Factores predictores del estado libre de cálculos en la primera ureteroscopia flexible con litotricia láser.

Introduction: Flexible ureteroscopy and laser fragmentation (FURSL) is a minimally invasive modality for surgical treatment of renal stones. Inadequate selection of patients for this treatment generates a cost-effectiveness unbalance.

Objective: To know the stone-free rate predictors in a single surgical time in patients undergoing FURSL.

[Tamsulosin, oxybutynin or their combination in the treatment of ureteral stent-related symptoms].

Background: The aim of this paper is to compare the efficacy of tamsulosin, oxybutynin or their combination for the treatment of symptoms related to double J stent (DJS).

Methods: Randomized clinical non-blinded trial with three arms (tamsulosin, oxybutynin or combination) to assess the improvement of ureteral related symptoms with DJS with the questionnaire of Ureteral Stent Symptom Questionnaire (USSQ) and the adverse effects of treatment. Evaluations were made at 7 and 21 days after the placement of DJS.

[Prognostic factors of morbimortality in patients with emphysematous pyelonephritis].

Background: Emphysematous pyelonephritis (EPN) is a severe infection of the urinary tract, caused by gas accumulation within the collecting system, the renal parenchyma, and/or the perirenal tissue. The cause of this infection is not known at all; however, it has been suggested that it is produced by the glucose fermentation provoked by enterobacteriaceae or anaerobic organisms. Our objective was to evaluate the predictors of morbidity and mortality in patients diagnosed with EPN.

Laparoscopic management of retrocaval ureter: case report and literature review.

Background: Retrocaval ureter is a rare congenital anomaly with an incidence of approx. 1/1000 live births. Recently, the laparoscopic approach has become the gold standard for treatment, relegating open surgery as a second option.