Publications by authors named "Matvey Tsivian"

Objective: To assess if receiving sequential intravesical chemotherapy (Gemcitabine-Docetaxel, Gem-Doce) therapy was associated with similar oncologic efficacy to bacillus Calmette-Guérin (BCG) in patients with treatment-naïve, high-risk non-muscle invasive bladder cancer (HR-NMIBC).

Methods: Single-center, retrospective cohort study of 80 patients with HR-NMIBC initiating first-line Gem-Doce or BCG between August 2020 and August 2023. Surveillance was conducted with cystoscopy, urine cytology, and cross-sectional imaging.

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: This study aims to compare perioperative morbidity and drainage tube dependence following open radical cystectomy (ORC) with ileal conduit (IC) or cutaneous ureterostomy (CU) for bladder cancer. : A single-center, retrospective cohort study of patients undergoing ORC with IC or CU urinary diversion between 2020 and 2023 was carried out. The 90-day perioperative morbidity, as per Clavien-Dindo (C.

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Objective: To describe the technique for surgeon-administered, ultrasound-guided transversus abdominis plane (SU-TAP) blocks performed during radical cystectomy as a component of multimodal, perioperative pain management.

Methods: Retrospective, case series of patients receiving SU-TAP blocks just prior to incision for RC. TAP blocks were performed by the surgeon with a standard technique using US guidance to instill an anesthetic solution.

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Objective: We conducted an analysis of the American College of Surgeons National Surgical Quality Improvement Program database for minimally-invasive partial nephrectomy cases reported with the goal to identify pre- and peri-operative variables associated with length of stay (LOS) greater than 3 days and readmission within 30 days.

Methods: Records from 2008 to 2018 for "laparoscopy, surgical; partial nephrectomy" for prolonged LOS and readmission cohorts were compiled. Univariate analysis with Chi-square, -tests, and multivariable logistic regression analysis with odds ratios (ORs), -values, and 95% confidence intervals assessed statistical associations.

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Upper urinary tract urothelial carcinoma (UTUC) accounts for 5% to 10% of urothelial carcinomas and two-thirds are high-grade at the time of diagnosis. The gold standard management of high-grade UTUC is radical nephroureterectomy (RNU). Despite primary treatment, disease recurrence involves the bladder in 22% to 47% of cases.

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Introduction And Hypothesis: Operating room turnover times are highly variable, with longer times having a significant negative impact on hospital costs, surgeon volume, and satisfaction. The primary aim of this randomized trial was to examine the impact of a verbalized time goal on the likelihood of meeting institutional goals.

Methods: This is a prospective, single-blind, randomized study conducted across four operative sites: inpatient main campus and three outpatient centers.

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Purpose: To calculate the frequency of infection and acute urinary retention (AUR) following transperineal (TP) prostate biopsy at a single high-volume academic institution and determine risk factors for developing these post-biopsy conditions.

Methods: Men undergoing TP prostate biopsy from 2012 to 2022 at our institution were retrospectively identified and chart reviewed. TP biopsies were performed with TR ultrasound (TRUS) guidance with anesthesia using a brachytherapy grid template.

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Introduction: There is an ongoing debate as to the appropriate regimen of antibiotic prophylaxis with transperineal (TP) biopsy. The objective of this study was to report the rate of infection following TP biopsy at a high-volume institution and assess the impact of single dose antibiotics at the time of biopsy versus outpatient antibiotics in preventing postprocedural infections.

Materials And Methods: Records of men undergoing TP prostate biopsy from 2012 to 2022 were reviewed.

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Purpose: Cutaneous ureterostomy (CU) urinary diversion after radical cystectomy has been relegated to highly comorbid patients due to presumed rates of stenosis and drainage tube dependence. Rates of stricture as high as 70% have been reported. Though a variety of techniques have been developed to obviate the need for prolonged stenting, CU remains uncommonly performed.

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Objectives: To examine the oncological safety of simultaneous resection of bladder tumor and prostate in the presence of non-muscle invasive high-grade urothelial carcinoma of the bladder (UCB).

Materials And Methods: Between 2007 and 2019, 170 men with high-grade UCB who had a follow-up of at least 12 months were included in the study, including 123 with transurethral resection of bladder tumor (TURBT) only and 47 with simultaneous TURBT and transurethral resection of the prostate (TURP). We recorded and compared patients' clinicopathological parameters, recurrence, and progression rates during the follow-up period, as well as time to UCB recurrence in the bladder and the prostatic urethra/fossa.

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Introduction: Women, underrepresented minorities, and international medical graduates are underrepresented in urology. We sought to compare demographics of leaders in academic urology to urology faculty and academic medical faculty.

Materials And Methods: The Association of American Medical Colleges provided academic medical faculty demographics.

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Purpose: Conversions from partial to radical nephrectomy are uncommon and reports on this topic are rare. In this study we present a detailed analysis of conversions from partial to radical nephrectomy in a single-institutional contemporary experience and provide an analysis of preoperative risk factors.

Materials And Methods: Patients who underwent converted (cases) and completed (controls) partial nephrectomy from 2000 to 2015 were matched 1:1 for analysis.

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Objective: To assess the impact of trainee involvement in surgery on perioperative and oncological outcomes of patients undergoing radical cystectomy (RC).

Materials And Methods: We reviewed the records of patients undergoing RC for urothelial carcinoma between 2000 and 2015 at our institution. Trainee level was categorized as fellow, chief, senior and junior residents.

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Objective: To report perioperative, renal functional and oncologic outcomes for patients undergoing partial or radical nephrectomy for cT2 renal masses.

Methods: Retrospective review of patients who underwent partial (n = 72) or radical nephrectomy (n = 379) for cT2 renal masses from 2000 to 2016. After propensity adjustment using inverse probability weighting, the following were compared by surgery (partial or radical nephrectomy): complications, renal function measured by estimated glomerular filtration rate as continuous and as <60 mL/min/1.

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Introduction: The aim of our study was to evaluate whether a biopsy from the tumor base after transurethral resection of bladder tumor (TURBT) has an impact on subsequent management of patients with bladder tumors. While tumor base biopsy at the completion of TURBT is a common practice, there is no definition of its role within the major international professional guidelines.

Material And Methods: We retrospectively reviewed the records of consecutive patients undergoing TURBT between 2015 and 2019 at our institution.

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Introduction: While numerous current clinical trials are testing novel salvage therapies (ST) for patients with recurrent nonmuscle invasive bladder cancer (NMIBC) after bacillus Calmette-Guérin (BCG), the natural history of this disease state has been poorly defined to date. Herein, we evaluated oncologic outcomes in patients previously treated with BCG and ST who subsequently underwent radical cystectomy (RC).

Methods: We identified 378 patients with high-grade NMIBC who received at least one complete induction course of BCG (n = 378) with (n = 62) or without (n = 316) additional ST and who then underwent RC between 2000 and 2018.

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Article Synopsis
  • Radical cystectomy (RC) is a key treatment for non-metastatic muscle-invasive and certain high-risk non-muscle invasive bladder cancers, often involving pelvic lymph node dissection (PLND) to check for hidden metastases.
  • The practice of PLND has grown since 1950 and is now endorsed by the National Comprehensive Cancer Network (NCCN) due to benefits like better staging and potential improvement in treatment outcomes.
  • Despite various studies on the best methods for lymphadenectomy, a clear consensus on the ideal dissection extent is lacking, highlighted by recent trials showing no significant 5-year outcome improvement with more extensive dissection techniques.
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Background: Although grading systems have been proposed for chromophobe renal cell carcinoma (ChRCC), including a three-tiered system by Paner et al (Paner GP, Amin MB, Alvarado-Cabrero I, et al. A novel tumor grading scheme for chromophobe renal cell carcinoma: prognostic utility and comparison with Fuhrman nuclear grade. Am J Surg Pathol 2010;34:1233-40), none have gained clinical acceptance, and the World Health Organization (WHO) currently recommends against grading ChRCC.

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Objective: We evaluated the natural history and long-term outcomes of incidentally detected prostate cancer (PCa) at radical cystectomy (RC) for bladder cancer (BCa).

Patients And Methods: We identified 1,640 male patients who underwent RC between 1992 and 2012. Patients were stratified as clinically insignificant and clinically significant PCa, based on Grade Group (GG) 1 and ≥2, respectively.

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Objectives: The optimal management approach for synchronous bilateral renal masses is unknown, particularly regarding surgical sequencing of bilateral partial nephrectomy (PN). We evaluated the impact of simultaneous vs. staged bilateral PN on renal functional, perioperative, and oncologic outcomes.

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Objectives: Anxiety and depression have been associated with inferior overall survival for several malignancies, including metastatic renal cell carcinoma (RCC). However, there is minimal data evaluating this association for localized RCC. We evaluated the association of anxiety or depression with survival in patients with surgically treated localized clear cell RCC (ccRCC).

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Background: The purpose of the study was to examine the outcomes of salvage prostate cryoablation for managing patients with local recurrence after primary cryotherapy.

Patients And Methods: The records of 108 patients treated with salvage prostate cryoablation for biopsy-proven local recurrence after primary cryotherapy were retrospectively reviewed. Oncological outcome was defined by the rate of biochemical recurrence (BCR) after salvage ablation using Phoenix criteria.

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Background And Objectives: To determine the efficacy of unilateral transversus abdominis plane (TAP) block versus wound local infiltration for postoperative pain following laparoscopic radical prostatectomy (LRP).

Methods: Data of consecutive patients who underwent extraperitoneal LRP and received either wound infiltration or unilateral TAP block for analgesia were retrospectively analyzed. The patients were divided into 2 groups based on the technique used.

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Ureteral reconstructions pose a challenge for urologists. We describe a novel reconstructive technique for long upper ureteral obliteration with an intrarenal pelvis. The obliterated ureteral segment was excised and the healthy segment of the ureter was spatulated and anastomosed end-to-side to the intrarenal lower calyx (ureterocalycostomy).

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