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BACKGROUND In percutaneous nephrolithotomy (PNL), the best possible way to access the collecting system is still a matter of debate. There is little possibility of correcting a suboptimal access. OBJECTIVE To describe our initial experience using a micro-optical system through a specific puncture needle to confirm the quality of the chosen access prior to(More)
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)
PURPOSE High dose local stereotactic radiosurgery was performed in select patients to improve local tumor control and overall survival. We report on patients with renal tumors treated with single fraction robotic stereotactic radiosurgery. MATERIALS AND METHODS A total of 40 patients with a median age of 64 years who had an indication for nephrectomy and(More)
OBJECTIVES In vitro investigations of Ho:YAG laser-induced stone fragmentation were performed to identify potential impacts of different pulse durations on stone fragmentation characteristics. MATERIALS AND METHODS A Ho:YAG laser system (Swiss LaserClast, EMS S.A., Nyon, Switzerland) with selectable long or short pulse mode was tested with regard to its(More)
The objectives of this study are to assess the efficacy and safety of retrograde ureteroscopic holmium laser lithotripsy for intrarenal calculi greater than 2 cm in diameter. A total of 24 patients with a stone burden >2 cm were treated with retrograde ureteroscopic laser lithotripsy. Primary study endpoints were number of treatments until the patient was(More)
INTRODUCTION Percutaneous stone removal increasingly plays an important role among the different approaches of interventional stone therapy, particularly since the development of miniaturized instruments is resulting in lower morbidity for the patients. One major drawback of smaller instruments is the increased difficulty of stone retrieval after(More)
OBJECTIVE The purpose of this study is to assess the accuracy of dual energy CT (DECT) in the characterization of renal and ureteral stones. MATERIAL AND METHODS Twenty-four renal calculi of known variable composition were scanned on a dual-source CT scanner (Somatom Definition; Siemens Medical Solutions, Forchheim, Germany) in dual energy (DECT) mode.(More)
OBJECTIVES To evaluate the surgical complications in a contemporary group of elderly patients with renal masses, as almost a quarter of patients with newly diagnosed renal mass are aged >74 years, with the potential for significant comorbidity. PATIENTS AND METHODS From April 2004 to June 2007, of 379 surgical resections of renal tumours, we assessed 117(More)
CONTEXT Ureteral calculi represent a common condition that urologists encounter in everyday practice. Several treatment options are available for calculi that do not pass spontaneously or are unlikely to do so. OBJECTIVE In this nonsystematic review, we summarize the existing data on contemporary management of ureteral stones focusing on medical expulsive(More)