Publications by authors named "Dominique Prapotnich"

Objective: High-intensity focused ultrasound (HIFU) Focal therapy appears to have encouraging oncologic outcomes and urinary and erectile function. The control of the treated area can be done using contrast enhanced ultrasound with sulfur hexafluoride (Sonovue®) at the end of the procedure. We report oncological and functional outcomes in HIFU focal therapy (FT) for prostate cancer (PCa) management using sonovue.

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Objectives: To evaluate the technical feasibility, oncological and functional outcomes of nerve sparing cystoprostatectomy (NSCP) and prostate capsule-sparing cystectomy (PCSC) for the treatment of organ-confined bladder cancer at a single referral centre.

Patients And Methods: From April 2001 to June 2012, 60 patients underwent PCSC and 47 were treated with NSCP. Inclusion criteria for PCSC were: fully informed consent for the well-motivated patient; negative transurethral resection of the bladder neck; normal prostatic specific antigen (PSA) level (defined as <4 ng/dL during the first year of the study, which was later lowered to 2.

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Article Synopsis
  • Up to one-third of newly diagnosed prostate cancer cases are eligible for focal treatment; however, data on the toxicity of these lesion-targeting therapies is limited, making comparisons challenging.* -
  • This study analyzed 336 patients undergoing focal high-intensity focused ultrasound (HIFU) or cryosurgical ablation (CSAP) from 2009 to 2017, assessing the incidence, severity, and timing of treatment complications.* -
  • The results showed that 38% of patients experienced complications after HIFU and 21% after CSAP, with most being minor and occurring early post-surgery; complications were linked to factors like prostate size and catheterization time.*
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Objective: To estimate the conditional biochemical recurrence-free probability and to develop a predictive model according to the disease-free interval for men with clinically localized prostate cancer treated with minimally invasive radical prostatectomy.

Methods: The study population consisted of 3576 consecutive patients who underwent laparoscopic radical prostatectomy and 2619 men treated with robotic radical prostatectomy in the past 15 years at Institute Mutualiste Montsouris, Paris, France. Biochemical recurrence was defined as serum prostate-specific antigen ≥0.

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Objective: To evaluate the effects of switching from prednisone (P) to dexamethasone (D) at asymptomatic prostate-specific antigen (PSA) progression in patients with metastatic castration-resistant prostate cancer (mCRPC) treated with abiraterone acetate (AA).

Materials And Methods: Among 93 patients treated with AA between January 2013 and April 2016 in our institution, 48 consecutive asymptomatic patients with mCRPC, who experienced biochemical progression on treatment with AA+P 10 mg/day, were included. A corticosteroid switch to AA+D 0.

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We developed and validated an architecture-based grading for clear cell renal cell carcinoma (ccRCC) in an observational retrospective cohort study including 506 tumors (principal cohort, n=254; validation cohort, n=252). Study endpoints were disease-free survival (DFS) and cancer-specific survival (CSS). Relationships with outcome were analyzed using Harrell concordance index, time-dependent receiver operating characteristic curve, area under curve, and Cox regression model.

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Objective: We intended to analyze the outcomes and predictive factors for underestimating the prostate cancer (PCa) grade group (GG) from prostate biopsies in a large monocentric cohort of patients treated by minimally invasive radical prostatectomy (RP).

Materials And Methods: Using a monocentric prospectively maintained database, we included 3062 patients who underwent minimally invasive RP between 2006 and 2013. We explored clinicopathologic features and outcomes associated with a GG upgrade from biopsy to RP.

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Article Synopsis
  • The study aimed to assess the learning curve of minimally invasive radical prostatectomy (MIRP) over a 15-year period, focusing on oncological outcomes like positive surgical margins (PSM) and biochemical recurrence (BCR).
  • Data from 5,547 patients showed a downward trend in both PSM and BCR rates as surgeons gained experience, with significant improvements noted after 350 LRP cases and 100 RARP cases.
  • Key factors influencing BCR included prostate-specific antigen levels, Gleason score, and the presence of extraprostatic disease, indicating that experience and patient characteristics significantly affect surgical outcomes.
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  • The study evaluated the outcomes of minimally invasive salvage prostatectomy (MISP) in 28 patients who had previously undergone increased prostate cancer treatments, analyzing factors like surgical complications and cancer recurrence.
  • Results indicated that MISP after focal treatment required less time and had fewer instances of disease advancement compared to when performed after whole-gland treatment.
  • Follow-up data showed that about 72% of patients remained cancer-free, with a notable number experiencing complications related to urinary function, suggesting MISP is a viable option in certain prostate cancer cases.
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Background: Prostate-specific antigen (PSA) doubling time is relying on an exponential kinetic pattern. This pattern has never been validated in the setting of intermittent androgen deprivation (IAD). Objective is to analyze the prognostic significance for PCa of recurrent patterns in PSA kinetics in patients undergoing IAD.

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Background: In selected patients with unilateral, organ-confined prostate cancer (PCa), hemiablation of the affected lobe might be feasible to achieve acceptable cancer control with fewer complications.

Objectives: To assess the oncologic and functional outcomes of focal high-intensity focused ultrasound (HIFU) hemiablation in unilateral organ-confined PCa.

Design, Setting And Patients: Single-center prospective evaluation of HIFU hemiablation for unilateral organ-confined PCa was performed from July 2009 through December 2013.

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Purpose: We evaluated the prostate cancer detection with transperineal template-guided mapping biopsy in patients with elevated prostate-specific antigen and negative magnetic resonance imaging (MRI)-guided biopsy.

Materials And Methods: Totally 75 patients underwent transperineal template-guided mapping biopsy for prior negative MRI-guided (cognitive registration) biopsy during April 2013 to August 2014. Primary objective was to report clinically significant cancer detection in this cohort of patients.

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Objective: To evaluate the transition from laparoscopic (LPN) to robotic partial nephrectomy (RPN) in our institution using 'trifecta' outcomes as surrogate marker of efficacy.

Patients And Methods: We identified 347 patients (LPN = 303, RPN = 44) in our prospectively maintained PN database between 2000 and 2014. The patients were chronologically divided into G1-first 151 LPN cases, G2-subsequent 152 LPN cases and G3-all RPN patients.

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Objective: To define immunoscore in bladder cancer studying T helper 1 (Th1) immunoreaction. To define a cancer-specific survival model based on Th1 cells infiltration.

Methods: A total of 252 patients underwent primary transurethral resection of bladder tumour at our Institution.

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Accurate diagnosis of prostate cancer has eluded clinicians for decades. With our current understanding of prostate cancer, urologists should devise and confidently present the available treatment options – active surveillance/radical treatment/focal therapy to these patients. The diagnostic modalities used for prostate cancer have the dual problem of false negativity and overdiagnosis.

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Objective: To assess the prognostic significance of positive surgical margins (PSMs) after minimally invasive radical prostatectomy (MIRP) in interaction with other established prognosis factors.

Patients And Methods: We retrospectively analysed data prospectively collected between 1998 and 2010 for 4628 consecutive patients who underwent MIRP for clinically localized prostate cancer. The impact of PSM on biochemical recurrence (BCR), defined as prostate-specific antigen (PSA) >0.

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Purpose: To evaluate the long-term outcomes of patients with prostate cancer who have pathological pT3b N0-Nx, with postoperative PSA < 0.1 ng/ml and no systematic adjuvant treatment.

Materials And Methods: Using a monocentric prospectively maintained database, we identified among 2,142 men who underwent minimally invasive radical prostatectomy, 104 pT3b N0-Nx patients, with postoperative PSA < 0.

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Androgen deprivation therapy is the standard of care for the initial treatment of metastatic prostate cancer. However, the majority of these patients live long enough to experience disease progression despite castration. This scenario is defined as castration-resistant prostate cancer (CRPC) and has a poor outcome and limited options for treatment.

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Purpose: To evaluate the feasibility and the early toxicity of focal brachytherapy in highly selected localized prostate cancer patients.

Methods And Materials: Twenty-one patients underwent a focal brachytherapy between February 2010 and March 2012, representing 3.7% of the cases treated by our group during this period.

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Background: Focal therapy (FT) for prostate cancer (PCa) seems to be part of a natural evolution in the quest to improve the management of early organ-confined disease.

Objective: To assess the morbidity of the initial experience of FT in a tertiary referral center for PCa management.

Design, Setting, And Participants: From 2009 to 2011, a total of 1213 patients with clinically localized PCa were treated at our institution.

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Introduction: To evaluate erectile function among men who had undergone laparoscopic radical prostatectomy and received postoperative medical therapy for erectile dysfunction.

Materials And Methods: We performed a prospective study in men who underwent laparoscopic radical prostatectomy between September 2003 and November 2005 at our center and who received penile rehabilitation after surgery. All patients had antegrade interfascial dissection.

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Introduction: To describe the oncologic outcomes of renal cell carcinoma (RCC) diagnosed in patients and submitted to laparoscopic partial nephrectomy (LPN) in a laparoscopic referral center.

Patients And Methods: We retrospectively analyzed data of 150 consecutive patients with small renal masses and treated with LPN between 2000 and 2010 at a laparoscopic referral center. Pathologic RCC was diagnosed in 137 patients and were included in the oncologic outcome analysis.

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Purpose: To evaluate the long-term efficacy of prostate cancer control and complication rates, in the elderly, after focal therapy with high-intensity focused ultrasound (HIFU).

Materials And Methods: Between June 1997 and March 2000, patients with localized prostate cancer were included into a focal therapy protocol. Inclusion criteria were: PSA ≤ 10 ng/mL, ≤ 3 positive biopsies with only 1 lobe involved, clinical stage ≤ T2a, Gleason score ≤ 7 (3+4), negative CT scan and bone scan.

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Purpose: The retrospective use of prostate cancer tissue is crucial to design tumor marker prognostic studies. We hypothesize that comparison between recent and more historical cases could introduce biases due to stage and grade migration upon time.

Design: We reviewed 544 margin-free specimens from patients treated for clinically localized prostate cancer by radical prostatectomy between 2000 and 2005.

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OBJECTIVE To assess the effect of age and comorbidity on short-term complications, long-term continence and oncological outcome after laparoscopic radical prostatectomy (LRP) for localized prostate cancer. PATIENTS AND METHODS In all, 2048 consecutive men underwent LRP for localized prostate cancer in one institution. Comorbidity was assessed using the Charlson index.

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