Factors Associated with Ureteral Stent Failure in Patients with Malignant Ureteral Obstruction.

Management of malignant ureteral obstruction (MUO) with ureteral stents remains a clinical challenge, often involving frequent stent exchanges attributable to stent failure or other urological complications. We report our institutional experience with ureteral stents for management of MUO, including analysis of clinical factors associated with stent failure. We performed a retrospective review of patients treated with indwelling ureteral stents for MUO in nonurothelial malignancies at our tertiary-care institution between 2008 and 2019.

Contemporary Pure Laparoscopic Robot-Assisted Laparoscopic Radical Nephrectomy: Is the Transition Worth It?

The proportion of robotic procedures continues to rise. The literature reinforces that robotic procedures take longer and are often more costly. We compared cost and perioperative outcomes of laparoscopic radical nephrectomy (LRN) and robot-assisted radical nephrectomy (RARN) at our high-volume center.

Role of the androgen, estrogen, and progesterone receptors in adherent perinephric fat in robotic partial nephrectomy.

To determine whether androgen, estrogen, and/or progesterone signaling play a role in the pathophysiology of adherent perinephric fat (APF). We prospectively recruited patients undergoing robotic assisted partial nephrectomy during 2015-2017. The operating surgeon documented the presence or absence of APF.

Positive Surgical Margins After Robot-Assisted Partial Nephrectomy Predict Long-Term Oncologic Outcomes for Clinically Localized Renal Masses.

For patients with clinically localized renal masses, positive surgical margins (PSMs) after robotic partial nephrectomy (RPN) have been associated with a higher risk of disease recurrence, although some studies have challenged this conclusion. Owing to inconsistent reports and a lack of long-term robotic data, the clinical impact of PSM after RPN remains uncertain. We evaluate long-term (>6 years) survival outcomes after RPN in patients with clinically localized disease with respect to surgical margin status.

Post-chemotherapy Laparoscopic Retroperitoneal Lymph Node Dissection for Mixed Malignant Germ Cell Testicular Tumors.

Introduction: Retroperitoneal lymph node dissection (RPLND) is performed to treat residual disease following chemotherapy for stage II and III testicular cancer. Significant morbidity can be associated with open RPLND. As such, laparoscopic techniques have been demonstrated to be safe and effective in select cases.

Ten-Year Experience with Percutaneous Cryoablation of Renal Tumors: Tumor Size Predicts Disease Progression.

Percutaneous cryoablation (PCA) has emerged as an alternative to extirpative management of small renal masses (SRMs) in select patients, with a reduced risk of perioperative complications. Although disease recurrence is thought to occur in the early postoperative period, limited data on long-term oncologic outcomes have been published. We reviewed our 10-year experience with PCA for SRMs and assessed predictors of disease progression.

Comparing Off-clamp and On-clamp Robot-assisted Partial Nephrectomy: A Prospective Randomized Trial.

Objective: To determine whether performing robot-assisted partial nephrectomy without warm ischemia "off-clamp" results in favorable postoperative renal functional outcomes compared with the on-clamp method.

Methods: We conducted a prospective trial of 80 patients who underwent robot-assisted partial nephrectomy. They were randomized in a 1:1 ratio to undergo the procedure with renal artery clamping or without clamping.

Unplanned 30-Day Encounters After Ureterorenoscopy for Urolithiasis.

Objective: To identify avoidable predictors of postureteroscopy (URS) unplanned encounters and to minimize 30-day encounters.

Materials And Methods: We performed retrospective chart review and telephone surveys on patients who underwent URS for urolithiasis between January and June 2016. Univariate and multivariable analyses evaluated for potential predictors of unplanned encounters.

Development and Validity of a Silicone Renal Tumor Model for Robotic Partial Nephrectomy Training.

Objective: To provide a training tool to address the technical challenges of robot-assisted laparoscopic partial nephrectomy, we created silicone renal tumor models using 3-dimensional printed molds of a patient's kidney with a mass. In this study, we assessed the face, content, and construct validity of these models.

Materials And Methods: Surgeons of different training levels completed 4 simulations on silicone renal tumor models.

Off-clamp robot-assisted partial nephrectomy does not benefit short-term renal function: a matched cohort analysis.

In the interest of renal functional preservation, partial nephrectomy has supplanted radical nephrectomy as the preferred treatment for T1 renal masses. This procedure usually involves the induction of renal warm ischemia by clamping the hilar vessels prior to tumor excision. Performing robot-assisted partial nephrectomy (RAPN) "off-clamp" can theoretically prevent renal functional loss associated with warm ischemia.

Enterocystoplasty 30-day outcomes from National Surgical Quality Improvement Program Pediatric 2012.

Introduction: Enterocystoplasty is an important procedure in the management of children with difficult neurogenic bladder. We report on short-term complications as captured by National Surgical Quality Improvement Program (NSQIP) Pediatric.

Methods: We analyzed NSQIP Pediatric 30-day perioperative data on 114 patients who underwent enterocystoplasty in 2012 and compared those with and without complications.