Shina Kawai

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Endoscopic transurethral incision (TUI) of posterior urethral valve (PUV) can improve daytime urinary incontinence (DUI) and nocturnal enuresis (NE). However, the underlying mechanism has not been elucidated. In this study, we retrospectively examined the mobility of the urethra before and after TUI by measuring the urethral angle with voiding(More)
Vesicoureteral reflux (VUR) is one of the most common diseases in pediatric urology and classified into primary and secondary VUR. Although posterior urethral valve (PUV) is well known as a cause of the secondary VUR, it is controversial that minor urethral deformity recognized in voiding cystourethrography represents mild end of PUV spectrum and(More)
Purpose This study aims to evaluate the endoscopic morphological features of congenital posterior urethral obstructions in boys with refractory daytime urinary incontinence and/or nocturnal enuresis. Patients and Methods A total of 54 consecutive patients underwent endoscopy and were diagnosed with a posterior urethral valve (PUV) (types 1-4). PUV type 1(More)
Flow cytometric DNA analysis was performed on the testicular biopsy tissue obtained from 17 oligospermic men, 25 azoospermic men and 5 normal men. DNA histograms were made after viewing a small piece of biopsy tissue for a short time. The DNA histograms were classified by eye into four types (Type A: Aspermatogenesis without haploid cell, Type B: Maturation(More)
PURPOSE We performed low scrotal approach orchiopexy in patients with prescrotal cryptorchidism. The processus vaginalis was not ligated if it was not widely patent. We retrospectively evaluated the long-term outcomes of low scrotal approach orchiopexy without processus vaginalis ligation. MATERIALS AND METHODS A total of 137 patients (227 testes) were(More)
BACKGROUND Acute-phase technetium-99 m dimercaptosuccinic acid (DMSA) scintigraphy is recommended for initial imaging in children with febrile urinary tract infection (fUTI). Recently, the importance of identifying patients at risk of recurrent fUTI (r-fUTI) has been emphasized. To clarify the effectiveness of DMSA scintigraphy for predicting r-fUTI in(More)
OBJECTIVE We created software for patterning uroflowmetry (UFM) curves, and validated its utility. PATIENTS AND METHODS The software patterns a given UFM curve upon four parameters: sex, voided volume, maximal flow rate, and amplitude of fluctuation. Using the software, 6 urologists from 4 institutes assessed 30 test curves. Further, 329 UFM curves(More)
Disruption of the ureter is very rarely caused by a blunt trauma, only 12 cases having been reported in Japan. A 20-year-old male suffered from a blunt abdominal trauma in a traffic accident. Although his urinalysis showed no abnormalities, a dull pain in the left flank region persisted for over a week after the injury. Under the suspicion of renal or(More)
UNLABELLED Study Type--Therapy (case series) Level of Evidence 4. What's known on the subject? and What does the study add? We have clarified that there exist two types of voiding urodynamics (pressure-flow-study) for congenital urethral obstruction in boys; one is synergic pattern (SP) and the other is dyssynergic pattern (DP). In terms of daytime(More)
OBJECTIVE To evaluate the effectiveness of a 3-month enuresis alarm (EA) treatment and repeat EA treatment among pediatric patients with nocturnal enuresis, and to compare patient characteristics among "responders" and "nonresponders" to treatment. MATERIALS AND METHODS Clinical outcomes were retrospectively evaluated for 137 children (94 boys and 43(More)