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PURPOSE To our knowledge we report the first technical feasibility and safety study of 1-step percutaneous nephrolithotomy using the previously described 4.85Fr all-seeing needle (PolyDiagnost, Pfaffenhofen, Germany). We defined microperc as modified percutaneous nephrolithotomy in which renal access and percutaneous nephrolithotomy are done in 1 step using(More)
OBJECTIVE To plan a prospective comparative case-control designed study aiming to compare minipercutaneous (miniperc) and retrograde intrarenal surgery (RIRS) for a renal calculus of size 1-2 cm. PATIENTS AND METHODS A total of 64 cases (32 in each arm) underwent miniperc and RIRS during the study period from March 2009 to April 2011. The primary and(More)
PURPOSE OF REVIEW Training in percutaneous nephrolithotomy (PCNL) necessitates the trainee to climb the steep learning curve of this procedure sequentially. The initial steps of the process should be the acquisition of the necessary skills in a nonintimidating skills lab. We review the current scenario of the training in PCNL and advocate the means that may(More)
PURPOSE To evaluate the outcome of flexible ureteroscopy training with or without an active mentor. MATERIALS AND METHODS Thirty-six flexible ureteroscopy naive practicing urologists and urology residents, after an initial introductory refreshment course, underwent training under a mentor for 15 minutes each in a high-fidelity nonvirtual reality(More)
BACKGROUND AND PURPOSE Patients who present with varying severity of obstructive urolithiasis behave differently after the treatment. Some patients recover with improved renal function while others progress to renal failure. Our objective was to objectively quantify which patients would progress to renal failure after treatment for obstructive urolithiasis.(More)
OBJECTIVE To establish the efficacy of early removal of a nephrostomy tube after percutaneous nephrolithotomy (PCNL), to challenge the wisdom of tubeless PCNL, as we hypothesized that it would result in a shorter hospital stay, comparable benefit and safety, while maintaining the option of check nephroscopy ensuring far superior stone clearance. PATIENTS(More)
OBJECTIVE To report the initial clinical cases of scarless, single port, transumbilical nephrectomy and pyeloplasty. PATIENTS AND METHODS One patient each underwent single port transumbilical nephrectomy and pyeloplasty using the R-Port (Advanced Surgical Concepts), inserted through a transumbilical incision in both cases. Novel, specialized instruments,(More)
BACKGROUND AND PURPOSE In percutaneous nephrolithotomy (PCNL), placement of the access tract into the kidney is an important aspect of the procedure and is responsible for the steep learning curve associated with the operation. The aim of the current prospective randomized trial was to assess the duration of radiation exposure along with the safety and(More)
BACKGROUND AND PURPOSE Staghorn stone volume and its distribution within the collecting system, "staghorn morphometry," predicts the requirement of tract and stage for percutaneous nephrolithotomy (PCNL) monotherapy. The purpose of the study was to develop a CT urography staghorn morphometry-based prediction algorithm to predict tract(s) and stage(s) for(More)
'Microperc' is a recently described technique in which percutaneous renal access and lithotripsy are performed in a single step using a 16 G micropuncture needle. 'Mini-microperc' is a further technical modification in which an 8 Fr sheath is used to allow insertion of ultrasonic or pneumatic lithoclast probe with suction. The available evidence indicates(More)