Kazuhito Matsushita

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PURPOSE We evaluated predictors of progression after starting active surveillance, especially the role of prostate specific antigen and immediate confirmatory prostate biopsy. MATERIALS AND METHODS A total of 238 men with prostate cancer met active surveillance eligibility criteria and were analyzed for progression with time. Cox proportional hazards(More)
Urothelial carcinoma of the bladder (UCB) is an especially complex and heterogeneous disease with a broad spectrum of histologic findings and potentially lethal behavior. Despite advances in surgical techniques, as well as intravesical and systemic therapies, up to 30% of patients with non-muscle-invasive UCB and 50% of patients with muscle-invasive UCB(More)
PURPOSE We determined whether pelvic soft tissue and bony dimensions on endorectal magnetic resonance imaging influence the recovery of continence after radical prostatectomy, and whether adding significant magnetic resonance imaging variables to a statistical model improves the prediction of continence recovery. MATERIALS AND METHODS Between 2001 and(More)
INTRODUCTION It is recognized that some patients experience painful orgasms known as dysorgasmia after radical prostatectomy (RP). This problem poses a barrier to satisfactory sexual relations for some couples. However, the natural history of this condition remains unknown. AIM To assess the evolution of dysorgasmia in patients who underwent RP. METHODS(More)
INTRODUCTION To evaluate the incidence and risk factors for postoperative inguinal hernia (IH) after robot-assisted radical prostatectomy (RARP) and to assess whether a newly developed prevention technique reduces the incidence of IH after RARP. METHODS We included 161 consecutive patients (322 groins) who underwent RARP between September 2011 and October(More)
OBJECTIVE To characterize the clinicopathologic features of patients who developed pubovesical fistula (PVF) after treatment of prostate cancer and to identify some possible methods of reducing the incidence of this rare complication for which no well-established guidelines exist. METHODS We identified men at 2 centers who presented with PVF after(More)
OBJECTIVE To build a predictive model of urinary continence recovery after radical prostatectomy (RP) that incorporates magnetic resonance imaging (MRI) parameters and clinical data. PATIENTS AND METHODS We conducted a retrospective review of data from 2,849 patients who underwent pelvic staging MRI before RP from November 2001 to June 2010. We used(More)
OBJECTIVE To analyze international trends in artificial urinary sphincter (AUS) use, indications for placement, and application by gender. METHODS We conducted a retrospective review of data derived from patient information forms sent to American Medical Systems. There were 86 140 unique cases from March 1975 through December 2008, including all(More)
BACKGROUND Patients with late-onset hypogonadism (LOH) benefit from testosterone replacement by improvement in the parameters of the metabolic syndrome, but fat cell morphology in these patients is still unclear. This study aims to determine the effect of testosterone replacement on the morphology of fat cells in subcutaneous and visceral adipose tissue and(More)
The administration of 1 mg estradiol every other week for 12 weeks to female rats resulted in a high incidence (about 50%) of bladder stones. Most calculi were struvite, suggesting the predisposition to urinary tract infection. Enterobacteria, staphylococcus and streptococcus were identified as infecting organisms. Metaplasia of the transitional bladder(More)