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Parente A, Ortiz R, Fernández-Bautista B, Burgos L, Angulo JM. Micro-Ureteroscopy as a Treatment of Renal Pelvis Lithiasis in Young Children. Front Pediatr 2021; 9:593743. [PMID: 34041205 PMCID: PMC8141860 DOI: 10.3389/fped.2021.593743] [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: 08/11/2020] [Accepted: 04/06/2021] [Indexed: 11/13/2022] Open
Abstract
Aim: Miniaturization of endoscopic instruments has allowed to improve the efficacy of kidney stone treatment in young children. Aim of the study is to evaluate the usefulness of microureteroscopy with 4.85F sheath in the treatment of renal stones in children. M&M: We present 4 cases of microureteroscopy in 3 younger than 3 years patients with renal pelvic stones. Lithiasis was unilateral in 2 female patients and bilateral in 1 male patient. Microureteroscopy was performed using a MicroPerc set 4.85F sheath, without placing a safety guide or dilating the meatus in 3 procedures. The lithotripter system used was Ho:YAG Laser with 200-μm fiber in all cases. Results: Mean operating time was 100 ± 16 min. There were no intraoperative complications. In all procedures, complete pulverization of the lithiasis was achieved, except in the coraliform lithiasis in which 5 mm residual lithiasis remained in the lower calyx. All patients were discharged 24 h after the intervention. Conclusion: Microureteroscopy can be considered a new alternative for treatment of selected cases of renal pelvic stones in infants and children.
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Affiliation(s)
| | - Ruben Ortiz
- Gregorio Marañón University Hospital, Madrid, Spain
| | | | - Laura Burgos
- Gregorio Marañón University Hospital, Madrid, Spain
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Halinski A, Steyaert H, Wojciech M, Sobolewski B, Haliński A. Endourology Methods in Pediatric Population for Kidney Stones Located in Lower Calyx: FlexURS vs. Micro PCNL (MicroPERC®). Front Pediatr 2021; 9:640995. [PMID: 34095024 PMCID: PMC8175969 DOI: 10.3389/fped.2021.640995] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 04/12/2021] [Indexed: 11/25/2022] Open
Abstract
Kidney stone disease in children is always a therapeutic challenge. It is a multifactorial condition and it should be approached, diagnosed and treated as such. One of the biggest challenges is kidney stones located in the lower renal calyx. There are currently three main surgical techniques to treat this condition: ESWL-Extracorporeal Shock Wave Lithotripsy, RIRS-Retrograde IntraRenal Surgery, and PCNL-PerCutaneous Nephro-Lithotripsy. In pediatric population, the most frequently used method is ESWL, and in the event of failure, endoscopic procedures are the second-best choice. In this article, a sample of 53 children admitted to a tertiary medical center was examined. Thirty-eight of those children underwent flexible URS, while the remaining 15-micro PCNL. The average size of the deposit in the former group was 12.2 mm, against 13.5 mm in the latter. The full Stone Free Rate (SFR) was achieved in RIRS at 84.21 and 86.7% in percutaneous nephrolithotripsy. Flexible ureterorenoscopy and MicroPERC are two comparably effective methods for treating lower calyx stones of any size. However, according to our data, flexible ureterorenoscopy carries a lower risk of complications and inpatient care (with the mean of 3 days). The learning curve for these procedures in pediatric urology is long and relies on a limited number of patients. The number of pediatric patients qualifying for these procedures is restricted also due to the high efficacy of extracorporeal shock wave lithotripsy in pediatric population. Radiation exposure is an important factor in every endoscopy procedure and should never exceed the limits set in the ALARA protocol. ESWL remains to this day the treatment of choice for stone disease in children and can be performed under ultrasound control. For many parents, it is a first-choice treatment preference for their child due to its greater apparent safety, although data on this remains insufficient. Prospective, randomized, multicenter trials are definitely needed.
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Affiliation(s)
- Adam Halinski
- Department of Pediatric Urology, Private Medical Center "Klinika Wisniowa", Zielona Góra, Poland.,Department of Clinical Genetics and Pathomorphology, Collegium Medicum, University of Zielona Góra, Zielona Góra, Poland
| | - Henri Steyaert
- Department of Pediatric Surgery, Queen Fabiola Children's University Hospital, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Magdalena Wojciech
- Department of Mathematical Statistics and Econometrics, Faculty of Mathematics, Computer Science and Econometrics, University of Zielona Góra, Zielona Góra, Poland
| | - Bartłomiej Sobolewski
- Department of Pediatric Urology, Private Medical Center "Klinika Wisniowa", Zielona Góra, Poland
| | - Andrzej Haliński
- Department of Pediatric Urology, Private Medical Center "Klinika Wisniowa", Zielona Góra, Poland
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Destro F, Selvaggio GGO, Lima M, Riccipetitoni G, Klersy C, Di Salvo N, Marinoni F, Calcaterra V, Pelizzo G. Minimally Invasive Approaches in Pediatric Urolithiasis. The Experience of Two Italian Centers of Pediatric Surgery. Front Pediatr 2020; 8:377. [PMID: 32793523 PMCID: PMC7393988 DOI: 10.3389/fped.2020.00377] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 06/04/2020] [Indexed: 12/23/2022] Open
Abstract
Background: Over the last 30 years, the incidence of pediatric urolithiasis (PU) has been increasing and the surgical management has evolved toward a minimally invasive approach (MIA). We reported the experience of two Centers of Pediatric Surgery in the management of PU, focusing on MIA as first choice in treatment. Methods: Data were retrospectively analyzed from October 2009 to October 2019 in children with urolithiasis who were admitted to two referral Italian Centers of Pediatric Surgery. Demographic and clinical data of the patients, features of the urolithiasis, type of surgery were considered. Results: Seventy patients (7.3 ± 5.0 years) with normal renal function were treated for calculi in the pyelocaliceal system (45.7%), ureter (34.3%), bladder (4.3%), urethra (1.4%), and multiple locations (14.3%). Size of calculi was >10 mm in 55.7% of cases (kidney>bladder/urethra>multiple>ureter, p = 0.01). Symptoms were present in 75.7% of patients. Family history was positive in 16.9% of cases. MIA was performed in 59 patients (84.3%): 11.8% shockwave lithotripsy (kidney>ureter>multiple); 32.2% ureteral retrograde surgery (ureteral>other localizations); 30.5% retrograde intrarenal surgery (kidney>other localizations); and 25.4% other procedures including percutaneous nephrolithotomy, cystoscopic bladder stone removal or laser cystolithotripsy (kidney>bladder>multiple). Preoperative stenting was necessary in 52.8% of cases. Four MIA procedures (6.9%, kidney>ureter/multiple) were converted to open surgery. Open surgery was required as first approach in 15.7% of patients (kidney>ureter>multiple) who needed urgent surgery or had associated congenital renal anomalies. In 18/70 of children (25.7%), with prevalence of stones in kidney and multiple location (p < 0.01), a second procedure completed the treatment (88.8% MIA). Intraoperative difficulties were recorded in 8.5% of cases, without difference between location and size of calculi. Late complications (5.7%) were related to displacement and infection of the ureteral stent. Conclusions: MIA resulted to be feasible in more than 75% of primary surgery and in more than 85% of cases requiring a second procedure. Preoperative stent was mandatory in more than 50% of children. The technological evolution allowed to overcome many of the technical difficulties related to the approach to the papilla and lower calyxes. Open surgery is reserved for selected cases and endoscopic surgery represents the best choice of treatment for PU.
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Affiliation(s)
- Francesca Destro
- Pediatric Surgery Unit, V. Buzzi Children's Hospital, Milan, Italy
| | | | - Mario Lima
- Pediatric Surgery Unit, S. Orsola Hospital, University of Bologna, Bologna, Italy
| | | | - Catherine Klersy
- Clinical Epidemiology & Biometry, IRCCS Policlinico San Matteo Foundation, Pavia, Italy
| | - Neil Di Salvo
- Pediatric Surgery Unit, S. Orsola Hospital, University of Bologna, Bologna, Italy
| | | | - Valeria Calcaterra
- Pediatric and Adolescent Unit, Department of Internal Medicine, University of Pavia, Pavia, Italy.,Pediatric Unit, V. Buzzi Children's Hospital, Milan, Italy
| | - Gloria Pelizzo
- Pediatric Surgery Unit, V. Buzzi Children's Hospital, Milan, Italy.,Department of Biomedical and Clinical Science L. Sacco, University of Milan, Milan, Italy
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"Microperc" micropercutaneous nephrolithotomy: a review of the literature. Urolithiasis 2017; 46:107-114. [PMID: 29218393 DOI: 10.1007/s00240-017-1021-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Accepted: 11/11/2017] [Indexed: 10/18/2022]
Abstract
Recent years have seen innovations in working armamentarium of percutaneous nephrolithotomy (PCNL) leading to development of novel modifications such as miniperc, ultra miniperc, and microperc. Amongst these microperc appears to be least invasive and various authors, off late, have reported their experience with the technique. Literature on microperc was reviewed by a MEDLINE/PubMed search with articles in the English language since 2011 in published peer-reviewed journals. Articles comprised of case series, comparative, and noncomparative studies. Different facets encompassing the technique were analyzed including contemporary indications, technique and its modifications, outcomes, and comparison with other modalities. Technique is reported to be associated with high success rate (82-100%) and short hospital stay (1-2 days). Studies have reported minimal hemoglobin drop (0.1-1.4 gm%) and fewer complications of lower Clavien grades. Going small in PCNL has gone a long way to present day 4.85F puncture system. Utilization of this novel modification is on rise with larger case series and comparative analysis being reported in past 2 years. Technique boasts of high clearance rate, lower morbidity and short hospital stay. In the present era, this innovation in percutaneous stone management appears to be another milestone in quest for "knife to cannula to needle to nothing".
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Caione P, Collura G, Innocenzi M, De Dominicis M, Gerocarni Nappo S, Capozza N. Percutaneous endoscopic treatment for urinary stones in pediatric patients: where we are now. Transl Pediatr 2016; 5:266-274. [PMID: 27867851 PMCID: PMC5107374 DOI: 10.21037/tp.2016.09.03] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 09/20/2016] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Percutaneous nephrolithotomy (PCNL) has been adopted for pyelo-calyceal stones treatment in pediatric patients, starting from the 90's. Very recently, miniaturization of endoscopic instruments allowed less invasive procedures with low complication rate. We reviewed our experience on upper tract stone treatment utilizing two different percutaneous accesses, focusing on the recent new miniaturized devices offered for pediatric renal stones. METHODS Patients presenting upper tract urinary stones observed from January 2011 to December 2015 and treated by percutaneous renal access were prospectively evaluated: age, sex, metabolic issues, associated abnormalities, treatment modalities, hospital stay and complication rate were recorded in a specific database. Two different endourological percutaneous modalities were adopted, depending to the stone size and position. PCNL was performed through a direct calyceal puncture under ultrasonographic and fluoroscopic guidance and Amplatz access dilatation till 24 Fr. Ballistic energy was used for fragmentation. Micropercutaneous (Microperc) procedure was recently offered utilizing a 4.85 Fr metallic needle and Holmium:YAG laser lithotripsy under direct vision through a 0.9 mm high resolution optic flexible wire connected with a telescope. RESULTS Thirty-eight percutaneous access to pyelo-calyceal renal stones were performed on a total of 108 children treated for upper tract stones, aged 4 to 18 years (mean age 7.5 years). The overall number of procedures was 144 (36 repeated procedures). Cystinuria was diagnosed in 5 patients. PCNL was adopted in 28 patients, Microperc was utilized in 8 patients. Hemoglobin dropdown was limited to 1.20±0.80 mg% in PCNL and was not significant in Microperc. No blood transfusion was needed. No significant complications were observed. Stone free rate or minimal not significant residuals were achieved in 82% of PCNL and in 87.5% of Microperc, after a single procedure. CONCLUSIONS Percutaneous endoscopic treatment of renal calculi is feasible in pediatric age, with high success rate in a single step. Advanced miniaturized endoscopic devices as Microperc guarantee high efficacy and reduced complication rate, but endo-urological experience and adequate learning curve are required, especially in small body weight children. Centralization of these patients in Pediatric Stone Centers is welcomed to optimize results and reduce risks.
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Affiliation(s)
- Paolo Caione
- Division of Pediatric Urology, “Bambino Gesù” Children’s Hospital, Rome, Italy
| | - Giuseppe Collura
- Division of Pediatric Urology, “Bambino Gesù” Children’s Hospital, Rome, Italy
| | - Michele Innocenzi
- Division of Pediatric Urology, “Bambino Gesù” Children’s Hospital, Rome, Italy
| | | | | | - Nicola Capozza
- Division of Pediatric Urology, “Bambino Gesù” Children’s Hospital, Rome, Italy
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Armagan A, Karatag T, Buldu I, Tosun M, Basibuyuk I, Istanbulluoglu MO, Tepeler A. Comparison of flexible ureterorenoscopy and micropercutaneous nephrolithotomy in the treatment for moderately size lower-pole stones. World J Urol 2015; 33:1827-31. [PMID: 25712308 DOI: 10.1007/s00345-015-1503-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Accepted: 01/29/2015] [Indexed: 11/26/2022] Open
Abstract
PURPOSE To present a retrospective comparative clinical study of micropercutaneous nephrolithotomy (microperc) versus flexible ureterorenoscopy (F-URS) in treatment of moderate-size lower-pole stones (LPSs). METHODS We retrospectively reviewed data on patients with isolated LPSs ≤2 cm in diameter treated with F-URS and/or microperc in two referral centers. Patients were divided into two groups by treatment modality: F-URS (Group 1) and microperc (Group 2). Demographics and perioperative parameters were analyzed. RESULTS A total of 127 patients with isolated LPSs were treated via F-URS (Group 1, n = 59) and microperc (Group 2, n = 68). Mean patient age in microperc group was slightly lower than in F-URS group (p = 0.112). We found no statistically significant difference in terms of either the size or number of stones in two groups (p = 0.113 and p = 0.209, respectively). Operative time was shorter in microperc, whereas fluoroscopy time was shorter in F-URS (60.1 ± 26.2 vs. 46.2 ± 24.3 min, p < 0.001; and 28.3 ± 19.1 vs. 108.9 ± 65.2 s, p < 0.001). Mean fall in hemoglobin level was statistically significantly lower in F-URS and hospitalization time was also significantly shorter in F-URS (0.68 ± 0.51 vs. 1.29 ± 0.88 mg/dL, p < 0.001; and 23.0 ± 58.1 vs. 33.8 ± 17.2 h, p < 0.001, respectively). Stone-free rates (SFRs) were 74.5 % (44/59) in Group 1 and 88.2 % (60/68) in Group 2 (p < 0.001). CONCLUSIONS We found that microperc was safe and efficacious when used to treat moderate-size LPSs and may be considered as an alternative to F-URS, affording a higher SFR. Our study supports the notion that microperc should play an increasing role in treatment of LPSs.
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Affiliation(s)
- Abdullah Armagan
- Department of Urology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, 34093, Turkey.
| | - Tuna Karatag
- Department of Urology, Faculty of Medicine, Mevlana University, Konya, Turkey
| | - Ibrahim Buldu
- Department of Urology, Faculty of Medicine, Mevlana University, Konya, Turkey
| | - Muhammed Tosun
- Department of Urology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, 34093, Turkey
| | - Ismail Basibuyuk
- Department of Urology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, 34093, Turkey
| | | | - Abdulkadir Tepeler
- Department of Urology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, 34093, Turkey
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