The use of S-curved coaxial dilator for urethral dilatation: Experience of a tertiary department.

Objective: Urethral strictures can be treated by urethral dilation, optical internal urethrotomy, or open surgical reconstruction (urethroplasty). Urethral dilation is done with filiforms and followers, balloons, or coaxial dilators inserted over a guidewire. The S-curved coaxial dilator (SCCD) was designed to facilitate the passage of the dilator through the stricture and the urethra because it imitates the curved anatomy of the male urethra.

Papillary vs Nonpapillary Puncture in Percutaneous Nephrolithotomy: A Prospective Randomized Trial.

Introduction: Literature suggests that the percutaneous punctures for percutaneous nephrolithotomy (PCNL) must be performed at the papilla of the renal calix and a puncture at the infundibulum or the direction of the pelvis is not advisable because of increased hemorrhagic risk. A prospective randomized study was conducted to investigate the safety in terms of blood loss of the infundibular approach for PCNL.

Materials And Methods: Patients with renal stones with an accumulative size of at least 2 cm were randomly assigned to one of two parallel groups to undergo PCNL with either papillary (Group 1) or infundibular (Group 2) renal access.