Conservative Management of Pediatric Nephrolithiasis Caused by Melamine-Contaminated Milk Powder Zhu SL et al. - Nephrolithiasis was associated with high melamine-exposure levels. A combination of B-ultrasonography and urinalysis is suitable for screening for pediatric nephrolithiasis caused by melamine poisoning. The condition can be resolved with a conservative treatment approach in patients without serious clinical symptoms who have normal kidney function. [more...]