A Large Retroperitoneal Liposarcoma Mimicking an Angiomyolipoma on Pre-operative Imaging: A Case Report.

Retroperitoneal masses present a diagnostic challenge due to their elusive origin and varied clinical manifestations. Among these masses, retroperitoneal liposarcomas, rare tumors of mesenchymal origin, often grow asymptomatically until compressing surrounding structures, necessitating accurate and early diagnosis. Renal angiomyolipomas (AMLs) have also been reported to mimic retroperitoneal liposarcomas on radiographic imaging, further complicating diagnostic processes.

Transperitoneal Versus Retroperitoneal Robotic-Assisted Partial Nephrectomy in Patients with Obesity.

We aim to compare transperitoneal (TP) and retroperitoneal (RP) robotic partial nephrectomy (RPN) in obese patients. Obesity and RP fat can complicate RPN, especially in the RP approach where working space is limited. Using a multi-institutional database, we analyzed 468 obese patients undergoing RPN for a renal mass (86 [18.

Robot-assisted partial nephrectomy for complex renal tumors: Analysis of a large multi-institutional database.

Introduction: Highly complex renal masses pose a challenge to urologic surgeons' ability to perform robotic partial nephrectomy (RPN). Given the increased utilization of the robotic approach for small renal masses, we sought to characterize the outcomes and determine the safety and feasibility of RPN for complex renal masses from our large multi-institutional cohort.

Methods: We performed a retrospective analysis of patients with R.

Operative and oncological outcomes of salvage robotic radical and partial nephrectomy: a multicenter experience.

We aim to describe the perioperative and oncological outcomes for salvage robotic partial nephrectomy (sRPN) and salvage robotic radical nephrectomy (sRRN). Using a prospectively maintained multi-institutional database, we compared baseline clinical characteristics and perioperative and postoperative outcomes, including pathological stage, tumor histology, operative time, ischemia time, estimated blood loss (EBL), length of stay (LOS), postoperative complication rate, recurrence rate, and mortality. We identified a total of 58 patients who had undergone robotic salvage surgery for a recurrent renal mass, of which 22 (38%) had sRRN and 36 (62%) had sRPN.

The State of Robotic Partial Nephrectomy: Operative, Functional, and Oncological Outcomes From A Robust Multi-Institution Collaborative.

Objective: To describe the most recent surgical, functional, and oncological outcomes of RPN utilizing one of the largest, prospectively maintained, multi-institution consortium of patients undergoing robotic renal surgery.

Materials And Methods: Data was obtained from a prospectively maintained multi-institutional database of patients who underwent RPN for clinically localized kidney cancer between 2018 and 2022 by 9 high-volume surgeons. Demographic and tumor characteristics as well as operative, functional, and oncological outcomes were queried.

A comparison of outcomes between transperitoneal and retroperitoneal robotic assisted partial nephrectomy in patients with completely endophytic kidney tumors.

Introduction: Retroperitoneal robotic partial nephrectomy (RPN) has been shown to have comparable outcomes to the transperitoneal approach for renal tumors. However, this may not be true for completely endophytic tumors as they pose significant challenges in RPN with increased complication rates. Hence, we sought to compare the safety and feasibility of retroperitoneal RPN to transperitoneal RPN for completely endophytic tumors.

A Propensity-Matched Comparison of the Perioperative Outcomes Between Single-Port and Multi-Port Robotic Assisted Partial Nephrectomy: A Report from the Single Port Advanced Research Consortium (SPARC).

Single-port (SP) robotic surgery is a new technology and early in its adoption curve. The goal of this study is to compare the perioperative outcomes of SP to multi-port (MP) robotic technology for partial nephrectomy. This is a prospective cohort study of patients who have undergone robot-assisted partial nephrectomy using SP and MP technology.

Moving away from mannitol infusion for partial nephrectomy: has this altered renal function?

In recent years, research has questioned the theorized renal-protective value of mannitol infusion during partial nephrectomy. This study considers whether the cessation of routine mannitol administration has shown any benefit or detriment to patients in the contemporary era. We retrospectively reviewed a multi-institution database for an association between mannitol administration and subsequent renal function during follow-up.

Magnetic resonance imaging-ultrasound fusion-targeted biopsy combined with systematic 12-core ultrasound-guided biopsy improves the detection of clinically significant prostate cancer: Are we ready to abandon the systematic approach?

Background: Multiparametric (mp) magnetic resonance imaging (MRI)-ultrasound fusion-targeted biopsy (TB) has improved the detection of clinically significant prostate cancer (csCaP) using the Prostate Imaging Reporting and Data System (PI-RADS) reporting system, leading some authors to conclude that TB can replace the 12-core systematic biopsy (SB). We compared the diagnostic performance of TB with SB at our institution.

Methods: Eighty-three men with elevated prostate-specific antigen levels (6.

The role of RENAL score in predicting complications after robotic partial nephrectomy.

Background: The aim of this study was to evaluate the association between tumor complexity based on RENAL nephrometry score and complications.

Methods: We retrospectively identified 2555 patients who underwent RPN for renal cell carcinoma. Major complication was defined as Clavien Grade ≥3.

Does race impact functional outcomes in patients undergoing robotic partial nephrectomy?

Background: The role of race on functional outcomes after robotic partial nephrectomy (RPN) is still a matter of debate. We aimed to evaluate the clinical and pathologic characteristics of African American (AA) and Caucasian patients who underwent RPN and analyzed the association between race and functional outcomes.

Methods: Data was obtained from a multi-institutional database of patients who underwent RPN in 6 institutions in the USA.

A Multi-Institutional Analysis of the Effect of Positive Surgical Margins Following Robot-Assisted Partial Nephrectomy on Oncologic Outcomes.

To determine the effect of positive surgical margins (PSMs) on oncologic outcomes following robot-assisted partial nephrectomy (RAPN) and to identify factors that increase the likelihood of adverse oncologic outcomes. A multi-institutional database of patients who underwent RAPN with complete follow-up data was used to compare recurrence-free survival (RFS) and overall survival (OS) between 42 (5.1%) patients with a PSM and 797 (94.

Do patients with Stage 3-5 chronic kidney disease benefit from ischaemia-sparing techniques during partial nephrectomy?

Objective: To analyse whether selective arterial clamping (SAC) and off-clamp (OC) techniques during robot-assisted partial nephrectomy (RPN) are associated with a renal functional benefit in patients with Stage 3-5 chronic kidney disease (CKD).

Patients And Methods: The change in estimated glomerular filtration rate (eGFR) over time was compared between 462 patients with baseline CKD 3-5 that underwent RPN with main arterial clamping (MAC) (n = 375, 81.2%), SAC (n = 48, 10.

A multi-institutional analysis of 263 hilar tumors during robot-assisted partial nephrectomy.

Hilar tumors pose unique challenges during partial nephrectomy. We present the characteristics and outcomes of 263 patients with hilar tumors undergoing robot-assisted partial nephrectomy (RPN) in the largest series to date. Perioperative, pathologic, functional, and oncological outcomes were compared between 1467 (84.

Barriers to Neoadjuvant Chemotherapy before Radical Cystectomy at a Single Referral Center in South Florida.

Introduction: We investigated barriers to the receipt of neoadjuvant chemotherapy by patients undergoing radical cystectomy.

Methods: After institutional review board approval we performed a retrospective chart review from January 1, 2012 to March 1, 2018 of cases of radical cystectomy with urinary diversion for bladder cancer. Patients were placed in 1 of 3 groups according to eligibility to receive neoadjuvant chemotherapy before undergoing cystectomy, as "NAC" if they received neoadjuvant chemotherapy, "No NAC - Declined" if they were eligible but declined neoadjuvant chemotherapy and "No NAC - Ineligible" if they were clinically ineligible to receive neoadjuvant chemotherapy.

A Single Overnight Stay After Robotic Partial Nephrectomy Does Not Increase Complications.

To evaluate the feasibility of postoperative day 1 (POD1) discharge after robotic partial nephrectomy (RPN) and to determine whether a protocol targeting a shorter length of stay (LOS) is associated with any difference in the rate of postoperative complications. We reviewed a prospectively maintained, multi-institutional database of patients who underwent RPN from September 2013 to September 2016. Three of the six participating surgeons used a protocol that targeted discharge on POD1, whereas three surgeons did not.

Defining Risk Categories for a Significant Decline in Estimated Glomerular Filtration Rate After Robotic Partial Nephrectomy: Implications for Patient Follow-up.

Following partial nephrectomy (PN), it is important to prevent any deterioration in estimated glomerular filtration rate (eGFR). At present there are no evidence-based recommendations on when a nephrology consultation should be requested and how to adjust postoperative management when the risk of renal function decline is high. In an effort to address this void, we used our previously published nomogram to define risk groups for a significant decline in eGFR at 3-15 mo after PN.

Management of high complexity renal masses in partial nephrectomy: A multicenter analysis.

Objective: To determine the safety and efficacy of performing partial nephrectomy (PN) on patients with high nephrometry score tumors.

Patients And Methods: We used a prospectively maintained multi-institutional kidney cancer database to identify 144 patients with R.E.