Study progress on correlation between ultrasonography and prognosis of non-surgical treatment to hydronephrosis caused by ureteropelvic junction obstruction in children

Hydronephrosis caused by ureteropelvic junction obstruction(UPJO) is a common urinary abnormality in children which involves dilation in the urinary tract due to limitation in urinary drainage.Most cases would resolve spontaneously, but the others who were short of adequate treatment would lead to irreversible renal damage.Ultrasonography is the most common examination for UPJO.However, there exists disagreement in the way to define obstruction accurately or to predict which patient will benefit from surgical intervention by ultrasonography.By reviewing the related national data the authors analyzed the advance on prognosis of ultrasonography and the non-surgical outcomes of UPJO. Key words: Hydronephrosis; Ureteropelvic junction obstruction; Ultrasonography; Operation