[Comparative study of anatomical changes and function in kidneys after reconstructive surgery of the urinary tract...

We performed a comparative evaluation of anatomical and functional changes in kidneys after urinary tract reconstructive procedures and in patients with history of urinary tract infections using renal scintigraphy and other imaging techniques. Statistically significant differences in the prevalence of pathological findings in imaging between these groups were shown. When children after the RVU are taken into account renal scintigraphy supplies us with objective and precise data about the renal scarring degree. In this group repeated renal scintigraphy should be warranted. After the reconstructive procedures due to hydronephrosis the images from ultrasonography and renal scintigraphy correlate well. Ultrasonography is a golden standard for screening these patients. Statistically significant higher degree of renal scarring in renal scintigraphy in patients after urinary tract infections without urinary tract defect proves the important role of infections in the pathogenesis of these changes. Children with recurrent symptomatic urinary tract infections should be submitted to renal scintigraphy imaging on regularly basis, as a risk group of higher chronic pyelonephritis prevalence.