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  • Title: High incidence of urinary stones in Uyghur children may be related to local environmental factors.
    Author: Wumaner A, Keremu A, Wumaier D, Wang Q.
    Journal: J Pediatr Urol; 2014 Apr; 10(2):289-93. PubMed ID: 24095687.
    Abstract:
    OBJECTIVE: To analyze the causes of urolithiasis in Uyghur children from Xinjiang. PATIENTS AND METHODS: We retrospectively evaluated the clinical features and characteristics of urinary stone composition of 220 Uyghur pediatric patients with urolithiasis between March 2009 and June 2011. The data were compared with that of 100 Uyghur children without urolithiasis who visited the Child Care Clinic for regular health check-ups. The stones were collected by endoscopy or open surgery, and analyzed using infrared spectroscopy. RESULTS: The mean age of the 220 Uyghur children was 7.48 ± 4.73 years (range, 0.8-17.0 years). The overall sex ratio (male:female) was 2.23:1. The predominant pure stone was ammonium urate (58.9%), whereas the predominant mixed stone was calcium oxalate mixture (91.1%). Uric acid stones comprised 54% of all stones. Urinary tract infections were observed in 42.3% and 4.0% of the patient and control groups, respectively. The mean urinary pH values were 5.77 ± 0.67 and 6.42 ± 0.67, respectively (p < 0.001). pH values were <5.5 in 52.7% and 6% of the patient and control groups, respectively. On 24-h urine analysis, we found metabolic disturbances in these patients: hypercalciuria in 6.8% cases, hyperphosphaturia in 16.8% cases, hyperuricosuria in 21.4% cases, and hypomagnesiuria in 34.1% cases. CONCLUSIONS: Urolithiasis in Uyghur children may be primarily related to local environmental factors.
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