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OBJECTIVES The Seoul National University Renal Stone Complexity (S-ReSC) scoring system was developed to predict the stone-free rate (SFR) after single-tract percutaneous nephrolithotomy (PCNL). This study is an external validation of this scoring system. MATERIALS AND METHODS A retrospective review included 327 patients who underwent PCNL at 2 tertiary(More)
PURPOSE There are only a few reports of extramammary Paget disease (EMPD) of the external genitalia because it is a rare malignancy. We investigated patients with EMPD of the penis and scrotum and report the outcome of surgical management. MATERIALS AND METHODS From 2000 to 2012, a total of 19 patients diagnosed as having penile and scrotal EMPD underwent(More)
Osteoarthritis (OA) is a considerable health problem worldwide. It is known to be associated with certain occupational risk factors. We examined the prevalence rate of OA by occupational cluster. Data were collected from the Korea National Health and Nutrition Examination Surveys (2010-2013). The total number of unweighted sample size was 9,905(More)
PURPOSE To investigate surgical outcomes between retrograde intrarenal surgery (RIRS) and percutaneous nephrolithotomy (PNL) groups for a main stone sized 15 to 30 mm and located in the lower-pole calyx. MATERIALS AND METHODS Patients who underwent PNL or RIRS for a main stone sized 15 to 30 mm and located in the lower-pole calyx were retrospectively(More)
PURPOSE To report the outcome of laparoscopic pyelo- and ureterolithotomies with the aid of flexible nephroscopy. MATERIALS AND METHODS A retrospective analysis was performed in 71 patients with complex renal stones or large and impacted proximal ureteral stones. Patients underwent laparoscopic pyelo- or ureterolithotomies with or without the removal of(More)
INTRODUCTION This study investigated the learning curve of a single-session retrograde intrarenal surgery (RIRS) in patients with mid-sized stones. Competence and trainee proficiency for RIRS was assessed using cumulative sum analysis (CUSUM). MATERIALS AND METHODS The study design and the use of patients' information stored in the hospital database were(More)
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