[Multispiral computer tomography in differential diagnosis of congenital uretheroidhydronefrosis in children].

Aim: To identify the characteristic MSCT signs of pediatric ureterohydronephrosis allowing to assess the disease severity and differentiate between its various forms.

Material And Methods: Sixty five children with III-IV grade ureterohydronephrosis underwent a comprehensive examination including MSCT urography. The study comprised 40 (61.

[Sonographic semiotics of ureterohydronephrosis in children].

Aim: To identify typical sonographic semiotics of ureterohydronephrosis in children having importance in determining the severity of disease and the choice of treatment strategy in this category of patients.

Material And Methods: Sonographic images of the kidneys and urinary tract of 158 children with ureterohydronephrosis were examined. Unilateral and bilateral ureterohydronephrosis was found in 75 and 83 children, respectively.

[Scanning electron microscopy of resected ureters in children with ureterohydronephrosis].

Using scanning electron microscopy, various portions of the ureter in reflux and obstructive ureterohydronephrosis in children were evaluated. In the first case, architectonics of the distal portions is preserved, while in the second case connective tissue is proliferated. Differences in the structure of proximal and distal portions in both forms of ureterohydronephrosis consist in inflammatory changes and violation of the integrity of the epithelial lining, edema and infiltration of the underlying layers, especially the inner muscle layer of the distal portion.