normal kidneys (n=26) had a mean RI of 0.63+/-0.04, a significant difference (p<0.05). Similarly, the mean deltaRI of the patients was significantly higher than that of men with both normal kidneys (0.08+/-0.006 versus 0.02+/-0.004, respectively). The sensitivity for RI was 70%, the specificity was 82%. The corresponding values for deltaRI were 88% and 93%, respectively. The positive predictive values were 85% and 91%, respectively. CONCLUSIONS: Renal resistive index measurements are not valuable for the definite diagnosis of acute obstructive uropathy. Nevertheless, they are helpful in situations in which invasive radiologic study is undesirable.

Impact of Lower Urinary Tract Symptom on Quality of Life in Young Men / 대한비뇨기과학회지

PURPOSE: To evaluate the impact of lower urinary tract symptom (LUTS) on restlessness and quality of life (QoL) in young men. MATERIALS AND METHODS: The National Institutes of Health (NIH) - Chronic Prostatitis Symptom Index (CPSI) was used to identify men with LUTS in a community. The questionnaire also asked about sociodemographic characteristics. A total of 15,264 men, with LUTS without pain, were included in this study. RESULTS: Of the subjects, 521 (3.4%) felt their bladder did not empty fully after urinating more than 20% of the time, while 1,495 (9.7%) had to urinate again within 2 hours more than 20% of the time. Men dwelling in major towns were more likely to report they experienced incomplete emptying (p<0.001) and frequency (p<0.001). As educational level increased, the likelihood of frequency decreased (p=0.033), but that of incomplete emptying did not. In the multivariate model used, men experienced mild incomplete emptying had a 5.2-fold greater risk for restlessness (odds ratio [OR], 5.21; p<0.001) and those experiencing moderate to severe incomplete emptying had a 14.8-fold greater risk (OR, 14.84; p<0.001) than men that did not experience incomplete emptying. Mild frequency was associated with a 6.9-fold greater risk of restlessness (OR, 6.91; p<0.001) and moderate to severe frequency was associated with a 52.7-fold greater risk (OR, 52.67; p<0.001) than no frequency. CONCLUSIONS: The community-based prevalence of LUTS was found to be high in the population studied. The study indicated that demographic variables might influence the prevalence of LUTS in young men. In addition, our findings suggest that young men with LUTS experience a negative impact on their QoL.