Michael P. Leonard

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PURPOSE We compared the diagnostic performance of cystatin C and beta-trace protein with serum creatinine and the Schwartz formula for the estimation of glomerular filtration rate in children with spina bifida. MATERIALS AND METHODS Cystatin C, beta-trace protein and serum creatinine in children who underwent routine measurement of glomerular filtration(More)
PURPOSE Percutaneous nephrolithotomy is an established technique used in children with renal calculi. We review our experience with percutaneous nephrolithotomy for treating nephrolithiasis in childhood. MATERIALS AND METHODS We retrospectively reviewed the records of children who underwent percutaneous nephrolithotomy procedures for renal calculi from(More)
UTI are common in renal Tx recipients and may significantly impact on the graft function. The aim of our study was to evaluate the prevalence, risk factors, and significance of UTI in Tx children. We performed a retrospective cross-sectional study of 76 Tx patients, median age at Tx was 13.4 yr. Twenty-one of 76 (28%) patients developed at least one UTI(More)
PURPOSE We review the outcome of stopping prophylactic antibiotics in children with persistent vesicoureteral reflux (VUR). MATERIALS AND METHODS We performed a retrospective chart review of patients with VUR followed off antibiotics during the last 12 years. Selection criteria included children 4 years old or older who were toilet trained, could(More)
INTRODUCTION Circumcision has been the traditional treatment for phimosis. Recent reports of medical management of phimosis with topical steroids quote success rates of 67%-95%. We present our results with topical steroid therapy for treatment of phimosis. MATERIALS AND METHODS Retrospective review of 69 boys between the age of 3 and 13 years (average(More)
INTRODUCTION Posterior urethral valves (PUV) are the most common cause of male pediatric obstructive uropathy. Recent advancements in antenatal ultrasound and endoscopy have altered the presentation and management of PUV. Herein we describe the presentation, management and outcome of PUV patients in Eastern Ontario/Western Quebec over the last 3 decades. A(More)
PURPOSE Fowler and Stephens showed that by dividing the spermatic vessels a high intra-abdominal testis could be placed in the scrotum. Testicular atrophy is a potential complication of this technique. We conducted a systematic review to determine whether single or 2-stage Fowler-Stephens orchiopexy results in better testicular viability. MATERIALS AND(More)
In our hands, the Benchekroun hydraulic ileal valve has proved to be a very reliable continence mechanism. The patient is provided with a cosmetically acceptable stoma that creates diurnal and nocturnal continence and ease of catheterization. Stomal stenosis has occurred in several patients in our series and has been managed successfully with dilatation or(More)
The contribution of hyperprolactinemia to erectile disorders has not been clarified. Modest elevations of serum prolactin occur after administration of drugs that by themselves affect erectile function. Prolactinomas produce marked elevations of the hormone and invariably are accompanied by hypogonadotropic hypogonadism. Among 1,236 consecutive impotent(More)
BACKGROUND Wilms' Tumor is the most common malignant neoplasm of the urinary tract in children. Since 1969, the National Wilms' Tumor Study Group (NWTSG) has contributed to improving the clinical management and outcome of children affected by Wilms' Tumor. We have managed our patients according to NWTSG protocols and report our results herein. METHODS(More)