Laparoscopic nephrectomy: initial case report

European basic laparoscopic urological skills: a feasibility study in a setting for robot-assisted surgery

Introduction

Since the introduction of laparoscopy, a variety of training sets and tasks have been introduced for surgical education of minimally-invasive surgery. The implementation of the European Basic Laparoscopic Urological Skills into the training and education program of future laparoscopic surgeons created a new era and provided a standardized approach for urological surgical training. However, these tasks have not yet been evaluated in a setting of robot-assisted surgery. The aim of this study is to evaluate the feasibility of the implementation of the four E-BLUS tasks into training modules of robot-assisted surgery.

Methods

A cohort of 31 robotic surgeons (group A: experienced, group B: novices) performed these tasks in two different institutions by using the latest generation of robotic surgical platforms. Time performance and failure rate were assessed and statistically analyzed.

Results

The groups demonstrated a statistically significant difference regarding time performance in half of the tasks involving fine surgical skills (cutting and knotting, p = 0.01 and p = 0.02, respectively) but no significant difference in tasks involving manual ambidexterity (p = 0.14 and 0.12, respectively). A low failure rate during the attempts of the group of novice robotic surgeons could be observed.

Discussion

The use of the E-BLUS tasks in a training setting of robot-assisted surgery is feasible and can lead to the development of surgical skills needed during robot-assisted surgical procedures. It is a relatively low-cost dry lab option for the introduction of novice robotic surgeons.

The not so 'simple' laparoscopic nephrectomy: Experience with 3D laparoscopy from a tertiary care centre

INTRODUCTION

Laparoscopic simple nephrectomy (LSNx) is among the gold standard options for management of selected poorly functioning and most non-functioning kidneys (PFK/NFKs). Our objective was to audit our patients who had undergone LSNx for benign causes and assess their perioperative outcomes and analyse the factors correlating with these outcomes.

MATERIALS AND METHODS

We reviewed our prospectively collected data of patients with PFK/NFKs due to benign causes who underwent a LSNx on a three-dimensional (3D) system via a transperitoneal approach between January 2017 and June 2023. Details on clinical profile, radiological findings and peri-operative details were recorded and analysed.

RESULTS

A total of 302 patients underwent LSNx in the study duration. Urolithiasis was the most common cause of PFK/NFKs in 66.5% of patients followed by pelvi-ureteric junction obstruction in 14.9%. Rate of conversion to open surgery was 5.3%. Final histopathology revealed chronic pyelonephritis in 82% patients and Xanthogranulomatous pyelonephritis (XGPN) in 14%. Multivariate analysis revealed presence of pre-operative fat stranding on imaging, larger kidney size, presence of XGPN and pyonephrosis to be significantly associated with longer operation times. Prior renal surgery, positive urine culture, presence of XGPN and a higher body mass index was associated with a longer hospital stay and increased rate of post-operative complications.

CONCLUSION

LSNx is commonly employed for management of PFK/NFKs from various aetiologies, the most common of which is urolithiasis in our experience. Multiple clinico-radiological factors as described correlated with longer operative times and prolonged hospital stay, which aids in surgical planning and patient counselling.

Evaluation of acute postoperative pain management after living donor nephrectomy during the transition from open access to laparoscopic and minimally invasive robotic surgical approach

Background

Living donor nephrectomies (LDN) at our institution transitioned from open access to laparoscopic and, more recently, to a minimally invasive robotic surgical approach between 2019 and 2022. Concurrently, postoperative analgesia transitioned from regional anesthesia to intravenous patient-controlled analgesia (PCA) and eventually to simple analgesics with additional rescue analgesic agents, as needed, in accordance with individual physicians' preferences. This retrospective study was designed to evaluate the impact of these changes on surgical practice on the analgesic requirements and effectiveness of postoperative pain management.

Methods

Electronic records of all LDN cases operated between January 2019 and March 2022 were accessed, and a comparative analysis of patient demographics, surgical approach, duration of surgery, postoperative pain scores, and the analgesics administered within the first 48 h was performed.

Results

LDN (n = 527) was performed via laparoscopic (n = 432, 82%), robotic (n = 87, 17%), and open (n = 8, 2%) approaches. All patients were administered regular paracetamol 1 g 6 hourly. IV PCA was used in 85% of cases, predominantly in the laparoscopic (99%) and open (75%) groups (LG and OG, respectively); in contrast, the robotic group (RG) was mostly treated without PCA (81.7%). A variety of analgesic techniques were employed for the remaining patients, including epidural (25% of OG) and rectus sheath/transversus abdominis plane (TAP) block (2% of LG). Additional rescue analgesics were administered to 98% of the patients; 92% of LG needed 1-3 analgesic agents, whereas all of the OG and 37% of RG needed 1-2 rescue analgesics. No correlation was found between patient demographics and surgery duration on pain scores or analgesic requirements.

Conclusions

Robotic surgery was associated with the lowest postoperative pain scores and analgesic demand; laparoscopic resection was the most painful of all.

Incidence of Proteinuria Post Radical Nephrectomy in Comparison to Partial Nephrectomy: A Comparative Study

Objectives The objective of this study is to enhance understanding of the incidence and impact of proteinuria following nephrectomy, to guide clinical decision-making, and to optimize post-operative monitoring strategies. Specifically, the study seeks to compare the incidence of proteinuria in patients undergoing radical nephrectomy and those receiving partial nephrectomy, thereby contributing valuable insights into post-surgical outcomes that could inform treatment approaches and improve patient care. Methods It is a retrospective cohort design, analyzing clinical data from patients who underwent radical or partial nephrectomy in King Abdulaziz Medical City (KAMC), Riyadh, Saudi Arabia, between 2014 and 2022. Data was entered in Excel (Microsoft Corporation, Redmond, Washington, United States) and analyzed in IBM SPSS Statistics for Windows, Version 29.0 (Released 2023; IBM Corp., Armonk, New York, United States). Results There was a total of 310 participants, predominantly male (n=167, 53.9%), with radical nephrectomy (n=188, 60.6%) being more common than partial (n=99, 31.9%). Post surgery, a significant decline in estimated glomerular filtration rate (eGFR) was noted in radical nephrectomy at one to three months (73.09 mL/minute) compared to partial nephrectomy (90.99 mL/minute) (p<0.001), with similar trends at 6-12 months. The mortality rate was low at 1.6% (n=5), with significant associations between preoperative eGFR and mortality (p=0.008). Proteinuria post operation was observed in 27.1% (n=84), with significant differences in proteinuria levels between radical (107.10 mg/dL) and partial nephrectomy (62.80 mg/dL) (p=0.031). Conclusion Our study found that radical nephrectomy was more common and associated with a greater decline in postoperative eGFR compared to partial nephrectomy. Proteinuria was significantly higher in radical nephrectomy patients, and preoperative eGFR was linked to mortality risk, highlighting the need for careful monitoring in high-risk individuals.

Urology Training in sub-Saharan Africa: A Survey of Training Directors

Background

Urology is one of the most rapidly evolving and technologically advanced surgical specialties. However, training programs in Sub-Saharan Africa (SSA) face unique challenges. This study aimed to assess the current status of urology training in SSA and identify areas for improvement, providing crucial insights into the strengths and limitations of these programs.

Methods

A 24-discrete items online survey was developed with "Google Forms" in English and French. The questionnaire was composed of two parts. The first part assessed general information about the urology training, and the second part evaluated the consultant's or department head's ability to perform and teach endourology procedures.

Result

A total of 25 responses were received from 18 countries. The oldest training center is the University of Cape Town, South Africa; the program started in 1950. The number of consultants in the department ranges from 1 to 12, with an average of 4.79. Twenty of the training sites have a compulsory general surgery clinical attachment in their program. Fourteen of the training sites stated that research is mandatory in their curriculum. Fourteen of the centers reported providing laparoscopic urology surgery. Cystoscopy is the most mastered procedure and percutaneous nephrolithotomy (PCNL) is the most difficult procedure to gain any experience with by residents.

Conclusion

Urology training in sub-Saharan Africa started late but is increasing in number through time. Urology training in Africa faces multiple challenges, including inadequate number of experts, limited availability of advanced equipment and simulation-based training sites. Training institutions should be encouraged to facilitate research and basic urological skills training.

Comparison of Intraoperative Results of Simple Open and Laparoscopic Nephrectomies in the Treatment of Benign Renal Pathologies in a First-Level Center in Mexico City

OBJECTIVES

To assess the efficacy and safety of simple open versus laparoscopic nephrectomies for treating benign renal pathologies, with a focus on comparing the prevalence of surgical complications at a first-level center in Mexico City.

METHODS

A retrospective analysis spanning 2010-2020 was conducted where all patients undergoing simple nephrectomy for benign conditions were included and stratified into open and laparoscopic surgery groups. Variables analyzed included urological history, laboratory findings, surgical outcomes, complications, and histopathological results. Statistical comparisons employed Student's t-test for means and the chi-square test for frequencies. Additionally, binary logistic regression was utilized to identify predictors associated with conversion from laparoscopic to open surgery.

RESULTS

The laparoscopic approach showed significant advantages in intraoperative bleeding (p=0.008) and intensive care unit stay (p=0.04). The conversion rate from laparoscopic to open surgery was 19.23%, with no significant risk factors identified for conversion.

CONCLUSIONS

Laparoscopic simple nephrectomy proves to be a secure and effective method in specialized urological centers with skilled surgeons, offering superior intraoperative outcomes compared to open surgery. It effectively reduces intraoperative hemorrhage, minimizes blood transfusion needs, and shortens hospital stays. Nonetheless, challenges such as equipment availability, costs, and surgeon expertise must be addressed. Further research focused on postoperative complications is crucial to advocate for broader adoption of laparoscopic nephrectomy as the preferred standard for treating relevant urological conditions, emphasizing substantial advantages over traditional open approaches.

Surgical Management of Renal Cell Carcinoma: Comparisons of open and laparoscopic approaches

Objectives

Renal cell carcinoma (RCC) is a leading urological malignancy with an age-standardised incidence rate of 2.5 per 100,000 per year in Oman. Experts are inclined towards the early detection and use of minimally invasive technology for the treatment of RCC. This study aimed report the shifting trend in the clinical presentation and management of RCC in Oman, comparing the outcomes of laparoscopic and open nephrectomy.

Methods

This retrospective study included adult RCC patients from Sultan Qaboos University Hospital, Muscat, Oman, diagnosed from 2011-2022. Patient biodata, mode of presentation, diagnostic modality, final histopathology and details of treatment received including the perioperative outcomes were analysed.

Results

A total of 56 patients that underwent surgical treatment for RCC, 34 underwent laparoscopic nephrectomy (LN) and 22 underwent open nephrectomy (ON). The mean ages in the LN and ON groups were 53.82 ± 13.44 years and 56.22 ± 15.00 years (P = 0.53), respectively. There were 47 patients of Omani descent and 9 patients were expatiates. The patients' mean tumour size was 6.25 ± 3.16 cm and 9.23 ± 5.20 cm for the LN and ON groups, respectively; 55.35% of the RCC cases were incidentally diagnosed. A trend towards LN was observed.

Conclusion

This study found a trend towards early diagnosis of RCC in Oman, with the majority of cancers being discovered incidentally in the studied period. LN is more commonly used in the surgical management of RCC with acceptable morbidity. These trends remain aligned with those found in the global literature on RCC.

Trends and Costs of Minimally Invasive Surgery for Kidney Cancer in the US: A Population-based Study

OBJECTIVE

To analyze temporal trends and costs associated with the use of minimally invasive surgery (MIS) for kidney cancer in the US over the past decade. To examine the impact of social determinants of health (SDOH) on perioperative outcomes.

METHODS

The PearlDiver Mariner, a national database of insurance billing records, was queried for this retrospective observational cohort analysis. The MIS population was identified and stratified according to treatment modality, using International Classification of Diseases and current procedural terminology codes. SDOH were assessed using International Classification of Diseases codes. Negative binomial regression was used to evaluate the overall number of renal MIS and Cochran-Armitage tests to compare the utilization of different treatment modalities, over the study period. Multivariable logistic regression analysis identified predictors of perioperative complications.

RESULTS

A total of 80,821 MIS for kidney cancer were included. Minimally invasive partial nephrectomy adoption as a fraction of total MIS increased significantly (slope of regression line, reg. = 0.026, P <.001). Minimally invasive radical nephrectomy ($26.9k ± 40.9k) and renal ablation ($18.9k ± 31.6k) were the most expensive and cheapest procedures, respectively. No statistically significant difference was observed in terms of number of complications (P = .06) and presence of SDOH (P = .07) among the treatment groups. At multivariable analysis, patients with SDOH undergoing minimally invasive radical nephrectomy had higher odds of perioperative complications, while renal ablation had a significantly lower probability of perioperative complications.

CONCLUSION

This study describes the current management of kidney cancer in the US, offering a socioeconomic perspective on the impact of this disease in everyday clinical practice.

A novel mini-retractor for retroperitoneal laparoscopic partial nephrectomy

BACKGROUND

Retroperitoneal partial nephrectomy (RLPN) is the premier treatment for localized renal tumors despite narrow operation space. Many efforts have been taken to facilitate the operation of RLPN, but the optimal resolution remains debatable.

OBJECTIVE

To explore the feasibility of using Mini-lap to improve workspace and surgical vision in RLPN.

DESIGN, SETTING, AND PARTICIPANTS

A multicenter retrospective review of 51 patients who underwent RLPN with Mini-lap from January 2018 to December 2020 was conducted.

SURGICAL PROCEDURE

Standard RLPN under three poles was performed in all cases. We highlighted the usage of Mini-lap (Teleflex Minilap percutaneous Surgical System) as a novel retractor in RLPN.

OUTCOME AND MEASUREMENTS AND STATICAL ANALYSIS

Demographics, preoperative, intraoperative, and postoperative outcomes were assessed.

RESULTS AND LIMITATIONS

All 51 cases completed RLPN with three ports successfully and no conversion to open surgery. The mean diameter of tumors was (3.53 ± 1.05) cm, in which 62.7% (32/51) were located anteriorly. The operation time and warm ischemic time (WIT) were (86.7 ± 15.9) min and (25.6 ± 5) min respectively. Minor complications (Clavien grade 1-2) occurred in 6 cases. The limitations were small sample size, retrospective design, and absence of control.

CONCLUSIONS

Mini-lap could be used as a mini-retractor in RLPN, sparing extra assistant ports, expanding workspace, and optimizing vision.

PATIENT SUMMARY

With highlights of larger workspace and less instrument interference, mini-lap could be applied in retroperitoneal laparoscopic partial nephrectomy.

Laparoscopic Retrograde Nephrectomy as a Troubleshooting Technique to Prevent Open Conversion: The Technique Description With a Review of 40 Cases

Introduction Laparoscopic nephrectomies are safe, with low complication rates in skilled hands. However, traditional approaches may be unsuitable for conditions such as post-renal abscesses, long-standing urinomas, non-functioning kidneys post-pyeloplasty, pyelolithotomies, post-partial nephrectomy recurrences, tuberculous kidneys, pyelonephritis, and redo-renal surgeries. This study describes a modified retrograde nephrectomy technique and its outcomes in 40 cases. Methods We reviewed 40 cases where the retrograde nephrectomy technique was used. Surgeons opted for this method based on intraoperative findings and initial difficulties in accessing the lower pole area. Results Traditional dissection was challenging due to adhesions in the lower pole. The retrograde technique, starting from the renal hilum, allowed early ligation of renal arteries and veins, reducing bleeding risks and facilitating safer caudal dissection. Conclusions The retrograde nephrectomy technique offers a safer and more efficient alternative for complex nephrectomies. Early vascular control minimizes hemorrhage risk, making it a valuable method in challenging renal surgeries.

Three-Dimensional Laparoscopic Nephrectomy for Benign Nonfunctioning Kidneys: A Single-Center Initial Experience

BACKGROUND

There are several types of benign renal diseases, such as urological stones, ureteropelvic junction obstruction, renal vascular disease, and inflammation, which are responsible for nonfunctioning kidneys. Laparoscopic nephrectomy (LN) is the gold standard for treating nonfunctioning kidneys with complications. This study presents the results of our initial experiences with 3D laparoscopic nephrectomy (3D-LN) for benign, nonfunctioning kidneys.

METHODS

From July 2021 to July 2023, 40 consecutive patients who underwent 3D transperitoneal laparoscopic nephrectomy were retrospectively evaluated at the Department of Urology and Department of General Surgery, Hue Central Hospital, Hue, Vietnam. Patient demographics, intraoperative and early postoperative results, postoperative recovery, complications, and three-month follow-up results were recorded.

RESULTS

The mean age was 58.35 ± 14.9 years. There were 13 (32.5%) male and 27 (67.5%) female patients. Flank pain was the main reason for hospitalization in 33 cases (82.5%); the common cause of a nonfunctioning kidney was urological stones (62.5%). Twenty-three out of 40 patients underwent a left nephrectomy. The average operative time was 92.57 ± 28.69 minutes. A statistically significant difference in surgery time was found between the group with no adhesion and the group with mild adhesion, as well as between the first 19 patients and the last 18 patients (p <0.05). The mean blood loss was 51.62 ± 24.35 ml. Three cases were converted to open surgery due to severe adhesions. The postoperative complications rate was 8.1%. The average length of the postoperative hospital stay was 7.89 ± 3.59 days.

CONCLUSIONS

Three-dimensional laparoscopic nephrectomy is a safe and effective method that increases depth perception and spatial orientation for surgeons and can compensate for the remaining shortcomings of traditional 2D systems.

Laparoscopic Right Donor Nephrectomy: A Two-Center Comparative Study

Introduction As the field of laparoscopic living donor nephrectomy (LLDN) has progressed over the years, there has been a growing emphasis on optimizing surgical techniques and outcomes to ensure the safety and well-being of living kidney donors. The early experiences with right LLDN, marked by challenges and concerns such as high conversion rates to open surgery and early graft loss due to technical reasons, prompted a reevaluation of the approach toward right-sided donor nephrectomies. In this article, we aim to compare the safety and efficacy of right LLDN to left LLDN performed in our centers and to provide valuable insights that can ultimately enhance patient outcomes and ensure the well-being of living organ donors. Methods Between January 2018 and January 2022, we conducted 16 cases of right LLDN and compared them with 134 cases of left LLDN procedures done in the Kingdom of Bahrain and Jordan over the same time period. We analyzed differences in donor age, sex, operative time, warm ischemia time (WIT), graft function, complications, and conversion to open technique. Patient data and surgical outcomes were extracted from medical records and surgical databases. Statistical analysis was conducted to identify significant differences between the two groups. Categorical variables such as complications and safety outcomes were compared using chi-square tests and logistic regression analysis. The primary outcomes of interest included safety metrics such as complication rates, vascular complications, graft loss, and postoperative serum creatinine levels for the recipients. Results Our study showed similar demographics in both groups. However, the operative time was shorter for the left LLDN, with 81 minutes compared to 96 minutes for the right. Warm ischemia times (WITs) were comparable at 4.5 minutes for the left and 5.2 minutes for the right. There was less incidence of delayed graft function on the left side (none in the left group compared to one case in the right group). Both groups had similar six-month graft function in terms of serum creatinine levels (0.98 mg/dL for the left and 1.2 mg/dL for the right), hospital stays (2.5 days for the left and 2.8 days for the right), and estimated blood loss (EBL) (90 mL for the left and 50 mL for the right). Additionally, no blood transfusions were required in either group, but there was one case of conversion to open surgery in the right LLDN group. Conclusion Our data confirm the safety and efficacy of the right LLDN, consistent with the current literature. This increases the cumulative evidence supporting the use of laparoscopic retrieval on the right side when indicated.

Initial Experiences of Laparoscopic Nephrectomy in a Tertiary Oncology Center: An Analysis of 142 Cases

INTRODUCTION

Kidney tumors have an important place among urological malignancies. The increased utilization of imaging methods has led to a rise in renal cell carcinoma (RCC) diagnoses, albeit with declining mortality rates, particularly in developed countries. Radical nephrectomy remains the gold standard treatment. The aim of this study was to share a tertiary oncology hospital's initial experiences with laparoscopic nephrectomy.

MATERIALS AND METHODS

This retrospective study analyzes data from patients who underwent laparoscopic nephrectomy, focusing on demographic characteristics, tumor features, and operative outcomes. Information regarding age, gender, tumor size, operative details, and pathology results was collected and analyzed.

RESULTS

One hundred forty-two patients were included in the study; 69 (48.60%) were female and 73 (51.40%) were male. The mean age of the patients was 57.11 ± 12.6 years, with tumors primarily located on the left kidney (52.80%). The mean tumor size was 53.01 ± 24.01 mm. Intraoperative complications included the need for conversion to open surgery in five cases and vascular, pneumothorax, or duodenal injuries in a subset of patients. However, postoperative complications, such as sepsis or mortality, were not observed.

DISCUSSION

Despite an initial learning curve associated with longer operation times, laparoscopic techniques offer benefits, including reduced blood loss, faster recovery, and improved cosmetic outcomes. Histologically, clear cell RCC was the most common tumor type encountered. This study underscores the safety and efficacy of laparoscopic radical nephrectomy, advocating for its widespread adoption while emphasizing the importance of surgeon experience and patient selection in optimizing outcomes.

A Narrative Review on Robotic Surgery as Treatment for Renal Cell Carcinoma with Inferior Vena Cava Thrombus

Renal cell carcinoma (RCC) is a common diagnosis, of which a notable portion of patients present with an extension into the venous circulation causing an inferior vena cava (IVC) tumor thrombus. Venous extension has significant implications for staging and subsequent treatment planning, with recommendations for more aggressive surgical removal, although associated surgical morbidity and mortality is relatively increased. The methods for surgical removal of RCC with IVC thrombus remain complex, particularly surrounding the use of robot-assisted surgery. Robot assistance for radical nephrectomy in this context is recently emerging. Thrombus level has important implications for surgical technique and prognosis. Other preoperative considerations may include location, laterality, size, and wall invasion. The urology literature on treatment of such tumors is largely limited to case series and institutional studies that describe the feasibility of various surgical options for these complex tumors. Further understanding of the outcomes and patient-specific risk factors would shed increased light on the optimal treatment for such cases. This narrative review provides a thorough overview on the previously reported use of robot-assisted nephrectomy in RCC with IVC thrombus to inform further studies which may optimize outcomes and guide shared decision-making.

Evaluation of predictive factors for i-CLARAS (intraoperative complications in laparoscopic renal and adrenal surgery): a multicentre international retrospective cohort study

The laparoscopic approach represents the standard of treatment for renal and adrenal diseases, and its use is increasing even outside referral centres. Although most procedures are routinely performed, intraoperative complications do not occur, and the rate and predictive factors of these complications have not been established. The aim of this study was to evaluate the incidence and type of intraoperative complications and to identify predictive factors in patients undergoing laparoscopic renal and adrenal surgery. This was a cohort, multicentre, international retrospective study. Patients who underwent laparoscopic renal and adrenal surgeries between April 2017 and March 2022 were included in the study. Bivariate analysis was performed using contingency tables and the χ2 test for independent samples to compare qualitative variables and the T test and Mood test for continuous variables. Multivariate analysis was performed using a logistic regression model to obtain adjusted odds ratios. A total of 2374 patients were included in the study. Intraoperative complications were reported for 8.09% of patients who underwent renal surgery, with the most common complications reported being hollow viscus and vascular complications, and for 6.75% of patients who underwent adrenal surgery, with the most common complication reported being parenchymatous viscous complications. Multivariate analysis revealed that both adrenal and renal surgery radiological preoperative factors, such as invasive features during adrenalectomy and the RENAL score during nephrectomy, are predictive factors of intraoperative complications. In contrast to existing data, surgeon experience was not associated with a reduction in the incidence of perioperative complications.

Early introduction of simulation in the medical curriculum: the MedInTo perspective

Despite the increasing body of evidence supporting the use of simulation in medicine, a question remains: when should we introduce it into the medical school's curriculum? We present the experience and future perspectives of the MD program in Medicine and Surgery of University of Turin-MedInTo. Since its launch, MedInTo has been dedicated to integrating innovative teaching approaches at the early stages into the medical curriculum. Herewith, we describe a case-based approach for our activities, which includes the utilization of simulation for emergency medical care training for students and the integration of virtual and augmented reality technology. Dedicated surgical training activities using virtual-augmented reality and life-like simulator for students are also described.

A low-cost unity-based virtual training simulator for laparoscopic partial nephrectomy using HTC Vive

Laparoscopic education and surgery assessments increase the success rates and lower the risks during actual surgeries. Hospital residents need a secure setting, and trainees require a safe and controlled environment with cost-effective resources where they may hone their laparoscopic abilities. Thus, we have modeled and developed a surgical simulator to provide the initial training in Laparoscopic Partial Nephrectomy (LPN-a procedure to treat kidney cancer or renal masses). To achieve this, we created a virtual simulator using an open-source game engine that can be used with a commercially available, reasonably priced virtual reality (VR) device providing visual and haptic feedback. In this study, the proposed simulator's design is presented, costs are contrasted, and the simulator's performance is assessed using face and content validity measures. CPU- and GPU-based computers can run the novel simulation with a soft body deformation based on simplex meshes. With a reasonable trade-off between price and performance, the HTC Vive's controlled soft body effect, physics-based deformation, and haptic rendering offer the advantages of an excellent surgical simulator. The trials show that the medical volunteers who performed the initial LPN procedures for newbie surgeons received positive feedback.

Laparoscopic Radical Nephrectomy with Transperitoneal Approach for Large Renal Tumors: Standardized Surgical Technique and Outcomes

Background: Minimally invasive surgery is used only in selected cases of renal masses greater than 7 cm, and few studies exist in this setting. This study aimed to evaluate the safety and effectiveness of a laparoscopic surgical approach for the treatment of large renal tumors using a standardized technique. Materials and Methods: Data of patients who underwent laparoscopic nephrectomy (LN) using the transperitoneal approach were retrospectively evaluated from December 2019 to September 2022. The study population was divided into two groups: patients with renal masses <7 cm (Group A) and those with renal masses ≥7 cm in diameter (Group B). The intraoperative and postoperative outcomes were compared. Results: Forty patients were enrolled (16 in Group A and 24 in Group B) in this study. Although significant difference in terms of age and American Society of Anesthesiologists score were detected, the two groups did not differ in mean operative time (130 minutes standard deviation [SD] ± 64 versus 148 minutes DS ± 56; P = .376), intraoperative complications (0% versus 8.3%; P = .508), need for postoperative transfusion (12% versus 12%; P > .999), and length of stay (3.38 DS ± 0.62 days versus 3.92 DS ± 2.47; P = .313). One patient had a local recurrence and died ∼13 months after surgery. Furthermore, 2 patients developed trocar-site incisional hernia in Group B. Conclusion: In this cohort of patients, LN for large renal tumors appeared to be safe and feasible. Larger mass dimension does not appear to influence the outcomes when the surgery is performed using a standardized technique by experienced surgeons.

Necessity of prophylactic drainage tube in retroperitoneal laparoscopic nephroureterectomy with open distal ureterectomy: A matched-pair analysis

OBJECTIVES

To assess the necessity of prophylactic drain placement in retroperitoneal laparoscopic nephroureterectomy with open distal ureterectomy for upper tract urothelial cancer.

METHODS

Between July 2011 and March 2021, 200 patients with localized clinical Tis-T3 upper urinary tract urothelial carcinoma underwent laparoscopic nephroureterectomy with open distal ureterectomy. After removing the specimen, drainage tubes were placed on the renal beds and/or in the retrovesical spaces. Drain tubes were omitted for most patients after 2017. We compared the postoperative outcomes between the patients with drain placement (D+ group) and without drain placement (D- group) using propensity score matching.

RESULTS

A total of 164 patients (90 in the D+ group and 74 in the D- group) were enrolled, and matched pairs of 108 patients were analyzed. There was no significant difference in the incidence of complications according to Clavien-Dindo grade in the two groups after the propensity score matching. There was no significant difference in the incidence of postoperative lymphocele (n = 5 vs. 9, p = 0.395) and symptomatic lymphocele (n = 1 vs. 1, p = 1) between the two groups. The length of hospital stay was significantly shorter in the D- group (11 vs. 8 days, p < 0.0001).

CONCLUSIONS

We found that omitting the drainage tube after laparoscopic radical nephroureterectomy did not increase postoperative complications or lymphocele and shortened the post-hospital stay.

Laparoscopic Radical Nephrectomy in the Current Era: Technical Difficulties, Troubleshoots, a Guide to the Apprentice, and the Current Learning Curve

Abhishek Pandey, MSObjectives  The main aim of this study is to present our experience with laparoscopic radical nephrectomy (LRN) and share practical solutions to various surgical challenges and the learning curve we realized. Materials and Methods  We retrospectively analyzed our LRN database for relevant demographic, clinical, imaging, operative, and postoperative data, including operative videos. We described various complications, vascular anomalies, intraoperative difficulties, and our improvisations to improve safety and outcomes. Statistical Analysis  We evaluated the learning curve, comparing the initial half cases (group 1) against the latter half (group 2), using the chi-squared test for categorical variables and Student's t -test for continuous variables. Results  Of the 106 patients included, LRN was successful in 95% ( n  = 101), and five cases converted to open surgical approach. The mean tumor size was 7.4 cm, 42% incidentally detected. The cumulative complication rate was 15%, including five main renal vein injuries. Intraoperative difficulties included ureter identification ( n  = 6), venous bleed during hilar dissection ( n  = 11), double renal arteries ( n  = 23), and venous anomalies ( n  = 20). Arterial anatomy had 95% concordance with the imaging findings. We describe various trade tricks to perform hilar dissection, identify and control anomalous vasculature, handle venous bleed, confirm arterial control, and improve decisions using imaging, technology, and guidance of a mentor. No statistically significant difference in the learning curve was observed between the study groups. Conclusion  With LRN already established as the current standard of care, our description intends to share the trade tricks and inspire novice urologists, who can assimilate training and reproduce good results under proper guidance. The steep learning curve described in the past may not be apparent in the current era of training and technological advancement.

Recurrent Renal Cell Carcinoma Presenting as Port-Site Metastases, Detected on 18F-Fluorodeoxyglucose Positron Emission Tomography-Computed Tomography

The incidence of port-site metastases (PSMs) varies with the tumor type with adenocarcinoma having a high incidence. However, it is rarely seen in urological malignancies and more so in renal cell carcinoma (RCC). We hereby describe one such case of PSM after laparoscopic radical nephrectomy for RCC, which was detected on 18F-fluorodeoxyglucose positron emission tomography-computed tomography.

Oncologic and perioperative outcomes of laparoscopic versus open radical nephrectomy for the treatment of renal tumor (> 7 cm): a systematic review and pooled analysis of comparative outcomes

OBJECTIVE

Systematic evaluation of the effectiveness and safety of laparoscopic radical nephrectomy (LRN) for renal tumor (>7 cm).

METHODS

The databases PubMed, Scopus, SinoMed, ScienceDirect, and Google Scholar were systematically searched for trials up to November 2022. The pooled results were evaluated by weighted mean difference (WMD), odds ratio (OR), and hazard ratio (HR).

RESULTS

This meta-analysis (18 trials) demonstrated that compared to open radical nephrectomy (ORN), LRN had a longer operative time (OT) (WMD=15.99, 95% CI: 6.74 to 25.24, p = 0.0007), lower estimated blood loss (EBL) (WMD = -237.07, 95% CI: -300.02 to -174.12, p < 0.00001), lower transfusion rates (OR = 0.37, 95% CI: 0.24 to 0.55, p < 0.00001), and shorter length of stay (LOS) (WMD = -2.95, 95% CI: -3.86 to -2.03, p < 0.00001). No statistically relevant differences were found in overall survival (OS) (HR = 1.04, 95% CI: 0.81 to 1.35, p = 0.76), cancer-specific survival (CSS) (HR = 1.28, 95% CI: 0.97 to 1.68, p = 0.08), progression-free survival (PFS) (HR = 1.20, 95% CI 0.97 to 1.48, p = 0.1), recurrence-free survival (RFS) (OR = 1.27, 95% CI: 0.89 to 1.81, p = 0.56), local recurrence rate (OR = 0.85, 95% CI: 0.42 to 1.71, p = 0.65), and intraoperative and postoperative complications.

CONCLUSION

For patients with renal tumors (> 7 cm), LRN has specific perioperative advantages over ORN (LOS, EBL, and transfusion rates). However, the OT was prolonged in the LRN group. In addition, no differences in complication or oncological outcomes (OS, CSS, PFS, RFS, and local recurrence rate) were reported.

TRIAL REGISTRATION

PROSPERO CRD42022367114.

Fabrication and application of a wireless high-definition endoscopic system in urological surgeries

OBJECTIVE

To introduce a wireless high-definition endoscopic system (WHES) and compare it with a Storz high-definition (HD) system for image resolution, colour resolution, weight, and costs.

MATERIALS AND METHODS

The WHES incorporated a portable light-emitting diode light source and a wireless camera module, which can be compatible with different types of endoscopes. Images were wirelessly transmitted to a monitor or mobile platform such as smartphone through a receiver. The International Standards Organization 12233 resolution chart image was used for the comparison of image resolution and Munsell Colour Checker Chart for colour resolution. In all, 38 endourologists used a Likert questionnaire to blindly evaluate cystoscopic images from a patient with haematuria. The surgical team was asked about the overall performance of the WHES in 20 laparoscopic adrenalectomies using a unvalidated subjective survey.

RESULTS

There was no difference in image resolution between the two systems (5.82 vs 5.89  line pairs/mm). Without lens and respective light sources, there were better purple (ΔE = 21.48 vs 28.73), blue (ΔE = 34.88 vs 38.6) and red colour resolution (ΔE = 29.01 vs 35.45) for the WHES camera (P  <  0.05), but orange (ΔE = 43.45 vs 36.52) and yellow (ΔE = 52.7 vs 35.93) resolutions were better for the Storz HD camera (P  <  0.05). Comparing the WHES to a Storz laparoscopic system, the Storz system still had better resolution of orange and yellow, while the resolution of purple, blue, and red was similar for the two systems. The expert comments on resolution, brightness, and colour for cystoscopy were not statistically different, but the ergonomics score for the WHES was higher (3.7 vs 3.33, P = 0.038). The overall cost of the WHES was $23  000-25  000 compared with $45  000-50  000 for a Storz system. There were 100% general satisfaction for the WHES in the survey.

CONCLUSION

We developed a new WHES that provides the same resolution images as a Storz laparoscopic system and acceptable colour resolution with the advantages of wireless connection, small volume, low cost, portability, and high-speed wireless transmission.

Introduction of laparoscopic nephrectomy for autosomal dominant polycystic kidney disease as the standard procedure

PURPOSE

Autosomal dominant polycystic kidney disease (ADPKD) is a common hereditary disorder and accounts for 5-10% of all cases of kidney failure. 50% of ADPKD patients reach kidney failure by the age of 58 years requiring dialysis or transplantation. Nephrectomy is performed in up to 20% of patients due to compressive symptoms, renal-related complications or in preparation for kidney transplantation. However, due to the large kidney size in ADPKD, nephrectomy can come with a considerable burden. Here we evaluate our institution's experience of laparoscopic nephrectomy (LN) as an alternative to open nephrectomy (ON) for ADPKD patients.

MATERIALS AND METHODS

We report the results of the first 12 consecutive LN for ADPKD from August 2020 to August 2021 in our institution. These results were compared with the 12 most recent performed ON for ADPKD at the same institution (09/2017 to 07/2020). Intra- and postoperative parameters were collected and analyzed. Health related quality of life (HRQoL) was assessed using the SF36 questionnaire.

RESULTS

Age, sex, and median preoperative kidney volumes were not significantly different between the two analyzed groups. Intraoperative estimated blood loss was significantly less in the laparoscopic group (33 ml (0-200 ml)) in comparison to the open group (186 ml (0-800 ml)) and postoperative need for blood transfusion was significantly reduced in the laparoscopic group (p = 0.0462). Operative time was significantly longer if LN was performed (158 min (85-227 min)) compared to the open procedure (107 min (56-174 min)) (p = 0.0079). In both groups one postoperative complication Clavien Dindo ≥ 3 occurred with the need of revision surgery. SF36 HRQol questionnaire revealed excellent postoperative quality of life after LN.

CONCLUSION

LN in ADPKD patients is a safe and effective operative procedure independent of kidney size with excellent postoperative outcomes and benefits of minimally invasive surgery. Compared with the open procedure patients profit from significantly less need for transfusion with comparable postoperative complication rates. However significant longer operation times need to be taken in account.

Goldfinger bypassing and en bloc stapling without dissection of renal vessels during laparoscopic nephrectomy

OBJECTIVE

To test the employment of the Goldfinger Dissector (GD) to bypass and en bloc stapling of renal hilus without vascular dissection. Thus far no study has experimented the use of this integrated technique.

PATIENTS AND METHODS

From July 2002 to October 2020, clinical data were collected from 288 patients who underwent transperitoneal laparoscopic nephrectomies. They were divided into two groups: using GD with en bloc stapling (n = 174, group I) or the separation and ligation method (n = 114, group II) using the same Endo GIA Universal (Vascular) Stapler. Comparative analysis was carried out between the two groups, examining blood loss, operative time, intra and postoperative complications and hospital stay.

RESULTS

The mean age was 58.3 and 55.1 years in group I and II, respectively. Ratio of 90/84 and 55/59 males/females was found in group I and II, respectively.Blood loss was 65.5 ml and 188.9 ml, operative time was 156.5 and 189.2 minutes, wound infection occurred in three patients in each group (1.7% and 2.6%), ileus in 4 (2.3%) and 1 (0.87%), atrial fibrillation in 1 (0.57%) and 0%, incisional hernia in 0 (0%) and 2 (1.75%), deep vein thrombosis (DVT) in 0 (0%) and 1 (0.87%), conversion to open surgery in 2 (1.15%) and 5 (4.39%), mean hospital stay 3.5 days and 4 days in group I and II, respectively.

CONCLUSIONS

Routine use of the GD and en bloc stapling of the renal pedicle in laparoscopic nephrectomy is safe and useful. This technique can decrease blood loss, operative time, and have some benefit in conversion to open surgery.

İkinci basamak perifer devlet hastanesinde yeni uzman üroloğun erken dönem laparoskopik deneyimleri

Amaç: Devlet hizmet yükümlülüğü nedeniyle ikinci basamak perifer devlet hastanesinde görev yapan bir üroloji uzmanının ilk laparoskopik cerrahi deneyimlerinin retrospektif olarak değerlendirilmesi. Gereç ve Yöntem: Nisan 2016 – Ağustos 2018 tarihleri arasında Şanlıurfa Balıklıgöl Devlet Hastanesi Üroloji kliniğinde toplam 25 hastaya (16 erkek, 9 kadın) laparaskopik cerrahi girişim yapılmıştır. Hastalar demografik özellikler, cerrahinin uygulandığı taraf, cerrahi teknik, operasyon ve hastanede kalış süreleri, postoperatif analjezik ihtiyaç varlığı, peroperatif ve postoperatif komplikasyonlar kayıt edilmiştir. Bulgular: Çalışmaya dahil edilen hastaların yaş ortalaması 38,8 ± 11,6 yıl idi. Bunlar; basit nefrektomi (n = 10, %40), böbrek kist eksizyonu (n = 6, %24), üreterolitotomi (n = 6, %24), radikal nefrektomi (n = 1, %4), piyeloplasti (n = 1, %4) ve testis araştırılması (n = 1, %4) idi. Ortalama operasyon süresi ise 108,8 ± 31,6 dakika ve ortalama hastanede kalış süresi 3,8 ± 0,9 gün olarak tespit edildi. Tüm vakaların altısında (%24) retroperitoneal yaklaşım tercih edildi. Toplam altı (%24) hastada komplikasyon görüldü. Modifiye Clavien Komplikasyon derecelendirme sistemine göre Grade 1, 2 ve 3 komplikasyonlarının dağılımları sırasıyla dört (%66,6), bir (%16,6) ve bir (%16,6) idi. Olguların hiçbirinde grade 4 ve 5 komplikasyonları gözlenmedi. Sonuç: Laparoskopi konusunda tecrübeli merkezlerde asistanlık eğitimi alan yeni uzman ürologlar, kliniklerinde aldıkları bu eğitimi ve tecrübeyi, devlet hizmet yükümlülüğü nedeniyle gittikleri perifer devlet hastanelerinde uygulayabilir, gerek laparoskopik cerrahi ekipman temininde, gerekse yardımcı ameliyathane personeli eğitiminde öncülük yapabilirler.

Dealing with malignancy involving the inferior vena cava in the 21st century

INTRODUCTION

Malignancies involving the inferior vena cava (IVC) have historically been considered not amendable to surgery. More recently, involvement of the IVC by neoplastic processes in the kidney, liver or in the retroperitoneum can be managed successfully.

EVIDENCE ACQUISITION

In this systematic review we summarize the current evidence regarding the surgical management of the IVC in cases of involvement in neoplastic processes. Current literature was searched, and studies selected on the base of the PRISMA guidelines. Evidence was synthesized in narrative form due to heterogeneity of studies.

EVIDENCE SYNTHESIS

Renal cell carcinoma accounts for the greatest proportion of studied patients and can be managed with partial or complete vascular exclusion of the IVC, thrombectomy and direct closure or patch repair with good oncological prognosis. Hepatic malignancies or metastases may involve the IVC, and the joint expertise of hepatobiliary and vascular surgeons has developed various strategies, according to the location of tumor and the need to perform a complete vascular exclusion above the hepatic veins. In retroperitoneal lymph node dissection, the IVC can be excised en-block to guarantee better oncological margins. Also, in retroperitoneal sarcomas not arising from the IVC a vascular substitution may be required to improve the overall survival by clearing all the neoplastic cells in the retroperitoneum. Leiomyoma can have a challenging presentation with involvement of the IVC requiring either thrombectomy, partial or complete substitution, with good oncological outcomes.

CONCLUSIONS

A multidisciplinary approach with specialist expertise is required when dealing with IVC involvement in surgical oncology. Multiple techniques and strategies are required to deliver the most efficient care and achieve the best possible overall survival. The main aim of these procedures must be the complete clearance of all neoplastic cells and achievement of a safe margin according to the perioperative treatment strategy.

The feasibility and safety of adopting the left lumbar vein to localize the renal artery location during left transperitoneal laparoscopic partial nephrectomy

Background

Laparoscopic partial nephrectomy (LPN) is the standard of care for localized small renal cancer. The most critical step in this form of surgery is to localize the renal artery. In the present study, we describe a novel technique that uses the left lumbar vein (LV) to access the left renal artery during LPN.

Materials and methods

This was a retrospective review of 130 cases of transperitoneal laparoscopic partial nephrectomies (TLPNs) performed on patients with renal cancer in our center between January 2018 and December 2021. Either the LV or non-lumbar vein (N-LV) technique was used to locate and manage the left renal artery. We recorded relevant clinical data from all patients, including patient characteristics, tumor data, and perioperative outcomes (artery mobilization time, operative time, estimated blood loss, and complications). Comparative analysis was then carried out between the cases using LV or N-LV vein techniques.

Results

All TLPNs were successfully accomplished without conversion to open approaches. There were no complications involving the renal vessels during the entire study. The LV technique resulted in a significantly shorter time to mobilize the renal and significantly less estimated blood loss (p < 0.05). There was no significant difference between the two techniques with regard to perioperative complications.

Conclusion

The left LV represents an anatomical landmark for locating the left renal artery in TLPN. This approach has numerous advantages over the transperitoneal approach including facilitating access to the left renal artery and reducing the duration of surgery.

Feasibility and safety of renal artery closure with advanced bipolar energy device during nephrectomy

Introduction:

Many devices are available to control the renal pedicle during nephrectomy but the gold standard is still a matter of debate. Nanotechnology has evolved to include vessel-sealing systems; companies guarantee an efficacy for vessels until 7 mm. The aim of our study is to evaluate feasibility and safety of closure of the renal artery with radiofrequency energy during nephrectomy.

Methods:

We retrospectively evaluated consecutive patients undergoing nephrectomy between November 2016 and July 2020. Inclusion criteria were: renal artery diameter <7 mm and no significant arterial wall calcification. The EnSeal device was used in all cases for dissection, hemostasis and to secure the renal artery when feasible.

Results:

Overall 101 patients underwent nephrectomy, in 68 cases the radiofrequency alone was used to close the renal artery; in 45 patients during a laparoscopic procedure and in 23 during an open surgery. Conversion to open surgery was never necessary. No patients had major hemorrhagic complications. Mean operative time was 75 min, mean intraoperative blood loss was 85 ml. Overall 11 patients had postoperative complications, according to Clavien-Dindo: five grade I, three grade II, three grade III.

Discussion:

In our experience the closure of the renal artery with a radiofrequency energy device is a feasible and safe procedure. It allows a safe manipulation of the renal hilum, free from clips, which could limit surgeons’ maneuvers and be dislocated. We believe that a deep knowledge of the available technologies is fundamental for the surgeon and guarantees the best achievable results.

Laparoscopic nephron sparing surgery and radical nephrectomy in cT1 renal tumors. Comparative analysis of complications and survival

INTRODUCTION AND OBJECTIVES

Comparative analysis of postoperative complications and survival between laparoscopic partial nephrectomy (PN) and radical nephrectomy (RN) in cT1 renal cell carcinoma (RCC).

MATERIAL AND METHOD

Retrospective study of patients with two kidneys and single renal tumor cT1 treated in our center between 2005 and 2018 by laparoscopic PN or RN.

RESULTS

372 patients met the inclusion criteria for the study. RN was performed in 156 (41.9%) patients and PN in 216 (58.1%). Clavien Dindo III-V complications were observed in 10 (4,6%) PN and 6 (3,9%) RN patients (p = 0.75). The comorbidity Charlson index (CCI) was identified as an independent predictor variable of complications (p = 0.02) and surgical approach did not affect multivariate analysis. Estimated overall survival (OS) was 81.2% and 56.8% at 5 and 10 years in the RN group and 90.2% and 75.7% in the PN group, respectively (p = 0.0001). Obesity (HR 2.77, p = 0.01), CCI ≥ 3 (HR 3.69, p = 0.001) and glomerular filtration rate (GFR) <60 mL/min/1.73 m² at discharge (HR 1.87, p = 0.03) were identified as predictors of overall mortality. Nephrectomy approach showed no influence on OS. Estimated recurrence-free survival (RFS) was 86.1% at 5 and 10 years in the RN group and 93.5% and 83.6% in the PN group, respectively (p = 0.22).

CONCLUSIONS

Laparoscopic PN is not inferior to RN in terms of oncologic and surgical safety in cT1 RCC. Nephrectomy approach did not influence patient OS, however, obesity, CCI ≥ 3 and GFR <60 mL/min/1.73 m² at discharge did behave as predictors.

Urological laparoscopic procedures and results performed by a single urologist in a secondary state hospital

Aim: To evaluate the results of urological laparoscopic operations performed by a single surgeon in secondary public hospital Materials and Methods: The data of 30 patients who underwent urological laparoscopic surgery in Şanlıurfa Training and Research Hospital between January 2018 and January 2021 were retrospectively analyzed. The operation type, duration of operation, side, removal time of drain, length of stay in the hospital and complications were noted. Results: All patients underwent laparoscopy via transperitoneal route. Laparoscopic nephrectomy was performed in 15 patients, dismembred pyeloplasty in 4 patients, ureterolithotomy in 8 patients, and cyst excision in 3 patients. The mean patient age was 40.43 + 16.72 (14-76). A male/female ratio of 13/17 was found to be 43.3% male and 56.7% female. Considering the operation times, nephrectomy was 173.26 (120-240) minutes, pyeloplasty 240 ± (210-270) minutes, ureterolithotomy 110.75 (75-180) minutes, and cyst excision 112.66 (100-138) minutes. All patients had a trace amount of drains (

New imaging technologies for robotic kidney cancer surgery

Objective

Kidney cancers account for approximately 2% of all newly diagnosed cancer in 2020. Among the primary treatment options for kidney cancer, urologist may choose between radical or partial nephrectomy, or ablative therapies. Nowadays, robotic-assisted partial nephrectomy (RAPN) for the management of renal cancers has gained popularity, up to being considered the gold standard. However, RAPN is a challenging procedure with a steep learning curve.

Methods

In this narrative review, different imaging technologies used to guide and aid RAPN are discussed.

Results

Three-dimensional visualization technology has been extensively discussed in RAPN, showing its value in enhancing robotic-surgery training, patient counseling, surgical planning, and intraoperative guidance. Intraoperative imaging technologies such as intracorporeal ultrasound, near-infrared fluorescent imaging, and intraoperative pathological examination can also be used to improve the outcomes following RAPN. Finally, artificial intelligence may play a role in the field of RAPN soon.

Conclusion

RAPN is a complex surgery; however, many imaging technologies may play an important role in facilitating it.

Survival after minimally invasive vs. open radical nephrectomy for stage I and II renal cell carcinoma

BACKGROUND

A recently reported phase III randomized trial comparing open and minimally invasive hysterectomy showed significantly higher rates of local recurrence after minimally invasive surgery (MIS) for cervical cancer. This raised concerns regarding patterns of recurrences and survival after MIS in general. This study aims to determine the effect of MIS on all-cause mortality among patients undergoing radical nephrectomy for Stage I and II renal cell carcinoma (RCC).

METHODS

We utilized the National Cancer Database to identify patients diagnosed with clinical stage I-II RCCs between 2010 and 2013. Patients for whom a laparoscopic or robotic radical nephrectomy was attempted were compared to patients who underwent open radical nephrectomy (ORN). Adjusted regression models with inverse probability propensity score weighting (IPW) were utilized to identify independent predictors of receiving MIS. All-cause mortality rates were compared using IPW survival functions and log-rank tests. Adjusted Cox proportional hazard models were fitted to determine independent predictors of OS.

RESULTS

27,642 patients were identified; 11,524 (41.7%) had MIS, while 16,118 (58.3%) had ORN. Kaplan-Meier survival curves in the IPW cohort showed significant OS advantage for patients who underwent MIS (p < 0.001). Furthermore, length of hospital stays (3 vs. 4 days), 30 day readmission rates (2.4 vs. 2.87%), 30 day (0.53 vs. 0.96%) and 90 day mortality rates (1.04 vs. 1.77%) were significantly higher in the ORN group (p < 0.001).

CONCLUSIONS

MIS was associated with better OS outcomes compared to ORN for stage I and II RCC. In addition, MIS had lower post-operative readmission, 30- and 90 day mortality rates.

A Review of the First 100 Cases of Laparoscopic Nephrectomy: A Single-Center Experience

Objective

Since 1990, when the first laparoscopic nephrectomy was performed, there has been a dramatic increase in interest in laparoscopic procedures in urological surgeries.The aim of the study was to present our experience with the first 100 cases of laparoscopic nephrectomy at our institute, identify the difficulties encountered, and discuss how to approach the solutions.

Materials and methods

The data of all patients who underwent laparoscopic nephrectomy between May 2017 and April 2019 (n=100) were reviewed retrospectively.

Results

A total of 100 patients (49 men and 51 women), with a mean age of 34.1 ± 15.1 years, underwent laparoscopic nephrectomy. The mean operative time was 108 min (IQR, 45-240). The operative time was significantly reduced with the surgeons' experience. Of 100 cases, only four were converted to open surgery because of bleeding from the renal bed area, strong adhesions from previous surgeries, or morbid obesity. Of 100 patients, 30 were allowed intake on the same operative day while 70 were allowed on the first postoperative day. Intravenous and oral analgesics were discontinued on the second postoperative day in 81 patients.

Conclusion

The learning curve in our series of cases is comparable to a very similar studywith reduced operative time, reduced blood loss, and fewer complications when compared to open nephrectomy. In addition, setups with minimal previous laparoscopic units can initiate laparoscopic procedures with minimal risk to the patient.

A comparison of surgical practice and operative outcomes between retroperitoneal and transperitoneal laparoscopic nephrectomies – 6 years of data from the BAUS Nephrectomy database

Objectives:

While the choice of surgical approach for laparoscopic nephrectomy is broadly split between transperitoneal and retroperitoneal options, the evidence for the impact of this decision on perioperative outcomes is built on relatively small volume data, with often inconsistent findings and conclusions. We aimed to assess the impact of operative approach on perioperative outcomes for laparoscopic radical, partial and simple nephrectomy and nephroureterectomy through analysis of the British Association of Urological Surgeons (BAUS) Nephrectomy database.

Patients and methods:

All patients added to the BAUS Nephrectomy database with laparoscopic surgery between 2012 and 2017 inclusively were included and subdivided by operation and surgical approach. Preoperative patient and tumour characteristics, as well as intraoperative and post-operative short-term outcomes, were assessed.

Results:

Overall, 26,682 operations were documented over the review window (81.6% transperitoneal). Small increases in blood loss ( p = 0.001), transfusion rate ( p = 0.02) and operative length ( p = 0.01) were seen for transperitoneal radical nephrectomies and longer hospital stays seen for retroperitoneal procedures (radical nephrectomy p = 0.00l; partial nephrectomy p = 0.04). Retroperitoneal procedures were associated with increased rates of conversion for simple nephrectomy ( p = 0.02), nephroureterectomy ( p = 0.03) and most notably partial nephrectomy (10.5% versus 4.4%; p = 0.001). No further variation in intraoperative complications, post-operative complications, tumour margin positivity rates, unintended ITU admission, or likelihood of death was identified related to surgical approach.

Conclusion:

Observed variations in perioperative outcomes were generally modest in nature, and little ground is seen to support a change in operative technique for those committed to one approach. A caveat to this exists with open conversion for retroperitoneal partial nephrectomies and requires careful consideration of patient selection by the individual surgeon.

Level of evidence:

4

Robotic Radical Nephrectomy: Every revolution seems impossible at the beginning, and after it happens, it was inevitable

N/a.

Recovery of Surgical Training Through Extended Laparoscopic Simulation Training

Introduction The coronavirus disease 2019 (COVID-19) pandemic has adversely affected surgical training internationally. Laparoscopic surgery has a steep learning curve necessitating repetitive procedural practice. We evaluate the efficacy of short- and long-duration simulation training on participant skill acquisition to support the recovery of surgical training.  Methods A prospective, observational study involving 18 novice medical students enrolled in a five-week course. Nodal timed assessments involved three tasks: hoop placement, stacking of sugar cubes and surgical cutting. One month post-completion, we compared the ability of six novice course participants to that of six surgical trainees who completed a smaller portion of the course curriculum. Results Course participants (n=18) completed tasks 111% faster on their third and last course attempt. The surgical trainee group (n=6) took 46% longer to complete tasks compared to the six re-invited course participants, whose ability continued to advance on their fourth effort with a combined 154% earlier completion time compared to try one. Conclusions This study supports the adoption of a structured, extended, regular and spaced-out simulation course or curriculum to cultivate greater skill acquisition and retention amongst surgical trainees, and improve patient care.

Safety and efficacy of inferoposterior access approach to the renal pedicle during transperitoneal laparoscopic radical nephrectomy: A retrospective comparative analysis at a single institution

Purpose

To assess the safety and efficacy of transperitoneal laparoscopic radical nephrectomy using an inferoposterior approach to the renal pedicle.

Materials and methods

A retrospective review of 89 patients who underwent transperitoneal laparoscopic radical nephrectomy by a single surgeon between June 2014 and December 2019 at a single urological unit was carried out. Access to the renal pedicle was via the inferoposterior approach in 48 cases (study group) and 41 were approached via the conventional anterior approach (control group). Patient demographics, intra-operative anatomical findings, and procedural details including operative time on renal pedicles and post-operative outcomes were recorded. Post-operative complications were recorded and classified according to the Clavien-Dindo classification. A comparative analysis between the two groups was performed using Chi-square test and t-test.

Results

The inferoposterior approach group had a shorter operative time (132.85±26.65 min vs 153.46±39.94 min; p<0.01), which could be attributed to the shorter time spent operating on the renal vasculature (46.31±6.16 min vs 64.46±7.64 min; p<0.01). Lower average blood loss was also observed in the inferoposterior approach group (42 ml vs 62 ml; p<0.05). No significant difference was identified concerning the mean patient age, body mass index, tumor size, number of renal vessels identified, and post-operative length of stay between the two groups. None of the patients required conversion to open.

Conclusion

Inferoposterior approach to access the renal pedicle during transperitoneal laparoscopic radical nephrectomy is a safe and effective technique, which shortens the operative time when compared to the conventional anterior approach.

Level of evidence:

Level 3b.

Simplifying Laparoscopic Nephrectomy for Beginners: Double Window Technique With En Bloc Hilar Stapling

Laparoscopic nephrectomy is a commonly performed procedure. As with any surgical procedure, this too has a significant learning curve. The management of renal hilum is the most critical part of this surgery. It requires a meticulous intra-hilar dissection to identify the renal artery and vein. The kidneys are extremely vascular structures and any injury to these vessels during dissection can result in life-threatening bleeding. Hence, it is obvious that beginners most often face difficulty and apprehension at this step of the laparoscopic nephrectomy. We describe a simple technique of laparoscopic nephrectomy which includes the creation of two windows, one at the lower pole and the second at the upper pole, isolation of the hilum, and en bloc stapling of the renal hilar vessels. This method safeguards against collateral damage to the surrounding structures. It also avoids the need for intra-hilar dissection, hence decreasing the chances of vascular injuries.

Comparison of Perioperative Outcomes for Radical Nephrectomy Based on Surgical Approach for Masses Greater than 10cm

Introduction and Objective Robotic-assisted radical nephrectomy (RRN) is increasingly utilized as an alternative to laparoscopic radical nephrectomy (LRN) but there are concerns over costs and objective benefit. In the setting of very large renal masses (>10 cm), comparison between techniques is limited and it is unclear whether a robotic approach confers any perioperative benefit over LRN or open radical nephrectomy (ORN). In this study, perioperative outcomes of RRN, LRN, and ORN for very large renal masses are compared. Methods Using the National Cancer Database, patients were identified who underwent radical nephrectomy for kidney tumors >10 cm diagnosed from 2010-2015. Patients were analyzed according to surgical approach. Perioperative outcomes, including conversion to open, length of stay, readmission rates, positive surgical margins, and 30 and 90-day mortality were compared among cohorts. Results A total of 9288 patients met inclusion criteria (RRN = 842, LRN = 2326, ORN = 6120). Compared to ORN, recipients of RRN or LRN had similar rates of 30-day readmission and 30- and 90-day mortality. Length of hospital stay was significantly shorter in RRN (-1.73 days ±0.19; p<0.0001) and LRN (-1.40 days ±0.12; p<0.0001) compared to ORN. LRN had a higher rate of conversion to open compared to RRN (OR 1.48; 95% CI 1.10-1.98; p=0.0087). Conversion to open from RRN or LRN added 1.3 additional days of inpatient stay. Over the study period, RRN use increased from 4.1% to 14.8%, LRN from 20.9% to 25.6%, while ORN use decreased from 75% to 59.6%. Conclusions Minimally invasive approaches are increasingly utilized in very large renal masses. RRN has lower rates of conversion to open but produces comparable perioperative outcomes to LRN. Minimally invasive approaches have a shorter length of inpatient stay but otherwise report similar surgical margin status, readmission rates, and mortality rates compared to open radical nephrectomy.

A 25 year perspective on the evolution and advances in an understanding of the biology, evaluation and treatment of kidney cancer

The diagnosis, evaluation and management of patients with renal cell carcinoma has transformed in the 21st century. Utilizing biological discoveries and technological advances, the field has moved from blunt surgical and largely ineffective medical treatments, to nuanced and fine-tuned approaches based on biology, extent of disease and patient preferences. In this review we will summarize the last 25 years of progress in kidney cancer.

Complete retroperitoneal laparoscopic nephroureterectomy with bladder cuff excision for upper tract urothelial carcinoma without patient repositioning: a single-center experience

Objective

This study was performed to evaluate the outcome of complete retroperitoneal laparoscopic nephroureterectomy with bladder cuff excision (RLNU-BCE), which is performed to treat urothelial carcinomas in the renal pelvis or in the ureter higher than the crossing of the common iliac artery without patient repositioning.

Methods

We retrospectively analyzed the clinical data of 48 patients with upper tract urothelial carcinoma who underwent complete RLNU-BCE in our institution from May 2017 to September 2019.

Results

RLNU-BCE was successfully performed in all 48 patients. The median operation time was 110 minutes [interquartile range (IQR), 100–130 minutes], and the median postoperative anesthesia recovery time was 10 minutes (IQR, 7–15 minutes). The median postoperative hospitalization period was 5 days (IQR, 4–6 days). Pathologic examination revealed that the margin of all resected specimens was negative. After a median follow-up of 13 months (IQR, 7–20 months), no local recurrence or distant metastasis was found. No complications occurred during follow-up.

Conclusion

Based on our experience with this technique, RLNU-BCE deserves application and promotion in clinical practice. Long-term comparative studies are required to confirm its superiority over other techniques.

Factors Associated with Prolonged Retroperitoneal Laparoscopic Radical Nephrectomy Performed by Non-expert Surgeons

BACKGROUND

High body mass index (BMI) and visceral obesity were reported to be associated with prolonged transperitoneal laparoscopic radical nephrectomy (LRN); however, factors that prolong retroperitoneal LRN remain unknown. We therefore investigated factors associated with prolonged retroperitoneal LRN performed by non-expert surgeons.

METHODS

We defined non-experts surgeons as surgeons not certified to perform laparoscopic surgery by the Japanese Society of Endourology. We retrospectively reviewed the medical records of 59 consecutive patients with renal cell carcinoma treated with retroperitoneal LRN performed by non-experts at our hospital between 2014 and 2019. Associations of surgical duration with age, sex, BMI, visceral fat area (VFA), subcutaneous fat area (SFA), laterality and location of the tumor, length of the major tumor axis (tumor length), clinical T stage, ipsilateral adrenalectomy and specimen weight were analyzed using Spearman rank correlation coefficients.

RESULTS

Surgical duration positively correlated with ipsilateral adrenalectomy (rs = 0.3162, p = 0.0147) and specimen weight (rs = 0.3103, p = 0.0168) but not with BMI (rs = 0.2016, p = 0.1257) or VFA (rs = 0.0185, p = 0.8894).

CONCLUSIONS

Ipsilateral adrenalectomy and specimen weight were associated with prolonged retroperitoneal LRN, when performed by non-expert surgeons.

Comparison of modified hand-assisted retroperitoneoscopic laparoscopic nephrectomy and open nephrectomy in patients with benign inflammatory non-functioning kidney diseases

Background

To assess the validity and feasibility of the modified hand-assisted retroperitoneoscopic laparoscopic nephrectomy (MHARLN) in patients with benign inflammatory non-functioning kidney diseases.

Methods

We retrospectively compared the data of 223 patients who underwent an MHARLN (n=142) or an open nephrectomy (ON) (n=81) with benign inflammatory non-functioning diseases between January 2014 and October 2019 at our hospital. Patients' demographic data, perioperative outcomes, preoperative and postoperative inflammatory data, and postoperative complications were reviewed.

Results

The basic demographic data of patients were similar between the 2 groups. The mean operative times for the MHARLN and the ON were 135 and 143 minutes (P=0.181), respectively. The first time at which postoperative ambulation occurred, the visual analog pain scale (VAS) score before discharge and the postoperative complication rate were similar in both groups. However, compared to the MHARLN, the ON was associated with a more severe inflammatory response on the first day after surgery (P=0.045), higher estimated blood loss (309.8 vs. 139.6 mL; P=0.036), more peritoneal ruptures (19.8% vs. 9.2%; P=0.024), higher intraoperative transfusion (14.82% vs. 4.93%; P=0.011), higher VAS scores 24 hours after surgery (5.9 vs. 5.2; P=0.002), additional analgesic use (35.8% vs. 21.8%; P=0.024), and longer hospital stays (5.3 vs. 4.6 days; P=0.048). Before a liquid diet was commenced in the MHARLN and ON groups, the mean time was 1.2 and 1.5 days, respectively (P=0.004).

Conclusions

When performed by a skilled laparoscopic surgeon, the use of the MHARLN in patients with benign inflammatory non-functioning kidney diseases is reliable and safe. The MHARLN may help to treat challenging cases and result in less trauma successfully.

Renal Function: Implications on the Surgical Treatment of RCC

The good oncologic results after partial nephrectomy for stage 1 RCC show that radical nephrectomy is an overtreatment in most cases, and that many healthy nephrons are removed unnecessarily. However, partial nephrectomy is a difficult operation, with increased blood loss and a higher risk of complications. Therefore, the advantage of preserved function has to be weighed up against the increased trauma of surgery in each individual patient, and the assessment of preoperative function may influence this decision, among other factors such as comorbidities and age. In most studies, renal function has been assessed by means of estimated glomerular filtration rate, and this parameter is very helpful for long-term studies in large populations. However, more precise measurement based on clearance studies are sometimes required for more sophisticated investigations. The technique of partial nephrectomy has evolved substantially in recent years, resulting in the preservation of more nephrons, less damage to the remaining parenchyma, less blood loss, and a decreased risk of complications. The introduction of minimally invasive surgery for this purpose has also decreased the overall morbidity of surgery. In the long-term, chronic kidney disease may result in increased cardiac mortality. There is ongoing discussion on this problem, however, this potential negative influence on overall survival is not only influenced by the rate of renal insufficiency, but also to a great extent by other comorbidities such as hypertension and diabetes. Therefore, in addition to providing the best surgery for any given patient, we have to make sure that the treatment of the comorbidities will also be part of our patient management, since the risk of cardiac failure may be greater than the risk of poor oncologic outcome.

Current Trends in Management of Renal Cell Carcinoma with Venous Thrombus Extension

PURPOSE OF REVIEW

To review the evidence regarding the current trends in surgical management of renal cell carcinoma (RCC) with inferior vena cava (IVC) thrombosis. Recent published series have shown the role of minimally invasive surgery in IVC thrombectomy. This review article evaluates the present RCC with venous extent literature to assess the role of open and minimally invasive surgery in this scenario.

RECENT FINDINGS

Robotic urological surgery has shown to have known benefits in radical prostatectomy, partial nephrectomy, and pyeloplasty. Recent published series showed feasibility of robotic IVC thrombectomy even for level IV cases. With growing number of robot-assisted and laparoscopic surgeries worldwide, there is a current tendency to treat this complex and challenging pathology with a minimally invasive approach, without compromising oncological outcomes.

Comparison of laparoscopic and hand-assisted laparoscopic nephrectomy for inflammatory renal disease: which is the preferred approach?

Aims:

Management of inflammatory renal disease (IRD) can still be technically challenging for laparoscopic procedures. The aim of the present study was to compare the safety and feasibility of laparoscopic and hand-assisted laparoscopic nephrectomy in patients with IRD.

Patients and methods:

We retrospectively analyzed the data of 107 patients who underwent laparoscopic nephrectomy (LN) and hand-assisted laparoscopic nephrectomy (HALN) for IRD from January 2008 to March 2020, including pyonephrosis, renal tuberculosis, hydronephrosis, and xanthogranulomatous pyelonephritis. Patient demographics, operative outcomes, and postoperative recovery and complications were compared between the LN and HALN groups. Multivariable logistic regression analysis was conducted to identify the independent predictors of adverse outcomes.

Results:

Fifty-five subjects in the LN group and 52 subjects in the HALN group were enrolled in this study. In the LN group, laparoscopic nephrectomy was successfully performed in 50 patients (90.9%), while four (7.3%) patients were converted to HALN and one (1.8%) case was converted to open procedure. In HALN group, operations were completed in 51 (98.1%) patients and conversion to open surgery was necessary in one patient (1.9%). The LN group had a shorter median incision length (5 cm versus 7 cm, p < 0.01) but a longer median operative duration (140 min versus 105 min, p < 0.01) than the HALN group. There was no significant difference in blood loss, intraoperative complication rate, postoperative complication rate, recovery of bowel function, and hospital stay between the two groups. Multivariable logistic regression revealed that severe perinephric adhesions was an independent predictor of adverse outcomes.

Conclusion:

Both LN and HALN appear to be safe and feasible for IRD. As a still minimally invasive approach, HALN provided an alternative to IRD or when conversion was needed in LN.