External validation of Modified Seoul National University Renal Stone Complexity Score to predict outcome and complications of retrograde intrarenal surgery: a RIRSearch Group study.

Introduction: The Modified Seoul National University Renal Stone Complexity Score (S-ReSC) is a simple model based solely on stone location regardless of stone burden. The aims of this study were to validate S-ReSC for outcomes and complications of retrograde intrarenal surgery (RIRS) and to evaluate its predictive power against the stone burden.

Material And Methods: Data of 1007 patients with kidney stones who had undergone RIRS were collected from our RIRSearch database.

Elevation of serum and urinary carbohydrate antigen 19-9 in benign hydronephrosis.

Objective: The aim of this study was to find out the predictive role of serum and urinary carbohydrate antigen 19-9 levels in benign hydronephrosis and whether these levels are helpful for differentiation of complete or partial urinary obstruction.

Materials And Methods: Fifty-four patients with, and 23 without, benign hydronephrosis were enrolled in this study. Serum and urinary carbohydrate antigen 19-9 were determined by the chemiluminescence enzyme immunometric assay method and these levels were correlated with clinical factors.