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Miyano G, Iida H, Ebata Y, Abe E, Kato H, Mikami T, Ishii J, Lane GJ, Yamataka A, Okazaki T. Retroperitoneoscopic Simple Nondismembered Pyeloplasty with Da Vinci Si Assistance to Prevent Alignment Shift. J Laparoendosc Adv Surg Tech A 2024; 34:371-375. [PMID: 38502848 DOI: 10.1089/lap.2023.0236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024] Open
Abstract
Aims: Retroperitoneoscopic simple nondismembered pyeloplasty (SNDP) with da Vinci Si assistance was developed because of a possible risk for alignment shift after retroperitoneoscopic diamond-shaped bypass pyeloplasty (Diamond-Bypass; DP). Outcomes of SNDP and DP were compared. Materials and Methods: For SNDP, a small longitudinal incision is made on the border of the dilated pelvis and narrowed ureter at the ureteropelvic junction (UPJ). Extending this incision toward the pelvis allows identification of mucosa while maintaining the integrity of surrounding tissues that are so thin and fragile that they will not influence lumen alignment. Data for DP were obtained from a previously published article. Results: For SNDP (n = 3), mean age at surgery was 2.67 years (range: 1-4), mean operative time was 176 minutes. Mean postoperative Society of Fetal Urology (SFU) grades for hydronephrosis were 1.2, 0.7, and 0.6, 1, 2, and 3 months after stent removal, respectively. Postoperative diethylenetriaminepentaacetic acid (DTPA) was normal (n = 3). For DP (n = 5) mean age at surgery was 4.3 years (range: 1-14), mean operative time was 189 minutes. Mean postoperative SFU grades were 2.8, 2.2, and 1.6, respectively. Postoperative DTPA was normal (n = 4) and delayed (n = 1). All SNDP and DP were asymptomatic by 3 months after stent removal. Conclusion: Both SNDP and DP have favorable outcomes. If the UPJ is located at the lowest end of the renal pelvis, SNDP may improve hydronephrosis more quickly.
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Affiliation(s)
- Go Miyano
- Department of Pediatric Surgery, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Hisae Iida
- Department of Pediatric Surgery, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Yu Ebata
- Department of Pediatric Surgery, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Eri Abe
- Department of Pediatric Surgery, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Haruki Kato
- Department of Pediatric Surgery, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Takafumi Mikami
- Department of Pediatric Surgery, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Junya Ishii
- Department of Pediatric Surgery, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Geoffrey J Lane
- Department of Pediatric General and Urogenital Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Atsuyuki Yamataka
- Department of Pediatric General and Urogenital Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Tadaharu Okazaki
- Department of Pediatric Surgery, Juntendo University Urayasu Hospital, Chiba, Japan
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Güzel R, Yildirim Ü, Sarica K. Contemporary minimal invasıve surgical management of stones in children. Asian J Urol 2023. [PMID: 37538162 PMCID: PMC10394283 DOI: 10.1016/j.ajur.2023.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
Objective Pediatric urolithiasis has been more common over the past 20 years, and urologists have unique challenges in managing it surgically because this particular demographic is recognized as one of the high-risk categories for stone recurrence. Given this reality, care focuses on maintaining renal function, achieving total stone-free status, and most importantly avoiding stone recurrences. In this presented article, we aimed to make a comprehensive review of the current minimally invasive treatment of pediatric kidney stone disease. Methods We evaluated the results of 74 studies following a comprehensive PubMed search till February 2023. This article was written by making use of current urology guidelines. Results Considering the reported occurrence of metabolic issues in up to 50% of cases in addition to the anatomic anomalies (about 30% of cases), the treatment of pediatric urolithiasis necessitates a full metabolic and urological examination on an individual basis. Timely management of metabolic imbalances and obstructive diseases is necessary. In addition to encouraging proper fluid consumption, it is advisable to improve urine volume and consider using medical therapeutics to raise urinary citrate levels. The location, content, and size of the stone(s), the morphology of the collecting system, the presence of urinary tract infection, as well as the presence of any obstruction, should all be taken into consideration while deciding on the best surgical procedure. Conclusion All modern endourological methods are now used in the safe and efficient care of pediatric urolithiasis as a consequence of the obvious advancements in instrument technology and expanding expertise derived from adult patients. Other minimally invasive procedures, such as ureterorenoscopy and percutaneous nephrolithotomy, require more expertise and can be successfully applied with careful management for an excellent stone-free rate with minimal morbidity. Of these procedures, shock wave lithotripsy is still the first choice in the majority of cases with upper tract calculi. Open surgery will still be the therapy of choice for pediatric patients with complicated and big stones as well as anatomical anomalies.
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Robot-Assisted Retroperitoneoscopic Diamond Bypass Pyeloplasty. J Pediatr Surg 2023:S0022-3468(23)00173-2. [PMID: 36931935 DOI: 10.1016/j.jpedsurg.2023.02.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 02/20/2023] [Indexed: 02/25/2023]
Abstract
AIM Robot (da Vinci Si; Intuitive Surgical, Sunnyvale, CA) assisted retroperitoneoscopic diamond bypass pyeloplasty (R-RDBP) performed for ureteropelvic junction (UPJ) obstruction (n = 5) is presented. METHODS Patients were placed affected side up and the retroperitoneal space accessed conventionally using 3-4 trocars. The diamond-shaped anastomosis involved incising the lowest part of the renal pelvis 12-15 mm transversely and the ureter distal to the obstruction 10-12 mm longitudinally. The first two sutures were placed retroperitoneoscopically; one from the mid-caudal line of the renal pelvis to the apex of the ureteric incision (the apex of the diamond) and the other from the corner of the incision in the renal pelvis to halfway along the ureteric incision. Trocars were replaced and the robot system docked. The first robot suture was placed between these two sutures, and the anastomosis completed by suturing from posterior to ventral applying minimal tension to keep the anastomosis close to the renal pelvis. All sutures were interrupted absorbable 5-0 monofilament. RESULTS Mean age at R-RDBP was 4.3 (range: 1-14) years old. Height/weight were average. Preoperative Society for Fetal Urology (SFU) grading was 4.0 in all cases. All repairs were primary and progressed smoothly without perioperative complications; 3/5 had improved appetite postoperatively. Mean SFU grades 1-3 months postoperatively were 2.8, 2.2, and 1.6, respectively. Diuretic renography that was obstructive in all cases preoperatively was normal in four and delayed in one case, postoperatively. CONCLUSION R-RDBP prevented rotation/kinking of the ureter, enhanced precision of suturing, and maximized the diameter at the anastomosis, facilitating smooth urine flow. LEVEL OF EVIDENCE LEVEL IV.
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Mei H, Tang S. Robotic-assisted surgery in the pediatric surgeons' world: Current situation and future prospectives. Front Pediatr 2023; 11:1120831. [PMID: 36865692 PMCID: PMC9971628 DOI: 10.3389/fped.2023.1120831] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Accepted: 01/24/2023] [Indexed: 02/16/2023] Open
Abstract
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.
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Affiliation(s)
- Hong Mei
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Shaotao Tang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Pakkasjärvi N, Krishnan N, Ripatti L, Anand S. Learning Curves in Pediatric Robot-Assisted Pyeloplasty: A Systematic Review. J Clin Med 2022; 11:jcm11236935. [PMID: 36498510 PMCID: PMC9737296 DOI: 10.3390/jcm11236935] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 11/26/2022] Open
Abstract
Background: Robot-assisted surgery demands a specific skillset of surgical knowledge, skills, and attitudes from the robotic surgeon to function as part of the robotic team and for maximal utility of the assistive surgical robot. Subsequently, the learning process of robot-assisted surgery entails new modes of learning. We sought to systematically summarize the published data on pediatric robot-assisted pyeloplasty (pRALP) to decipher the learning process by analyzing learning curves. Methods: This review followed the PRISMA guidelines. PubMed, EMBASE, Web of Science, and Scopus databases were systematically searched for ‘learning curve’ AND ‘pediatric pyeloplasty’. All studies presenting outcomes of learning curves (LC) in the context of pRALP in patients < 18 years of age were included. Studies comparing LC in pRALP versus open and/or laparoscopic pyeloplasty were also included; however, those solely focusing on LC in non-robotic approaches were excluded. The methodological quality was assessed using the Newcastle and Ottawa scale. Results: Competency was non-uniformly defined in all fifteen studies addressing learning curves in pRALP. pRALP was considered safe at all stages. Proficiency in pRALP was reached after 18 cases, while competency was estimated to demand 31 operated cases with operative duration as outcome variable. Conclusions: Pediatric RALP is safe during the learning process and ‘learning by doing’ improves efficiency. Competencies with broader implications than time must be defined for future studies.
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Affiliation(s)
- Niklas Pakkasjärvi
- Department of Pediatric Surgery, Turku University Hospital, 20521 Turku, Finland
| | - Nellai Krishnan
- Department of Pediatric Surgery, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Liisi Ripatti
- Department of Pediatric Surgery, Turku University Hospital, 20521 Turku, Finland
| | - Sachit Anand
- Department of Pediatric Surgery, All India Institute of Medical Sciences, New Delhi 110029, India
- Correspondence: ; Tel.: +91-9654215906
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Shen LT, Tou J. Application and prospects of robotic surgery in children: a scoping review. WORLD JOURNAL OF PEDIATRIC SURGERY 2022; 5:e000482. [PMID: 36474741 PMCID: PMC9717356 DOI: 10.1136/wjps-2022-000482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 09/28/2022] [Indexed: 01/25/2023] Open
Abstract
As an innovative minimally invasive surgical technology, robot-assisted surgery (RAS) has greatly improved the accuracy and safety of surgery through the advantages of three-dimensional magnification, tremor filtering, precision and flexibility, and has been carried out by an increasing number of surgeries. In recent years, robots have been gradually applied to children, bringing new ideas and challenges to pediatric surgeons. This review will describe the advantages and limitations of robotic surgery in children, summarize its application in pediatric surgery, and provide an outlook. It is believed that clinicians should actively carry out RAS under the premise of rigorously ensuring surgical indications and strive to improve the efficacy of surgical treatment for children.
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Affiliation(s)
- Lei Ting Shen
- Neonatal Surgery, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jinfa Tou
- Neonatal Surgery, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Bramhe S, Pathak SS. Robotic Surgery: A Narrative Review. Cureus 2022; 14:e29179. [PMID: 36258968 PMCID: PMC9573327 DOI: 10.7759/cureus.29179] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 09/15/2022] [Indexed: 11/05/2022] Open
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Xu D, Gao H, Yu S, Huang G, Lu D, Yang K, Zhang W, Zhang W. Ensuring safety and feasibility for resection of pediatric benign ovarian tumors by single-port robot-assisted laparoscopic surgery using the da Vinci Xi system. Front Surg 2022; 9:944662. [PMID: 36061048 PMCID: PMC9437548 DOI: 10.3389/fsurg.2022.944662] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 07/11/2022] [Indexed: 11/30/2022] Open
Abstract
Background Single-port robot-assisted laparoscopic surgery (S-RALS) is rarely applied in pediatric surgery. There is still no study on the application of S-RALS for resection of pediatric benign ovarian tumors. The current study aimed to investigate the safety and feasibility of S-RALS for resection of pediatric benign ovarian tumors using the da Vinci Xi system. Methods The clinical data of three patients who underwent S-RALS for resection of benign ovarian tumors in the Department of Pediatric Surgery, Zhongnan Hospital of Wuhan University from May 2020 to September 2021 were retrospectively analyzed. The mean age of these children was 7.9 years (5.8–9.3 years). One was a case of bilateral ovarian tumors, and the other two were cases of right ovarian tumors. Results All three patients successfully underwent the resection of ovarian tumors through S-RALS without conversion to laparotomy. The average operation time was 180 min (118–231 min). The average amount of blood loss was 20 ml (10–35 ml). No drainage tube was placed. All postoperative pathological types of ovarian tumors were mature cystic teratomas in the three cases. All patients started a liquid diet 2 h after surgery. The average length of postoperative hospital stay was 4.7 days (3–7 days). No tumor recurred, no surgical site hernia occurred, and the wound healed very well with a cosmetic scar in the lower umbilical crease during the postoperative follow-up for 6–18 months. Conclusion S-RALS has the advantages of less surgical trauma, quick postoperative recovery, and a cosmetic scar in the lower umbilical crease. It is safe, effective, and feasible for pediatric benign ovarian tumors.
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Affiliation(s)
- Deqiang Xu
- Department of Pediatric Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Heyun Gao
- Department of Pediatric Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Shanzhen Yu
- Department of Pediatric Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Guangbin Huang
- Department of Pediatric Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Dan Lu
- Department of Ultrasound Imaging, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Kun Yang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Wei Zhang
- Department of Gynaecology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Wen Zhang
- Department of Pediatric Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
- Correspondence: Wen Zhang
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Esposito C, Blanc T, Lardy H, Masieri L, Fourcade L, Mendoza-Sagaon M, Nappo S, Lopez M, Pelizzo G, Steyaert H, Gamba P, Scuderi MG, Escolino M, Castagnetti M, Chiarenza F, Ghoneimi AE. Robotic Surgery in Pediatric Urology: A Critical Appraisal of the GECI and SIVI Consensus of European Experts. J Laparoendosc Adv Surg Tech A 2022; 32:1108-1113. [PMID: 35796702 DOI: 10.1089/lap.2021.0837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
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.
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Affiliation(s)
- Ciro Esposito
- Division of Pediatric Surgery, Federico II University Hospital, Naples, Italy
| | - Thomas Blanc
- Division of Pediatric Surgery, Hôpital Necker Enfants Malades, Paris, France
| | - Hubert Lardy
- Division of Pediatric Surgery, CHU-Centre de Pédiatrie de Clocheville, Tours, France
| | - Lorenzo Masieri
- Division of Pediatric Urology, Meyer Children Hospital, Florence, Italy
| | - Laurent Fourcade
- Division of Pediatric Surgery, Hôpital de la Mère et de l'Enfant, Limoges, France
| | - Mario Mendoza-Sagaon
- Division of Pediatric Surgery, Ospedale Regionale di Bellinzona e Valli, Bellinzona, Switzerland
| | - Simona Nappo
- Division of Pediatric Urology, Regina Margherita Hospital, Turin, Italy
| | - Manuel Lopez
- Division of Pediatric Surgery, Val d'Hebron Maternity and Children's Hospital, Barcelona, Spain
| | - Gloria Pelizzo
- Division of Pediatric Surgery, Buzzi Children Hospital, Milan, Italy
| | - Henri Steyaert
- Division of Pediatric Surgery, Huderf Children's Hospital, Brussels, Belgium
| | - Piergiorgio Gamba
- Division of Pediatric Surgery, Medical University of Padua, Padua, Italy
| | | | - Maria Escolino
- Division of Pediatric Surgery, Federico II University Hospital, Naples, Italy
| | - Marco Castagnetti
- Division of Pediatric Urology, Bambin Gesù Children Hospital, Rome, Italy
| | - Fabio Chiarenza
- Division of Pediatric Surgery, San Bortolo Hospital, Vicenza, Italy
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Peng T, Zhong H, Hu B, Zhao S. Minimally invasive surgery for pediatric renal and ureteric stones: A therapeutic update. Front Pediatr 2022; 10:902573. [PMID: 36061394 PMCID: PMC9433542 DOI: 10.3389/fped.2022.902573] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 07/20/2022] [Indexed: 11/29/2022] Open
Abstract
The incidence of pediatric urolithiasis (PU) is growing worldwide. The corresponding therapeutic methods have become a research hot spot in pediatric urology. PU has the characteristics of abnormal metabolism, easy recurrence, and immature urinary system development, which make its treatment different from that of adults. Pediatric urologists should select the optimal treatment modality to completely remove the stones to prevent recurrence. Currently, the curative treatments of PU include extracorporeal shock wave lithotripsy (ESWL), ureteroscopy, retrograde intrarenal surgery, percutaneous nephrolithotomy (PCNL), laparoscopic, robot-assisted laparoscopic, and open surgery. This review aims to conduct a therapeutic update on the surgical interventions of both pediatric renal and ureteric stones. It accentuates that pediatric surgeons or urologists should bear in mind the pros and cons of various minimally invasive surgical treatments under different conditions. In the future, the treatment of PU will be more refined due to the advancement of technology and the development of surgical instruments. However, a comprehensive understanding of the affected factors should be taken into account by pediatric urologists to select the most beneficial treatment plan for individual children to achieve precise treatment.
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Affiliation(s)
- Tao Peng
- Department of Pediatric Surgery, Huizhou Central People's Hospital, Huizhou, China
| | - Hongcai Zhong
- Department of Pediatric Surgery, Huizhou Central People's Hospital, Huizhou, China
| | - Baohui Hu
- Department of Pediatric Surgery, Huizhou Central People's Hospital, Huizhou, China
| | - Shankun Zhao
- Department of Urology, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, China
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Berrondo C, Makari JH. Current practice in robotic surgery among pediatric urologists: A survey study. J Endourol 2021; 36:740-744. [PMID: 34861774 DOI: 10.1089/end.2021.0725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
INTRODUCTION Since its introduction, robotic surgery has gained most traction among urologists. Pediatric urologists have been slower to adopt the technology compared to their adult counterparts. Our objectives were to understand current practice patterns for robotic surgery among pediatric urologists, to identify perceived barriers, and to identify factors associated with the use of robotic surgery. METHODS An anonymous online survey was administered using REDCap to members of the Societies for Pediatric Urology (SPU) including questions about provider demographics and personal practice patterns. Comparisons were made using Pearson's Chi-Squared analysis. RESULTS Of 351 SPU members surveyed, 95 completed the survey (27%). Fifty-five (58%) reported performing robotic surgery, 40 (42%) reported not performing robotic surgery. Twenty-seven (28%) reported receiving robotic training in residency, 26 (27%) in fellowship, 34 (36%) in a robotics course, and 30 (32%) with proctored surgery. Cited reasons for not performing robotic surgery were lack of training, referring to practice partners, and lack of benefit. Of those performing robotic surgery, most reported performing 0-1 or 2-4 per month. Thirty-one (56%) reported having selection criteria for use of the robot: 26 (47%) cited an age cut-off, 12 (22%) a weight cut-off, and 14 (26%) an abdominal size cut-off. Eighteen (33%) reported using hidden incisions endoscopic surgery (HIdES) approach, and 40 (42%) reported using an assistant port. Factors associated with using the robot included surgeon age, years in practice, practice setting, having robotic training, and having practice partners who perform robotic surgery. CONCLUSIONS Practice variation exists in the use and application of robotic surgery among pediatric urologists. The main self-reported barriers to performing robotic surgery are lack of training, referring to practice partners, and no perceived benefit to robotic surgery. Factors associated with performing robotic surgery were surgeon age, years in practice, practice setting, and having practice partners perform robotic surgery.
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Affiliation(s)
- Claudia Berrondo
- Children's Hospital and Medical Center, 20635, Pediatric Urology, 8200 Dodge Street, Omaha, Nebraska, United States, 68114-4113.,University of Nebraska Medical Center, 12284, Surgery (Urologic Surgery), Omaha, Nebraska, United States, 68198-7400;
| | - John H Makari
- Children's Hospital and Medical Center, 20635, Pediatric Urology, Omaha, Nebraska, United States.,University of Nebraska Medical Center, 12284, Surgery (Urologic Surgery), Omaha, Nebraska, United States;
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Esposito C, Autorino G, Castagnetti M, Cerulo M, Coppola V, Cardone R, Esposito G, Borgogni R, Escolino M. Robotics and future technical developments in pediatric urology. Semin Pediatr Surg 2021; 30:151082. [PMID: 34412879 DOI: 10.1016/j.sempedsurg.2021.151082] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Minimally invasive surgery (MIS) has represented the main innovation in the field of pediatric surgery and urology over the last 30 years. Pediatric MIS is a wide field, ranging from the standard laparoscopic surgery using 3-mm ports to robotics mainly adopted for pediatric urology indications. The aim of this paper was to summarize the current status of robotic surgery in pediatric urology and to evaluate possible future technical developments for this technique. In pediatric urology, many procedures are challenged by the narrow working space available in smaller children, the difficulty to perform complex and long suture lines to repair complex urinary malformations, and the challenge to remove renal or adrenal tumors. The main characteristic of robotic surgery is that the robotic instruments inserted into the abdominal cavity are remotely controlled by the surgeon, who is sitting at a console next to the patient or even far away, avoiding human tremor during complex suturing. Due to the magnification of the operative field view and the six degrees of freedom of the robotic instruments compared to conventional laparoscopic instruments, providing enhanced 3D vision and improved surgeon ergonomics, robot-assisted surgery appears to be beneficial over conventional MIS, especially in complex reconstructive procedures. Currently, there are two robotic systems available on the market and certified for robotic surgery in children: the DaVinci (Intuitive Surgical, since 2001) and Senhance (Transenterix, since 2020). However, almost the totality of papers published in the international literature are focused on robotic procedures using the DaVinci platform. Analyzing the current literature, there is no evidence about the indications where robotics are preferable to conventional MIS approaches. Currently, the main indications of robotic surgery in pediatric urology are: pyeloplasty for ureteropelvic junction obstruction (UPJO), ureteral reimplantation according to Lich Gregoire technique, Mitrofanoff procedure, nephrectomy or partial nephrectomy for oncological indications, removal of renal cysts, bladder neck reconstruction or removal of urinary tract stones. The future developments in this field are certainly represented by intraoperative use of indocyanine green (ICG) fluorescence imaging that permits to have a better vision of vascular anatomy or clearly identify nodes in case of tumors, and by development of 5G technology. The main limitation of robotic surgery today remains the excessive cost of the machine itself and the limited lifespan of robotic instruments. We believe that robotic surgery will surely represent the new field of development in pediatric surgery, but its widespread application will depend on the introduction of new robotic platforms in the market, that will certainly low the costs, and also to the development of smaller size instruments more suitable for pediatric use.
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Affiliation(s)
- Ciro Esposito
- Pediatric Surgery Unit, Federico II University of Naples, Via Pansini 5, 80131 Naples, Italy.
| | - Giuseppe Autorino
- Pediatric Surgery Unit, Federico II University of Naples, Via Pansini 5, 80131 Naples, Italy
| | - Marco Castagnetti
- Division of Pediatric Urology, Medical University of Padua, Padua, Italy
| | - Mariapina Cerulo
- Pediatric Surgery Unit, Federico II University of Naples, Via Pansini 5, 80131 Naples, Italy
| | - Vincenzo Coppola
- Pediatric Surgery Unit, Federico II University of Naples, Via Pansini 5, 80131 Naples, Italy
| | - Roberto Cardone
- Pediatric Surgery Unit, Federico II University of Naples, Via Pansini 5, 80131 Naples, Italy
| | - Giorgia Esposito
- Pediatric Surgery Unit, Federico II University of Naples, Via Pansini 5, 80131 Naples, Italy
| | - Rachele Borgogni
- Pediatric Surgery Unit, Federico II University of Naples, Via Pansini 5, 80131 Naples, Italy
| | - Maria Escolino
- Pediatric Surgery Unit, Federico II University of Naples, Via Pansini 5, 80131 Naples, Italy
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Vatta F, Gazzaneo M, Bertozzi M, Raffaele A, Avolio L, Riccipetitoni G. Robotics-Assisted Pediatric Oncology Surgery-A Preliminary Single-Center Report and a Systematic Review of Published Studies. Front Pediatr 2021; 9:780830. [PMID: 35118030 PMCID: PMC8805994 DOI: 10.3389/fped.2021.780830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 11/18/2021] [Indexed: 11/13/2022] Open
Abstract
AIM The use of robotics-assisted surgery in oncology has been proved effective and safe in adults. Despite these results, the use of robotics has been rarely reported for pediatric oncology. Our review aims to evaluate the safety and feasibility of robotics-assisted surgery in this field, analyzing our experience and performing a systematic review of the most recent studies. METHODS We reviewed all patients affected by an oncological disease who underwent a robotics-assisted procedure at our institute. We performed a systematic review of the literature from 2012 to 2021 on the subjects. FINDINGS A total of 14 patients underwent robotics-assisted tumor resection. Eleven procedures (median age 13.2-years old) were carried out in children with adnexal lesions (seven tumor excision and four ovariectomies). Histological diagnosis was mature teratoma (six), serous papillary cystadenofibromas of the fallopian tube (two), ovarian serous cystadenoma (one), ovarian mucinous cystadenoma (one), and ovarian seromucinous cystadenoma. The median length of stay was 2 days. No recurrences or complications at a median follow-up of 2.1-years were observed. A 5-year-old girl underwent a complete posterior resection of a type 3 sacrococcygeal tumor with a robotics-assisted approach for the dissection of a possible intraabdominal residual component of the lesion. No intra- and postoperative complications were recorded. Complete excision of a recurrent differentiating neuroblastoma of the left para-renal region was performed on a 9-year-old girl. An idiopathic anaphylactic shock occurred 1 day after the procedure. At 9 months' follow-up, no local recurrences of the lesion were observed. Overall, we reported no conversion to open surgery. Lastly, a robotic excision of a growing left superior mediastinal intermixed ganglioneuroblastoma was performed on an 8-year-old girl with no postoperative complications. Follow-up was uneventful (7 months). In the literature, the rate of complications ranges from 0 to 28%, mainly related to difficult dissection and impaired anatomy. Conversion is reported in 5% of all oncological procedures, due to more invading tumors and altered anatomical features. No robotics-related complications were reported. CONCLUSION Robotics-assisted surgery in pediatric oncology has proven to be feasible. Nevertheless, its use should be limited to selected cases and performed by highly trained oncological surgeons. Preparation and patient positioning, alongside a correct port placement, are crucial to carrying out these procedures. Further innovations in robotics may allow a wider application of this technology in pediatric oncology.
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Affiliation(s)
- Fabrizio Vatta
- Department of Pediatric Surgery, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Marta Gazzaneo
- Department of Pediatric Surgery, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Mirko Bertozzi
- Department of Pediatric Surgery, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Alessandro Raffaele
- Department of Pediatric Surgery, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Luigi Avolio
- Department of Pediatric Surgery, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
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Sinha A, Pathak M, Vig A, Saxena R. Robotic surgery in paediatric patients: Our initial experience and roadmap for successful implementation of robotic surgery programme. J Minim Access Surg 2021; 17:32-36. [PMID: 31670291 PMCID: PMC7945638 DOI: 10.4103/jmas.jmas_174_19] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
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.
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Affiliation(s)
- Arvind Sinha
- Department of Pediatric Surgery, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
| | - Manish Pathak
- Department of Pediatric Surgery, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
| | - Ayushi Vig
- Department of Pediatric Surgery, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
| | - Rahul Saxena
- Department of Pediatric Surgery, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India
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15
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Richards HW, Kulaylat AN, Cooper JN, McLeod DJ, Diefenbach KA, Michalsky MP. Trends in robotic surgery utilization across tertiary children’s hospitals in the United States. Surg Endosc 2020; 35:6066-6072. [DOI: 10.1007/s00464-020-08098-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 10/14/2020] [Indexed: 12/11/2022]
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16
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Esposito C, Masieri L, Castagnetti M, Pelizzo G, De Gennaro M, Lisi G, Cobellis G, Gamba P, Di Benedetto V, Escolino M. Current Status of Pediatric Robot-Assisted Surgery in Italy: Epidemiologic National Survey and Future Directions. J Laparoendosc Adv Surg Tech A 2020. [DOI: 10.1089/lap.2019.0516] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Ciro Esposito
- Pediatric Surgery Unit, Federico II University of Naples, Naples, Italy
| | - Lorenzo Masieri
- Pediatric Urology Unit, Meyer Children Hospital, Florence, Italy
| | | | - Gloria Pelizzo
- Pediatric Surgery Unit, Children's Hospital G. Di Cristina, ARNAS Civico-Di Cristina-Benfratelli, Palermo, Italy
| | - Mario De Gennaro
- Pediatric Urology Unit, Bambin Gesù Children Hospital, Rome, Italy
| | - Gabriele Lisi
- Pediatric Surgery Unit, G. D'Annunzio University of Chieti, Pescara, Italy
| | - Giovanni Cobellis
- Pediatric Surgery Unit, Azienda Ospedaliero-Universitaria, Ancona, Italy
| | | | | | - Maria Escolino
- Pediatric Surgery Unit, Federico II University of Naples, Naples, Italy
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Esposito C, Autorino G, Masieri L, Castagnetti M, Del Conte F, Coppola V, Cerulo M, Crocetto F, Escolino M. Minimally Invasive Management of Bladder Stones in Children. Front Pediatr 2020; 8:618756. [PMID: 33575232 PMCID: PMC7870782 DOI: 10.3389/fped.2020.618756] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 12/15/2020] [Indexed: 12/11/2022] Open
Abstract
Background: Bladder stones (BS) are rare in children. Minimally invasive surgery (MIS) seems to be nowadays the procedure of choice to treat pediatric patients with BS. This study aimed to analyze retrospectively our experience with percutaneous cystolithotomy, endourological treatment with Holmium laser and robotic cystolithotomy in children with BS. Methods: We retrospectively analyzed the data of 13 children (eight boys and five girls) with BS who were treated at our centers between July 2013 and July 2020. The patients received three different MIS procedures for stones removal: five underwent robotic cystolithotomy, five underwent endourological treatment and three received percutaneous cystolithotomy (PCCL). We preferentially adopted endourological approach for stones <10 mm, percutaneous approach between 2014 and 2016 and robotic approach since 2016 for larger stones. Results: Mean patients' age at the time of diagnosis was 13 years (range 5-18). Ten/13 patients (76.9%) had primary BS and 3/13 patients (23.1%) had secondary BS. Mean stone size was 18.8 mm (range 7-50). In all cases the stones were removed successfully. One Clavien II post-operative complication occurred following PCCL (33.3%). All the procedures were completed without conversions. Operative time ranged between 40 and 90 min (mean 66) with no significant difference between the three methods (p = 0.8). Indwelling bladder catheter duration was significantly longer after PCCL (mean 72 h) compared with robotic and endourological approaches (mean 15.6 h) (p = 0.001). Hospitalization was significantly longer after PCCL (mean 7.6 days) compared with the other two approaches (mean 4.7 days) (p = 0.001). The endourological approach was the most cost-effective method compared with the other two approaches (p = 0.001). Conclusions: Minimally invasive management of bladder stones in children was safe and effective. Endourological management was the most cost-effective method, allowing a shorter hospital stay compared with the other procedures but it was mainly indicated for smaller stones with a diameter < 10 mm. Based upon our preliminary results, robotic surgery seemed to be a feasible treatment option for BS larger than 15-20 mm. It allowed to remove the big stones without crushing them with a safe and easy closure of the bladder wall thanks to the easy suturing provided by the Robot technology.
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Affiliation(s)
- Ciro Esposito
- Pediatric Surgery Unit, Federico II University of Naples, Naples, Italy
| | - Giuseppe Autorino
- Pediatric Surgery Unit, Federico II University of Naples, Naples, Italy
| | - Lorenzo Masieri
- Pediatric Urology Unit, Meyer Children Hospital, Florence, Italy
| | | | - Fulvia Del Conte
- Pediatric Surgery Unit, Federico II University of Naples, Naples, Italy
| | - Vincenzo Coppola
- Pediatric Surgery Unit, Federico II University of Naples, Naples, Italy
| | - Mariapina Cerulo
- Pediatric Surgery Unit, Federico II University of Naples, Naples, Italy
| | - Felice Crocetto
- Urology Unit, Federico II University of Naples, Naples, Italy
| | - Maria Escolino
- Pediatric Surgery Unit, Federico II University of Naples, Naples, Italy
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18
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Sultan S, Aba Umer S, Ahmed B, Naqvi SAA, Rizvi SAH. Update on Surgical Management of Pediatric Urolithiasis. Front Pediatr 2019; 7:252. [PMID: 31334207 PMCID: PMC6616131 DOI: 10.3389/fped.2019.00252] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 06/03/2019] [Indexed: 12/15/2022] Open
Abstract
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.
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Affiliation(s)
- Sajid Sultan
- Philip G. Ransley Department of Paediatric Urology, Sindh Institute of Urology and Transplantation, Karachi, Pakistan
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19
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Chen DX, Hou YH, Jiang YN, Shao LW, Wang SJ, Wang XQ. Removal of pediatric stage IV neuroblastoma by robot-assisted laparoscopy: A case report and literature review. World J Clin Cases 2019; 7:1499-1507. [PMID: 31363479 PMCID: PMC6656671 DOI: 10.12998/wjcc.v7.i12.1499] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 04/29/2019] [Accepted: 05/11/2019] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Neuroblastoma (NB) is the most common extracranial solid tumor in children, with an incidence of approximately 1/10000. Surgical resection is an effective treatment for children with NB. Robot-assisted laparoscopic surgery is a new method and is superior to conventional laparoscopic surgery, since it has been preliminarily applied in clinical practice with a significant curative effect. This paper discusses significance and feasibility of complete resection of stage IV NB using robot-assisted laparoscopic surgery, while comparing its safety and effectiveness with conventional laparoscopic surgery.
CASE SUMMARY In June 2018, a girl with stage IV retroperitoneal NB, aged 3 years and 5 mo, was admitted. Her weight was 15 kg, and her height was 100 cm. Robot-assisted, five-port laparoscopic resection of NB was performed. Starting from the middle point between the navel and the anterior superior iliac spine to the left lower abdomen, the pneumoperitoneum and observation hole (10 mm) were established using the Hasson technique. Operation arm #1 was located between the left anterior axillary line, the navel, and the costal margin (8 mm); operation arm #2 was located at the intersection of the right anterior axillary line and Pfannenstiel line (8 mm); one auxiliary hole was located between arm #2 (on the Pfannenstiel line) and the observation hole (12 mm); and another auxiliary hole (5 mm) was located slightly below the left side of the xiphoid. Along the right line of Toldt and the hepatic flexure of the transverse colon, the colon was turned to the left and below with a hook electrode. Through Kocher's incision, the duodenum and the pancreatic head were turned to the left to expose the inferior vena cava and the abdominal aorta. The vein was separated along the right external iliac, and the inferior vena cava was then lifted to expose the right renal vein from the bottom to the top. The tumor was transected horizontally below the renal vein, and it was first cut into pieces and then resected. The right renal artery and the left renal vein were also exposed, and the retrohepatic inferior vena cava was isolated. The tumor was resected along the surface of the psoas muscle, the back of the inferior vena cava, and the right side of the abdominal aorta. Finally, the lymph node metas-tases in front of the abdominal aorta and left renal vein were completely removed. The specimens were loaded into a disposable specimen retrieval bag and removed from the enlarged auxiliary hole. T-tube drainage was placed and brought out through a hole in the right lower quadrant of the abdomen. The operative time was 389 min, the time of pneumoperitoneum was 360 min, the intraoperative blood loss was approximately 200 mL, and the postoperative recovery was smooth. There were no complications, such as lymphatic fistula, diarrhea, bleeding, and paralytic ileus. Two months after discharge, there were no other complications. The literature on the application of robot-assisted laparoscopic surgery in the treatment of NB in children was reviewed
CONCLUSION The robot has the advantages of a three-dimensional view and flexible operation, and it can operate finely along blood vessels. The successful experience of this case confirmed that robot-assisted laparoscopic surgery can skeletonize the abdominal blood vessels in the tumor and cut the tumor into pieces, indicating that robot-assisted laparoscopic surgery is feasible.
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Affiliation(s)
- Di-Xiang Chen
- Department of Pediatrics, PLA General Hospital, Beijing 100853, China
| | - Yi-Han Hou
- Beijing University of Chinese Medicine, Beijing 100029, China
| | - Ya-Nan Jiang
- Beijing University of Chinese Medicine, Beijing 100029, China
| | - Li-Wei Shao
- Department of Pathology, PLA General Hospital, Beijing 100853, China
| | - Shan-Jie Wang
- Department of Hepatobiliary Disease, Sixth People’s Hospital of Jinan Affiliated to Jining Medical School, Jinan 250200, Shandong Province, China
| | - Xian-Qiang Wang
- Department of Pediatrics, PLA General Hospital, Beijing 100853, China
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Moldes JM, de Badiola FI, Vagni RL, Mercado P, Tuchbaum V, Machado MG, López PJ. Pediatric Robotic Surgery in South America: Advantages and Difficulties in Program Implementation. Front Pediatr 2019; 7:94. [PMID: 30984719 PMCID: PMC6447650 DOI: 10.3389/fped.2019.00094] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 03/04/2019] [Indexed: 11/21/2022] Open
Abstract
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.
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Affiliation(s)
- Juan M Moldes
- Department Pediatric Surgery, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | | | - Roberto Luis Vagni
- Department Pediatric Surgery, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Pedro Mercado
- Department Pediatric Surgery, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Virginia Tuchbaum
- Department Pediatric Surgery, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Marcos G Machado
- Department of Urology, Faculdade de Medicina, Universidade de São Paulo, Hospital das Clínicas, São Paulo, Brazil
| | - Pedro José López
- Department Pediatric Urology, Hospital Exequiel Gonzalez Cortés y Clínica Alemana, Santiago, Chile
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