Christopher Ng

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PURPOSE We report on a prospective randomized comparison of transperitoneal versus retroperitoneal laparoscopic radical nephrectomy for renal tumor. MATERIALS AND METHODS Between June 1999 and June 2001, 102 consecutive eligible patients with a computerized tomography identified renal tumor were prospectively randomized to undergo either a transperitoneal(More)
PURPOSE We describe a novel technique of laparoscopic renal hypothermia with intracorporeal ice slush during partial nephrectomy as well as clinical experience with the initial 12 patients. MATERIALS AND METHODS A total of 12 select patients with an infiltrating renal tumor who were candidates for nephron sparing surgery underwent transperitoneal(More)
PURPOSE We analyzed complications of the initial 200 cases treated with laparoscopic partial nephrectomy for a suspected renal tumor. MATERIALS AND METHODS Since August 1999, 200 consecutive patients have undergone laparoscopic partial nephrectomy. Mean patient age was 61.6 years, mean body mass index was 29.9 and mean tumor size was 2.9 cm (range 1 to(More)
PURPOSE Tissue engineering has been used for bladder augmentations with small intestinal submucosa (SIS). Although favorable short-term outcomes have been reported, long-term followup has been poor. We investigate whether tissue engineering with stem cells improves the morphological and genetic composition. MATERIALS AND METHODS A total of 33 Lewis rats(More)
OBJECTIVES To describe our preferred method of right laparoscopic live donor nephrectomy (LDN) using a retroperitoneoscopic approach to determine the indications for, and overall rate of, right LDN and to compare the donor and recipient early outcomes of right retroperitoneal LDN to those of left transperitoneal LDN in a consecutive single-institution(More)
OBJECTIVE This study examines the influence of posture on the range of axial rotation of the thorax and the range and direction of the coupled lateral flexion. METHODS The ranges of mid thoracic axial rotation and coupled lateral flexion were measured in 52 asymptomatic subjects (aged 18-43 years) using an optical motion analysis system. To examine the(More)
PURPOSE Patients with cystinuria frequently have recurrent renal calculi and may subsequently require multiple stone removing procedures during their lifetime which could have an impact on overall renal function. We determined the potential impact of cystinuria and cystine stone formation on the level of renal function compared to calcium oxalate stone(More)
PURPOSE We compared the results of transperitoneal (T) and retroperitoneal (R) approaches to laparoscopic partial nephrectomy (LPN) in regard to perioperative outcomes and technical considerations, thereby, identifying patient selection guidelines for each approach. MATERIALS AND METHODS The choice of approach was dictated primarily by tumor location,(More)
PURPOSE We evaluate the role of contemporary urological intervention in patients with nephrolithiasis associated with autosomal dominant polycystic kidney disease. MATERIALS AND METHODS Intervention for upper tract stones associated with autosomal dominant polycystic kidney disease was performed in 5 women and 2 men 29 to 65 years old (mean age 47).(More)
BACKGROUND We compare the anatomic and functional outcomes of right live-donor nephrectomy (LDN) using either a hand-assisted approach (HALDN) or a pure retroperitoneoscopic approach (RLDN) in two institutions. PATIENTS AND METHODS Data were recorded prospectively in 59 patients undergoing right LDN using either hand-assisted (n=31) or pure(More)