Robotic surgery in pediatric urology

Long-term outcome of retroperitoneoscopic one-trocar-assisted pyeloplasty: a single-center and single-surgeon experience

PURPOSE

The aim of this study was to assess the long-term outcomes of retroperitoneoscopic one-trocar-assisted pyeloplasty (OTAP) for ureteropelvic junction obstruction (UPJO) in children.

METHODS

This retrospective analysis included 70 pediatric cases, all under the age of 5, diagnosed with UPJO and treated with the OTAP technique between May 2011 and June 2013 by a single surgeon. A single 10 mm operative scope with a 5 mm working channel was utilized to mobilize the ureteropelvic junction (UPJ) and exteriorize it through the trocar insertion site. Subsequently, conventional Anderson-Hynes dismembered pyeloplasty was conducted extracorporeally. Patient's demographics, operative time, hospital stay, complications, and success rate were evaluated.

RESULTS

Seventy pediatric patients (65 males and 5 females) underwent OTAP, with ages at the time of operation ranging from 1 month to 5 years (mean = 22.6 ± 18.6 months). The mean operative time was 74.8 ± 15.2 min. There was a significant reduction in the mean renal pelvis size from 34.3 ± 8.1 mm preoperatively to 13.8 ± 4.7 mm postoperatively (p < 0.05). Moreover, the mean differential renal function (DRF) increased from 47.9 ± 9.8% preoperatively to 51.2 ± 5.9% postoperatively (p < 0.05). All patients experienced an uneventful postoperative recovery, with a median hospital stay of 3.4 days. The success rate was 95.7%, with a median follow-up time of 75 months (range: 6-125 months).

CONCLUSION

OTAP is a safe and feasible minimally invasive technique to correct ureteropelvic junction obstruction in children. It could be considered as a treatment of choice for children under the age of 5 as it combines the advantages of open and retroperitoneoscopic pyeloplasty and presents excellent long-term outcomes.

TRIAL REGISTRATION NUMBER

NCT06349161 April 4th, 2024, retrospectively registered.

Low anterolateral incision for single-port extraperitoneal robot-assisted pyeloplasty: description of technique and initial experience

PURPOSE

This study aims to describe the surgical steps for the single-port low anterolateral extraperitoneal approach to pyeloplasty, report its feasibility, and share the initial outcomes of our experience.

METHODS

We analyzed all consecutive patients who underwent single-port low anterolateral extraperitoneal pyeloplasty due to ureteropelvic junction obstruction (UPJO). The surgical steps included a pure single-port approach through a 3.5 cm low anterolateral incision two fingerbreadths above the superior pubic ramus. The ureter was localized and followed cranially, a dismembered pyeloplasty was performed, and a running ureteropelvic anastomosis was completed. No drains were placed. The urinary catheter was removed upon discharge, and the ureteral stent after 3-5 weeks.

RESULTS

A total of eight cases (two adults and six children) were completed successfully, without complications or conversions. Median operative time, console time, and estimated blood loss were 208.5 min, 114.5 min, and 10.0 ml, respectively. All patients were discharged within 24 h, except for one that required urinary output observation due to retention. There were no major postoperative complications. The median pain score at discharge was 0/10. Only one patient was prescribed PRN opioids at discharge. The readmission rate was 0.0%. All patients were asymptomatic on their last follow-up with no definitive obstruction on imaging, and no requirement for additional procedures or stents.

CONCLUSION

Single-port low anterolateral extraperitoneal pyeloplasty is a feasible alternative for surgical treatment of UPJO in adult and pediatric patients with improved recovery outcomes.

Robotic-assisted laparoscopic surgery for the treatment of Wilms' tumor in children: single-center experience and medium-term outcomes

To report our institutional experience and the medium-term outcomes of utilizing robotic-assisted laparoscopic surgery (RALS) in patients with Wilms' tumor (WT). The robotic surgical interventions include nephron-sparing surgery (RAL-NSS), radical nephrectomy (RAL-RN), and nephrectomy with inferior vena cava thrombectomy (RAL-N-IVCT). We retrospectively collected medical records of WT patients who underwent RALS in our center between August 2019 and February 2022. Patients' baseline demographics, preoperative parameters, and perioperative/postoperative data were recorded and analyzed. Follow-up results were collected to evaluate the oncological outcomes. A total of 12 patients (13 sides) with a median age of 30 (IQR: 19.5-45.5) months were included. All operations were successfully completed without conversion. Seven patients received preoperative chemotherapy. Distribution of surgical interventions was as follows: five patients underwent RAL-RN, five received RAL-NSS, one with bilateral WT underwent concurrent RAL-RN and RAL-NSS, and one received RAL-RN-IVCT post preoperative chemotherapy. Postoperative chemotherapy was conducted in ten patients. The estimated intraoperative blood loss was 27 ± 4.0 ml for the RAL-NSS group, 41.67 ± 12.13 ml for the RAL-RN group, and 350 ml for the RAL-RN-IVCT groups, respectively. The median perioperative serum creatinine levels were 32.5 (IQR: 30.75-39.5) μmol/l preoperatively and 35 (IQR: 31.75-38.5) μmol/l postoperatively, which showed no significant difference. No positive lymph nodes were detected. Postoperative chemotherapy was performed according to the tumor volume and pathological findings. The median follow-up time was 17.5 (15.8-22.3) months. During this interval, neither distant metastasis nor recurrence was identified. Based on our medium-term follow-up observations, RAL-NSS, RAL-RN, and RAL-RN-IVCT exhibit promising feasibility and safety profiles in the therapeutic landscape of WT.

Review of robot-assisted laparoscopic surgery in management of infant congenital urology: Advances and limitations in utilization and learning

As robotic-assisted (RAL) surgery expanded to treat pediatric congenital disease, infant anatomy and physiology posed unique challenges that prompted adaptations to the technology and surgical technique, which are compiled and reviewed in this manuscript. From the beginning, collaboration with anesthesia is critical for a safe, efficient case including placement of an endotracheal tube rather than a laryngeal mask (LMA) and placement of a nasogastric tube and/or rectal tube to relieve distended stomach or bowel, respectively. Furthermore, end-tidal CO₂ (EtCO₂ ) is important for monitoring and predicting the effects of pneumoperitoneum on caridiovascular physiology, incranial pressure, and risk of acidosis and hypercarbia. Positioning can further exacerbate these effects and affect intra-abdominal working space. For infant robotic pyeloplasty and heminephrectomy, a "beanbag" is commonly used for stabilization in the lateral decubitus position. We advise against the use of a "baby bump" because it brings the bowels and vasculature more anterior than expected. Pnuemoperitoneum pressure of 8-10 mmHg during port placement maximizes safety, but thereafter, the pneumoperitoneum pressure can be minimized to 6-8 mmHg during the procedure without compromising the visual field. Port sites should be marked after insufflation, followed by the open Hasson technique for peritoneal access and port placement under direct vision with intussusception of the trocars to avoid vascular or bowel injury. Additional tips can be obtained through this manuscript, immersive fellowships, and mini-fellowships. Ulitmately, infant robotic surgery has the potential to benefit many children but is presently limited by the lack of pediatric-specific robotic technology and its associated costs.

Pediatric robotic surgery: An overview

Pediatric robotic surgery offers children a minimally invasive approach with numerous advantages over open or thoracoscopic and laparoscopic surgery. However, despite its widespread adoption for adult patients, the utilization of robotic surgery within pediatrics has been relatively slower to progress. This paper provides an overview of pediatric robotic surgery and discusses benefits, limitations, and strategies for successful implementation of robotics within pediatric surgical practice.

Current evidence of robotic-assisted surgery use in functional reconstructive and neuro-urology

The use of robot-assisted technology has been widely adopted in urological oncological surgery and its benefits have been well established. In recent years, robotic technology has also been used in several functional reconstructive and neuro-urology (FRNU) procedures. The aim of this review was to evaluate the current evidence in the use of robotic technology in the field of FRNU. We performed a PubMed-based literature search between July and August 2022. The keywords we included were 'robotic assisted', 'ureteric reimplantation', 'cystoplasty', 'ileal conduit', 'neobladder', 'sacrocolpopexy', 'colposuspension', 'artificial urinary sphincter', 'genitourinary fistula' and 'posterior urethral stenoses'. We identified the latest available evidence in the use of robotic technology in specific FRNU procedures such as the reconstruction of the ureters, bladder and urinary sphincter, urinary diversion, and repair of genitourinary prolapse and fistula. We found that there is a lack of prospective studies to assess the robotic-assisted approach in the field of FRNU. Despite this, the advantages that robotic technology can bring to the field of FRNU are evident, including better ergonomics and visual field, less blood loss and shorter hospital stays. There is therefore a need for further prospective studies with larger patient numbers and longer follow-up periods to establish the reproducibility of these results and the long-term efficacy of the procedures, as well as the impact on patient outcomes. Common index procedures and a standardized approach to these procedures should be identified to enhance training.

Robotic-assisted surgery in the pediatric surgeons' world: Current situation and future prospectives

Robotic-assisted surgery has been fully embraced by surgeons for the adult population; however, its acceptance is too slow in the world of pediatric surgeons. It is largely due to the technical limitations and the inherent high cost associated with it. In the past two decades, indeed, there has been considerable advancement in pediatric robotic surgery. A large number of surgical procedures were performed on children with the assistance of robots, even with comparative success rates to standard laparoscopy. As a newly developing field, it still has many challenges and obstacles. This work is centered on the current status and progression of pediatric robotic surgery as well as the future perspectives in the field of pediatric surgery.

Robotic Surgery in Pediatric Urology: A Critical Appraisal of the GECI and SIVI Consensus of European Experts

Background: This study aimed to create a consensus statement on the indications, applications, and limitations of robotics in pediatric urology. Methods: After a panel and interactive discussion focused on pediatric robotics, a televoting with 10 questions was administered to 100 pediatric surgeons/urologists attending the joint meeting of the French Group of Pediatric Laparoscopy (GECI)/Italian Society of Videosurgery in Infancy (SIVI) in 2021. The results of televoting were analyzed electronically using Mentometer software. Results: Ninety-four percent of participants stated that the cutoff weight for robotics should be >10-15 kg. A minimum of 20-30 procedures should be performed to become confident in robotics (74%). Pediatric urology is the main field of application (73%) and pyeloplasty is the best indication for robotics (63%). Technical problems may happen intraoperatively in 1/10-15 cases (64%). The mean duration of robotic procedures ranges from 150 to 200 minutes (72%). The main drawbacks of robotics are high costs and limited development of miniaturized instruments (74%). Ninety-five percent believed that the costs of robotics may significantly drop with the availability of more robotic brands. The main advantages of robotics over laparoscopy include improved dexterity, easier suturing, and better ergonomics (100%), whereas the main disadvantage of sharing the robot with other specialties is the wearing out of instruments (100%). Conclusions: This is the first consensus statement, endorsed by the GECI and SIVI societies, on the use of robotics in pediatric urology. The need to introduce more robotic brands on the market to lower the costs and to develop miniaturized instruments to be adopted in infants less than 10 kg emerged. Pediatric urology is the main field of application of pediatric robotics, and robotic pyeloplasty is the most common procedure performed. Proctorship is needed for the first 20-30 procedures and technical problems may occur intraoperatively in 1/10-15 cases. The main advantages of robotics over laparoscopy are improved dexterity, easier suturing, and better surgeon ergonomics.

The Role of the Versius Surgical Robotic System in the Paediatric Population

The uptake of robot-assisted surgery has continuously grown since its advent in the 1990s. While robot-assisted surgery is well-established in adult surgery, the rate of uptake in paediatric surgical centres has been slower. The advantages of a robot-assisted system, such as improved visibility, dexterity, and ergonomics, could make it a superior choice over the traditional laparoscopic approach. However, its implementation in the paediatric surgery arena has been limited primarily due to the unavailability of appropriately sized instruments as per paediatric body habitus, therefore, requiring more technologically advanced systems. The Versius surgical robotic system is a new modular platform that offers several benefits such as articulated instruments which pass through conventional 5 mm ports, compact arms for easier manoeuvrability and patient access, the ability to mimic conventional port placements, and adaptive machine learning concepts. Prior to its introduction to paediatric surgery, it needs to go through a careful pre-clinical and clinical research program.

The Management of Clinical Varicocele: Robotic Surgery Approach

Varicocele is a pathologic dilation of the testicular veins within the spermatic cord. Varicocele is considered the most common problem in reproductive medicine practice. It is identified in 15% of healthy men and up to 35% of men with primary infertility. The exact pathophysiology of varicoceles is not very well understood, and several theories have been proposed to explain it. Varicocele can impair sperm quality and fertility via various mechanisms: reflux of adrenal metabolites, increased testicular hypoxia, oxidative stress, and increased testicular temperature have been proposed. Several studies have reported the significant benefits on semen parameters with the surgical treatment of varicocele: reducing oxidatively induced sperm DNA damage and potentially improving fertility. Varicocele repair should be offered as a part of treatment option for male partners of infertile couples presenting with palpable varicoceles. Nowadays, there are several surgical approaches available for the treatment of varicocele, such as the retroperitoneal approach, inguinal approach, and the subinguinal approach. The subinguinal microscopic approach offers the best outcomes, such as shorter hospital stays, preservation of the testicular arteries and lymphatics, least number of postoperative complications, recurrence, and a higher number of pregnancies. Currently robotic-assisted laparoscopic surgery is widely adopted in urology and surgeons began to explore the potential applications of the robotic platform to male infertility microsurgical operations. Robotic approach offers many advantages: elimination of tremor, retraction with third arm, high quality, 3-dimensional visualization and surgeon ergonomics, all contributing to the precision of surgery.

First Pediatric Pyeloplasty Using the Senhance® Robotic System—A Case Report

A pediatric robotic pyeloplasty has been performed with the Senhance^® robotic system for the first time in January 2021 on a 1.5-year-old girl with symptomatic ureteropelvic junction stenosis. A Senhance^® robotic system (Asensus Surgical^® Inc., Durham, NC, USA) with three arms and 5 mm instruments was used, providing infrared eye tracking of the 5 mm camera and haptic feedback for the surgeon, facilitating suturing of the anastomosis and double-J stent insertion. The robotic surgery lasted 4.5 h, was uneventful and successful, without recurrence of the ureteropelvic junction obstruction after six months, and with normal development of the patient’s growth and organ function. The use of the robotic system was shown to be safe and feasible; long term follow-up will be conducted subsequently in pediatric surgery.

Comparison of laparoscopic pyeloplasty vs. robot-assisted pyeloplasty for the management of ureteropelvic junction obstruction in children

BACKGROUND

Ureteropelvic junction obstruction (UPJO) is a commonly observed abnormality in pediatric urology. Minimally invasive approaches have gained popularity in recent years. Studies have demonstrated excellent results with both laparoscopic pyeloplasty (LAP) and robot-assisted pyeloplasty (RAP). Few studies have compared the experience of both procedures performed in a single institution. Our objective is to compare laparoscopic pyeloplasty and robot-assisted pyeloplasty in the Puerto Rican pediatric population.

METHODS

We conducted a retrospective cohort study using our clinic's database on patients with UPJO that were operated by the same surgeon (MPB) from 2008 to 2019. Statistical analysis was conducted of demographics, preoperative studies, perioperative data and complications of both procedures. This study was approved by our local IRB committee.

RESULTS

A total of 86 patients that underwent pyeloplasty with at least 3 years of follow up were recorded for this study. Laparoscopic pyeloplasty and robot-assisted pyeloplasty were performed in 44 (51.1%) and 42 (48.8%) patients, respectively. Patient age ranged between 4 months and 17 years (LAP group - mean age of 6.19 years/RAP group - mean age of 7.07 years). Success rates was high in this series (LAP - 100% and RAP -95%). Using Wilcoxon signed rank test and Mann whitney sum test, significant differences between preoperative and postoperative hydronephrosis grading were observed in both LAP and RAP groups. However, no significant difference was seen regarding reduction of hydronephrosis grading when comparing both groups. No intraoperative complications were seen on either group.

CONCLUSION

Both LAP and RAP are safe and effective procedures that can properly manage UPJO. Our study shows that, under experienced hands, pure laparoscopic pyeloplasty achieves comparable results to robotic assisted laparoscopic pyeloplasty. Pediatric urologists should be comfortable offering either of these approaches as they demonstrate high success rates in our pediatric population. Selection of LAP vs. RAP approach depends on the Surgeon's preference or experience, and on institutional availability. Minimally invasive therapies will continue to gain popularity with future advances in laparoscopic and robotic technology.

Robotic-Assisted Minimally Invasive Surgery in Children

Currently, minimally invasive surgery (MIS) includes conventional laparo-thoracoscopic surgery and robot-assisted surgery (RAS) or robotic surgery. Robotic surgery is performed with robotic devices, for example the Da Vinci system from Intuitive Surgical, which has a miniaturized camera capable of image magnification, a three-dimensional image of the surgical field, and the instruments are articulated with 7 degrees of freedom of movement, and the surgeon operates in a sitting position at a surgical console near the patient. Robotic surgery has gained an enormous surge in use on adults, but it has been slowly accepted for children, although it offers important advantages in complex surgeries. The areas of application of robotic surgery in the pediatric population include urological, general surgery, thoracic, oncological, and otorhinolaryngology, the largest application has been in urological surgery. There is evidence that robotic surgery in children is safe and it is important to offer its benefits. Intraoperative complications are rare, and the frequency of postoperative complications ranges from 0–15%. Recommendations for the implementation of a pediatric robotic surgery program are included. The future will be fascinating with upcoming advancements in robotic surgical systems, the use of artificial intelligence, and digital surgery.

A comparison of robotic-assisted splenectomy and laparoscopic splenectomy for children with hematologic disorders

INTRODUCTION

Laparoscopic splenectomy (LS) is the standard of care for hematologic disorders requiring splenectomy. Less is known about the outcomes following robotic-assisted splenectomy (RS) for this indication. Our aim was to describe outcomes of RS to LS in pediatric patients with hematologic disorders in our institution.

METHODS

A single institution retrospective review was performed of pediatric patients undergoing LS vs. RS from 2014 to 2019. Patient demographics, diagnosis, spleen size, hospital length of stay (LOS), operative time, post-operative opioid use, and hospital charges were evaluated. Standard univariate analyses were performed.

RESULTS

Twenty-four patients were included in the study (14 LS, 10 RS). The mean spleen size at the time of surgery was larger in the RS group compared to LS (14.5 cm vs. 12.2 cm, p = 0.03). Operative time between the two cohorts was comparable (RS 140.5 vs LS 154.9 min). Median LOS for RS was shorter than LS (2.1 vs. 3.2 days, p = 0.02). Cumulative postoperative opioid analgesic requirements were not significantly different between the groups (17.4 mg vs. 30.5 mg). The median hospital charges, including the surgical procedure and hospital stay were higher in the RS group ($44,724 RS vs $30,255 LS, p = 0.01).

CONCLUSION

Robotic splenectomy is a safe and feasible option for pediatric patients with hematologic disorders, and was associated with decreased LOS but higher charges compared to laparoscopic splenectomy. Further studies are required to delineate the optimal use and potential benefits of robot-assisted surgical techniques in children.

LEVEL OF EVIDENCE

II.

Robotic upper tract surgery in infants 6 months or less: is there enough space?

Robot-assisted laparoscopic surgery (RALS) has recently been described in children < 1 year old. However, little data exist on robotic utilization in infants ≤ 6 months old, likely due to concerns for limited intraabdominal space and decreased distance between ports in this cohort. We hypothesized that the robotic approach can be successfully used for infants ≤ 6 months old. A prospectively collected database of patients undergoing urologic robotic surgery at our institution was reviewed. Patients ≤ 6 months and ≥ 4 kg were included. Patient demographics, intraoperative details, hospital length of stay, and complications were reviewed. Descriptive statistics were performed. Twelve patients ≤ 6 months old underwent urologic robotic surgery by three surgeons at our institution (2013-2019): pyeloplasty (6), ureteroureterostomy (4), heminephrectomy (1), and nephrectomy (1). Median age at surgery was 4.75 months (IQR 4, 6). Median weight was 7.09 kg (IQR 6.33, 7.78). Median console time was 105 min (IQR 86, 123). For all procedures, 8-mm robotic arm ports were used. No procedures were converted to open. Median post-operative hospital stay was 24 h (IQR). Febrile UTI was the only complication occurring within 30 days of surgery (n = 4, 33%; 7-20 days, Clavien grade 2). For those undergoing pyeloplasty or ureteroureterostomy (n = 10), postoperative ultrasound showed improved (n = 9) or stable hydronephrosis (n = 1). At a median follow-up of 19.73 months (IQR 4.27, 38.32), no patient required an unplanned secondary intervention. Robotic upper urinary tract surgery is feasible and safe in patients ≤ 6 months of age and can be performed successfully with the same technique as for older children.

Robot-Assisted Radical Cystectomy for Pediatric Bladder Rhabdomyosarcoma

Background: The standard treatments for muscle-invasive bladder cancer with no metastasis are total cystectomy and urinary diversion. Although robot-assisted radical cystectomy (RARC) was covered from April 2018 by the Japanese National Health Insurance system, and the number of RARC is increasing, there has been no pediatric case report on RARC in Japan. Case Presentation: We report the case of a 6-year-old Japanese girl who was referred to our hospital with the chief complaint of a vulvar tumor protrusion during defecation. We resected the tumor from her external urethral meatus, and transurethral resection for the residual partial bladder neck tumor was performed for both a definitive diagnosis and as a possible curative therapy. The pathologic diagnosis was an embryonic type of rhabdomyosarcoma. Although she was treated by chemotherapy combined with proton therapy, a residual tumor at the neck and a new lesion at the top of bladder were observed 2 years after initial treatment. Thus, RARC was performed. The surgical specimen was placed in an end-pouch and was then removed through the incised vaginal wall, with cosmetic consideration. A bilateral cutaneous ureterostomy was performed at the sites of the working ports for urinary diversion. In the future, we plan to perform abdominal wall catheterization. Postoperatively, she was treated with adjuvant chemotherapy. There was no recurrence for 19 months. Conclusion: Because she was a child, particularly a girl, the wounds should be small and inconspicuous considering the cosmetic aspect. Although the posterior aspect of the bladder seemed difficult to detach because of the adhesions, it was possible to safely perform RARC.

Robotic surgery in paediatric patients: Our initial experience and roadmap for successful implementation of robotic surgery programme

Introduction:

The popularity of robot-assisted surgeries has accelerated since its advent in 1990s. Recently, we procured da Vinci surgical system in our institution; and here, we present our initial experience of robot-assisted surgeries at our hospital. We also discuss the stepwise approach for successful implementation of the robotic surgical programme at our institute. Moreover, the importance of efficient use of this advanced but expensive technology has been highlighted.

Materials and Methods:

Retrospective analysis of the medical record of all the paediatric patients between the age ranges of 1–18 years who had undergone robotic-assisted laparoscopic surgery during April 2019–April 2019 was done. Medical record was reviewed for descriptive data, clinical presentation, investigations, operative details and follow-up. Statistical data were also obtained from medical superintendent office.

Results:

During April 2018–April 2019, total of 111 cases were operated across six specialities. Approximately 73% of cases (81/111) belonged to adult urology and gynaecology speciality. Less than 5% (5/111) of patients were in paediatric age group. The department of paediatric surgery performed one pyeloplasty, 3 ureteric reimplantation and 1 bladder diverticulum excision with robot assistance. The operative duration of the cases was comparable to the standard laparoscopic techniques. All patients are asymptomatic on follow-up visits.

Conclusion:

The robotic surgery is feasible in paediatric population and has favourable post-operative outcomes. Detailed planning and stepwise approach is key to the establishment of new robotic surgery programme in any institute.

Comparison of Safety, Efficacy and Outcomes of Robot Assisted Laparoscopic Pyeloplasty vs Conventional Laparoscopy

Pyeloplasty is considered the gold standard for the management of ureteropelvic junction obstruction in cases of flank pain, recurrent stone formation or infection, and deteriorating renal function. Over the last two decades, minimally invasive techniques such as robotic (RALP) and laparoscopic pyeloplasty (LP) have become increasingly popular and have been moderately replacing the open approach. This paper aims to provide a comprehensive up-to-date review on safety, efficacy and outcomes regarding robotic repair of UPJO compared to the conventional laparoscopic procedure. RALP represents a viable and innovative alternative to conventional LP with a comparable success and complication rate both in adult and in paediatric fields. The robotic approach seems to add further technical advantages when compared to conventional LP but sustains a higher costs. Currently, the choice to adopt one of the different minimally invasive approaches depends on the surgeon's preference or experience, and on institutional availability.

Instituting robotic pediatric urologic surgery in the Canadian healthcare system: Evaluating the feasibility and outcomes of robot-assisted pyeloplasty and ureteric reimplantation

INTRODUCTION

Robotic pediatric urologic surgery has gained wide-spread adoption over the last decade. This article describes our experience in instituting the first pediatric urologic robotic surgery program in Canada. We evaluated the feasibility and safety of instituting pediatric robot-assisted urologic surgery and report our early outcomes for robot-assisted pyeloplasty (RAP) and ureteric reimplantation (RUR).

METHODS

We prospectively evaluated all patients undergoing RAP and RUR by a single surgeon from June 2013 to March 2019. Demographic and clinical data were prospectively collected and included sex, age, and preoperative grade of hydronephrosis or reflux. Descriptive statistics were performed, and comparisons were made using Student's t-tests where appropriate. Success was defined as resolution or significant improvement of hydronephrosis following RAP and absence of recurrent urinary tract infection (UTI) and/or persistent vesicoureteric reflux (VUR) following RUR. Complications were described using the Clavien-Dindo system.

RESULTS

A total of 52 RAPs and 24 RURs were performed with a minimum of six months followup. Forty-five RAP patients met criteria for success, while diagnostic imaging of success in the form of MAG-3 Lasix renograms was documented in the remaining seven for an overall success of 100%. Sixteen RUR patients met criteria for success and seven showed resolution of VUR on imaging following their first UTI, for an overall success rate of 96%. Operative times progressively improved from 204±35 minutes to 121±15 minutes in the RAP group and from 224±52 to 132±39 minutes in the RUR group. In the RAP cohort, one Clavien grade II and four Clavien grade III complications were noted, while three Clavien grade III complications were noted in the RUR cohort.

CONCLUSIONS

Despite limited case volumes, robotic pediatric urologic surgery can be integrated into the Canadian healthcare system with success rates comparable to reported literature. However, compared to open surgery, RAP, and especially RUR, warrant further study to ensure lack of significant complications noted in our study.

Lumboscopic-Assisted Pyeloplasty: A Single-Port, Retroperitoneoscopic Approach for Children with Pelvi-Ureteric Junction Obstruction

Introduction:

Pelvi-ureteric junction obstruction (PUJO) is one of the most common conditions presenting to a pediatric urologist. As laparoscopic or robotic-assisted pyeloplasty, either transperitoneal or retroperitoneal, involves intracorporeal suturing skills and has a long learning curve, they have not gained popularity among beginners in laparoscopy.

Objective:

We conducted a study to assess the results of a single-port, retroperitoneoscopic approach to renal access, i.e. lumboscopic-assisted pyeloplasty (LAP), by single surgeon at our institute.

Materials and Methods:

A retrospective review of all children who underwent LAP from July 2013 to March 2018 was conducted. Patients who presented with PUJO and required surgical treatment were included. A single-port lumboscopy using coaxial telescope was performed in prone position in all patients. The renal pelvis was dissected and retrieved through the port site followed by extracorporeal hand-sewn pyeloplasty over a double–J stent or a nephrostent. The operative time, postoperative pain, surgical complications, duration of hospital stay, follow-up, and cosmesis at 6 months postsurgery were evaluated.

Results:

A total of 96 children were included (72 males and 24 females), with the age at operation ranging from 3 months to 10 years (mean = 4.9 years). All patients had an uneventful postoperative recovery. Two patients had a superficial wound infection, and one patient was converted to open approach due to excessive bleeding. The average operating time was 80 ± 22.5 min, the median duration of hospital stay was 3 days, and the average scar length at 3 months was 15.6 ± 0.4 mm. Follow-up renogram (diethylenetriamine pentaacetic acid) showed satisfactory postpyeloplasty drainage pattern in 93 children while three showed obstructive drainage curves.

Conclusion:

LAP can be performed safely with minimal retroperitoneal dissection, excellent cosmetic results, and minimal postoperative pain in children with PUJO. It has a shorter learning curve as compared to laparoscopic pyeloplasty as it involves time tested extracorporeal hand-sewn anastomosis.

Robot-Assisted Laparoscopic Urachal Excision Using Hidden Incision Endoscopic Surgery Technique in Pediatric Patients

Introduction: Although laparoscopic urachal excision in children has been well reported, there are limited data on a robot-assisted surgery (RAS) approach. The hidden incision endoscopic surgery (HIdES) technique is an established method of eliminating visible scars following a number of RAS urologic procedures. We report our experience of using a robotic approach to treat urachal anomalies in children, and we present the first description of utilizing the HIdES port configuration for this procedure. Materials and Methods: We retrospectively reviewed pediatric patients who underwent resection of a urachal remnant at our institution from 2013 to 2018. Surgical techniques were either the traditional open approach (OA) or RAS. HIdES trocar placement configuration was employed in all robotic cases. Patient demographics, perioperative data, pathology reports, and outcomes were abstracted and compared. Results: Twenty-three patients underwent a urachal remnant resection in the study period (RAS: 14 patients vs OA: 9 patients). RAS patients were older (8.5 vs 2.0 years, p = 0.031) and weighed more than OA patients (36.1 vs 13.9 kg, p = 0.063). Median operative time for RAS was longer than OA operative time (136 vs 33 minutes, p < 0.01). Fewer RAS patients were outpatient compared with OA (7.1% vs 66.7%, p < 0.01), but with a median length of stay of 1 day (0-1 day). Two patients (14.3%) in the RAS group experienced postoperative complications within 1 week of the procedure compared with 1 (11.1%) in the OA group. There was no significant difference in blood loss, postoperative narcotic requirements, or duration of follow-up between both groups. Conclusion: RAS is a safe and feasible alternative to open surgery for urachal anomalies. Complete excision can be achieved by using HIdES port configuration, allowing for excellent cosmetic outcomes that are superior to traditional surgical scars without limitation to essential surgical ergonomics.

Considerations regarding pain management and anesthesiological aspects in pediatric patients undergoing minimally invasive surgery: robotic vs laparoscopic-thoracoscopic approach

In the last decade, the applicability of robotic surgery has been demonstrated in many interventions, expanding the indications of minimally invasive surgery also to pediatrics. The aim of the study is to evaluate postoperative pain to demonstrate better control following robotic procedures compared to thoraco-laparoscopic surgery. An observational, retrospective, multicentre study was performed involving 204 children undergoing robot-assisted surgery and thoraco/laparoscopic surgery at the Istituto Giannina Gaslini in Genoa and the Siena University Hospital (2013-2017): 83 children underwent robotic-assisted surgery and 121 thoracic-laparoscopic surgery. Personal data and type of intervention were assessed, dividing the patients into four categories: thoracic, gastrointestinal, hepatobiliary and urological surgeries. We analyzed the anesthetic risk according to ASA classification by type of intervention, the type of anesthesia used, the anesthetic drugs used during surgery and in the postoperative period. Both the problems that occurred during the procedures and the number of interventions converted into open during robotic surgery and laparoscopic thoracic surgery were analyzed. Pain was measured on the 1st, 2nd and 3rd day (FLACC or NRS scales). By comparing the two groups (robotics-non-robotics), the analysis shows that postoperative pain does not change with the chosen approach, but always maintains very low values, typical of minimally invasive surgery. The pain score is significantly higher in patients undergoing thoracic surgery, either robotic or thoracoscopic, compared to those undergoing gastrointestinal surgery (P corrected according to Bonferroni: 0.0006) and those undergoing urological intervention (P corrected according to Bonferroni: 0.04). In conclusion, no significant change in the intensity of postoperative pain between the two groups was found, while it is seen that the pain in patients undergoing thoracic interventions (robotic/thoracoscopic) is more intense than that reported for other types of interventions.

Update on Surgical Management of Pediatric Urolithiasis

Urolithiasis has always been a fascinating disease, even more so in children. There are many intriguing facets to this pathology. This article is a nonsystematic review to provide an update on the surgical management of pediatric urolithiasis. It highlights the pros and cons of various minimally invasive surgical options such as extracorporeal shockwave lithotripsy (ESWL), retrograde intrarenal surgery (RIRS), percutaneous nephrolithotomy (PCNL), laparoscopy, and robotics. This article also describes the various intracorporeal disintegration technologies available to fragment the stone, including the newer advancements in laser technology. It also emphasizes the cost considerations especially with reference to the emerging economies. Thus, this manuscript guides how to select the least-invasive option for an individual patient, considering age and gender; stone size, location, and composition; and facilities and expertise available.

The Future of Robotic Surgery in Pediatric Urology: Upcoming Technology and Evolution Within the Field

Since the introduction of the Da Vinci Surgical System (Intuitive Surgical, Inc., Sunnyvale, CA) in 1999, the market for robot assisted laparoscopic surgery has grown with urology. The initial surgical advantage seen in adults was for robotic prostatectomy, and over time this expanded to the pediatric population with robotic pyeloplasty. The introduction of three-dimensional visualization, tremor elimination, a 4th arm, and 7-degree range of motion allowed a significant operator advantage over laparoscopy, especially for anastomotic suturing. After starting with pyeloplasty, the use of robotic technology with pediatric urology has expanded to include ureteral reimplantation and even more complex reconstructive procedures, such as enterocystoplasty, appendicovesicostomy, and bladder neck reconstruction. However, limitations of the Da Vinci Surgical Systems still exist despite its continued technological advances over multiple generations in the past 20 years. Due to the smaller pediatric market, less focus appears to have been placed on the development of the smaller 5 mm instruments. As pediatric urology continues to utilize robotic technology for minimally invasive surgery, there is hope that additional pediatric-friendly instruments and components will be developed, either by Intuitive Surgical or one of the new robotic platforms in development that are working to address many of the shortcomings of current systems. These new robotic platforms include improved haptic feedback systems, flexible scopes, easier maneuverability, and even adaptive machine learning concepts to bring robotic assisted laparoscopic surgery to the next level. In this report, we review the present and upcoming technological advances of the current Da Vinci surgical systems as well as various new robotic platforms, each offering a unique set of technological advantages. As technology progresses, the understanding of and access to these new robotic platforms will help guide pediatric urologists into the next forefront of minimally invasive surgery.

Robotic Urologic Surgery in the Infant: a Review

PURPOSE OF REVIEW

The goal of this article is to review the current role of robotic urologic surgery in the infant population across a spectrum of diseases and procedures.

RECENT FINDINGS

Robotic urological surgery has been performed in the infant population across a variety of conditions including ureteropelvic junction obstruction, vesicoureteral reflux, and duplicated and nonfunctional renal moieties. However, most of the durable evidence showing safety and success remains in the repair of the obstructed ureteropelvic junction. Included in this review are also strategies to address the limitations imposed by the unique physiology and anatomy of the infant. Robotic urologic surgery remains an alternative to other surgical approaches in the properly selected infant in the hands of experienced surgeons. As additional larger studies are performed, the utility of the robotic platform in this population will be clearer.

Advances in robotic surgery for pediatric ureteropelvic junction obstruction and vesicoureteral reflux: history, present, and future

PURPOSE

The introduction of robotic surgical technology into urological reconstruction, particularly pediatrics, has introduced new horizons for reducing the morbidity and enhancing the efficacy of surgical repair of congenital conditions in children. In reviewing the evolution of pediatric urological applications of robotic surgery, we wanted to address the different levels of reported utilization of pyeloplasty and ureteral reimplantation as two of the most common procedures.

METHODS

Review of the published literature sought to explore the described variation in clinical application of these two common procedures, and the evolution of the practice over time.

RESULTS

Reported outcomes suggest that variations in patient selection, the learning curve and in reporting of outcomes all contribute to the wide variation in utilization of pediatric robotic pyeloplasty and ureteral reimplantation.

CONCLUSIONS

These technologies are demonstrating their potential as well as the challenges of use in children and there is a steady evolution of capability. Practitioners should be aware of both the possibilities as well as the risks of such new technology in the care of our patients. This requires thorough and open reporting of outcomes, the willingness to introduce change and integrate new findings into practice.

Pediatric Robotic Surgery in South America: Advantages and Difficulties in Program Implementation

Robotic assisted laparoscopic surgery is gaining popularity around the world due to its vast benefits. Although it has been established mainly in developed countries, in South America the robotic programs have become more popular, but its growth is clearly slower. Information about robotic pediatric surgery program in Brazil, Chile, Uruguay, and Argentina was collected through e-mail surveys. Results were analyzed and compared to worldwide information about robotic surgery. Due to the wide social, economical, and technological gap between hospitals in South America, it is hard to develop a proper pediatric robotic surgery program. The main obstacles in those four countries appear to be a combination of high purchase costs and equipment maintenance, lack of financial coverage of the procedure by insurance companies and the absence of significant benefits proved in pediatrics in relation to laparoscopic surgery. The pediatric specialties are in the process of making and implementing robotic programs supported by the evident development in adult specialties. However, pediatric robotic surgery in Brazil, Chile, Uruguay and Argentina do not seems to share that growth.

Current Concepts in Pediatric Robotic Assisted Pyeloplasty

Robotic surgery in pediatric urology has been gaining popularity since its introduction almost two decades ago. Robotic assisted pyeloplasty is the most common robotic procedure performed in pediatric urology. Advances in robotic technology, instrumentation, patient care and surgical expertise have allowed the correction of ureteropelvic junction (UPJ) obstruction in most patients using this minimally invasive technique. The excellent experience with robotic assisted pyeloplasty has challenged other approaches as a new standard for the treatment of UPJ obstruction. In this review, we will describe the technique as it relates to the different robotic platforms, review the surgical experience and compare its results to other surgical approaches. Also, we will discuss patient and parent satisfaction, cost and financial considerations, along with evaluating the future of robotic surgery in the treatment of UPJ obstruction.

Robotic Approach to Creation of Continent Catheterisable Channels-Technical Steps, Current Status, and Review of Outcomes

Purpose: To report the current status of Robotic approach to creation of Catheterisable channel (CC) with the author's personal experience compared to published literature on technical steps, follow up, and outcomes. Methods: CC data was extracted from the prospective database set up for all Robotic pediatric urology procedures performed by the author at his institution. A literature search was then performed to look at the evidence base. Results: Eighteen consecutive cases (8M:7F) of Robotic approach to creation of CC was identified and included. All attempted cases were successfully completed without any conversion to open approach. Median age at surgery was 10.75 years (IQR 6.9-16.5); Median OT 197 min (IQR 131-295) with concomitant procedures in 4 cases. Appendix was used in 14 cases as CC conduit and distal ureter in 4 cases. Median Length of stay (LOS) was 2.75 days (IQR 2-6) and Median FU 27.3 m. Whilst FU duration is comparable to published series, average OT and LOS was much lower in this series. The LOS in this robotic series is much lower than the author's experience with open approach (2.75 vs. 5.8 days). No major complications postoperatively except for one exit site wound infection managed conservatively. None of the CC have been revised in this series and all channels are patent with 12 F or 14 F admissible catheter size. There were no cases of incontinence related to technique of creation of CC and no incidence of exit site stomal stenosis with use of ACE stopper until channel matures and Clean intermittent catheterisation (CIC) is established. Conclusion: Robotic approach to CC is feasible, safe with excellent outcomes and minimum morbidity. Robotic complex bladder reconstructive surgery offers some advantages to children compared to open approach but is only currently performed in few tertiary centers with expertise.

Robotic surgery in pediatric urology: Current status

Robot-assisted laparoscopic surgery (RALS) has been increasingly embraced in the fields of adult and pediatric urology, especially in North America and Europe. The advantages of a stable magnified 3-D view, tremor filtering, and motion scaling allow for precise intracorporeal exposure and suturing. Because most surgeries are performed as reconstructive rather than excision procedures, the robotic platform is particularly feasible for the field of pediatric urology. In this review, we summarize the recent viewpoints on RALS, such as pyeloplasty, ureteral reimplantation, bladder neck reconstruction, bladder neck sling, appendicovesicostomy, bladder diverticulectomy, and treatments for ureterocele or ectopic ureters, and we also critically summarize the current status of the literature. Based on our initial experience, RALS is technically feasible for pediatric patients and may be achieved with comparable surgical outcomes. RALS is also associated with reduced morbidity compared to open surgery to conventional laparoscopic surgery. This evolution will offer an alternative in the treatment pediatric patients, along with improved care and patient quality of life. Further large case series and randomized controlled trials that investigate the robotic platform's technological improvements will help to expand indications of RALS in the field of pediatric urology.

Pediatric Robotic Prostatectomy and Pelvic Lymphadenectomy for Embryonal Rhabdomyosarcoma

We present the first published case of a pediatric robot-assisted prostatectomy and pelvic lymphadenectomy for refractory prostatic embryonal rhabdomyosarcoma. The patient is a 7-year-old male who had been treated with 3 cycles of chemotherapy and radiation, who underwent prostatectomy and lymphadenectomy for a recurrent mass. Surgery was uncomplicated and yielded negative surgical margins. We highlight the surgical technique and feasibility of utilizing robotic surgery for pediatric prostatectomy.

Robot-assisted ureteroureterostomy in pediatric patients: current perspectives

Developments in pediatric robotic surgery have increased the feasibility of minimally invasive surgery for complex urinary tract reconstruction. Ureteroureterostomy is a commonly employed strategy for the management of a duplicated ureteral system with either upper pole obstruction or lower pole vesicoureteral reflux, and this approach minimizes the risk to a healthy ureter as might be seen in a common sheath ureteral reimplant and avoids complex dissection around the renal hilum as with a heminephrectomy. The robotic platform enables optimum instrument manipulation for an end-to-side ureteral anastomosis as well as excellent visualization deep into the pelvis for excision of the distal ureteral stump. In this study, the indications and preoperative evaluation for pediatric robotic ureteroureterostomy (RUU) were described and intraoperative considerations for a successful repair were highlighted. In order to assess the outcomes, a PubMed search was performed to find the articles focusing on RUU in the pediatric population. The institutional experience of the authors was also reviewed. As with an open procedure, both minimizing dissection on the recipient ureter and ensuring a tension-free, watertight anastomosis are key principles to minimize complications. Although port placement is similar to that in robotic pyeloplasty, small adjustments may need to be made to ensure access to the pelvis. An assistant port and/or traction sutures is often used to aid in the dissection and anastomosis. RUU was first described in 2008, and several reports have demonstrated positive short-term results. However, median follow-up times are limited with most series reporting outcomes <1 year postoperatively. A future study is required to establish the long-term efficacy of this procedure and define the optimum patient population for a robotic approach.