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Oktar T, Selvi I, Dönmez Mİ, Alan Y, Değirmenci E, Ziylan O. What to Expect on the Long-term Follow-up of Pediatric Pyeloplasty: Critical Time Intervals and Risk Factors. J Pediatr Surg 2024; 59:1170-1176. [PMID: 38158254 DOI: 10.1016/j.jpedsurg.2023.11.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 11/19/2023] [Accepted: 11/22/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND Standard protocol for post-pyeloplasty monitoring in children and natural course of hydronephrosis resolution have not been well defined. We aimed to analyze critical time intervals and risk factors in the long-term clinical outcomes of children who were operated for ureteropelvic junction obstruction. METHODS Files of patients who underwent open dismembered pyeloplasty between January 2000 and December 2012 and had a ≥10 years follow-up were retrospectively reviewed. Changes in SFU hydronephrosis grade, pelvis anteroposterior diameter (APD), renal parenchymal thickness, split renal functions (SRF) on MAG-3 scan as well as development of hypertension and proteinuria were noted. Complete resolution was defined as SFU grade 0-1 or APD≤10 mm or ≥50 % APD decrease. RESULTS Overall, 223 patients (161 boys, 72.1 %) with a median age of 9 (range 1-185) months underwent unilateral pyeloplasty, whereas 14 patients (13 boys, 92.8 %) with a median age of 4 (range 2-39) months underwent bilateral pyeloplasty. Median follow-up was 13 (range 10-22) years. Complete resolution was observed in 190 patients (85.2 %). None of the cases required re-do pyeloplasty. Regarding unilateral cases, postoperative changes in hydronephrosis reached a plateau at the 60th month. Also, there was no significant difference regarding SRF between the 12th month and the 60th month (p > 0.05). Hypertension developed after a median period of 12 years in 13 (5.4 %) of the patients, while proteinuria developed in four (1.6 %) patients. Bilateral disease (HR: 2.518, p = 0.034) was found to be a significant determinant for development of hypertension and/or proteinuria. CONCLUSIONS Our results indicated that ultrasonographic findings stabilized after the 60th month postoperatively, and SRF remained stable between the postoperative 12th and the 60th months. The risk of developing hypertension and/or proteinuria was 2.5 times greater in bilateral cases. LEVEL OF EVIDENCE Level II.
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Affiliation(s)
- Tayfun Oktar
- İstanbul University, İstanbul Faculty of Medicine, Department of Urology, Division of Pediatric Urology, Istanbul, Turkey; Koç University, School of Medicine, Department of Urology, Istanbul, Turkey.
| | - Ismail Selvi
- İstanbul University, İstanbul Faculty of Medicine, Department of Urology, Division of Pediatric Urology, Istanbul, Turkey
| | - M İrfan Dönmez
- İstanbul University, İstanbul Faculty of Medicine, Department of Urology, Division of Pediatric Urology, Istanbul, Turkey
| | - Yaren Alan
- İstanbul University, İstanbul Faculty of Medicine, Department of Urology, Division of Pediatric Urology, Istanbul, Turkey
| | - Enes Değirmenci
- İstanbul University, İstanbul Faculty of Medicine, Department of Urology, Division of Pediatric Urology, Istanbul, Turkey
| | - Orhan Ziylan
- İstanbul University, İstanbul Faculty of Medicine, Department of Urology, Division of Pediatric Urology, Istanbul, Turkey
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Menon P, Yhoshu E, Lakshmi K, Rao N, Bhattacharya A. Outcome analysis of reduction and nonreduction dismembered pyeloplasty in ureteropelvic junction obstruction: A randomized, prospective, comparative study. J Indian Assoc Pediatr Surg 2022; 27:25-31. [PMID: 35261510 PMCID: PMC8853589 DOI: 10.4103/jiaps.jiaps_229_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 08/02/2020] [Accepted: 11/27/2020] [Indexed: 11/04/2022] Open
Abstract
Objectives: Materials and Methods: Results: Conclusion:
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Elbaset MA, Ezzat O, Elgamal M, Sharaf MA, Elmeniar AM, Abdelhamid A, Osman Y. Supranormal differential renal function in adults with ureteropelvic junction obstruction: Does it really exist? Indian J Urol 2020; 36:205-211. [PMID: 33082636 PMCID: PMC7531368 DOI: 10.4103/iju.iju_109_20] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 05/10/2020] [Accepted: 06/05/2020] [Indexed: 11/04/2022] Open
Abstract
Introduction Some patients with ureteropelvic junction obstruction (UPJO) have supranormal differential renal function (snDRF). We aimed to study the outcomes of pyeloplasty in adult patients with UPJO and either snDRF or normal differential renal function (nDRF) and to identify preoperative factors responsible for the snDRF phenomenon. Materials and Methods We retrospectively retrieved data for all patients who underwent pyeloplasty and had snDRF (differential renal function [DRF] ≥55%) and nDRF (DRF between 45 and 55%) preoperatively. Preoperative radiological data using computed tomography or magnetic resonance imaging were correlated with the presence of snDRF phenomenon. In addition, scintigraphic findings pre- and post-operatively were also assessed to evaluate the functional outcomes. Results Of a total of 856 patients, 31 had snDRF (group 1) and 42 had nDRF (group 2). After a mean of 37 months' follow-up in Group 1, 22 patients developed DRF reduction with non-obstructive pattern. Mean DRF % decreased from 59 ± 2.8 to 48 ± 13 (P < 0.0001). However, in Group 2, five patients had DRF decrease. Four patients developed snDRF phenomenon postoperatively. Increased renal pelvis volume ≥50 mm3 and increased anteroposterior pelvic diameter (APD) ≥37 mm were found to predict snDRF phenomenon. The same findings, in addition to preoperative snDRF, correlated with postoperative DRF decrease. Conclusion SnDRF function could be expected in patients with increased renal pelvis volume and APD. The absolute value or changes in DRF are not reliable to judge treatment failure.
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Affiliation(s)
- M A Elbaset
- Department Urology, Urology and Nephrology Center, Mansoura University, Mansoura, Egypt
| | - Osama Ezzat
- Department Urology, Urology and Nephrology Center, Mansoura University, Mansoura, Egypt
| | - Mostafa Elgamal
- Department Urology, Urology and Nephrology Center, Mansoura University, Mansoura, Egypt
| | - M A Sharaf
- Department Urology, Urology and Nephrology Center, Mansoura University, Mansoura, Egypt
| | - A M Elmeniar
- Department Urology, Urology and Nephrology Center, Mansoura University, Mansoura, Egypt
| | - Abdalla Abdelhamid
- Department Radiology, Urology and Nephrology Center, Mansoura University, Mansoura, Egypt
| | - Yasser Osman
- Department Urology, Urology and Nephrology Center, Mansoura University, Mansoura, Egypt
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Gopal M, Peycelon M, Caldamone A, Chrzan R, El-Ghoneimi A, Olsen H, Leclair MD, Stillebroer A, MacDonald C, Tonnhofer U, Strasser C, Adam A, Spinoit AF, Haid B. Management of ureteropelvic junction obstruction in children-a roundtable discussion. J Pediatr Urol 2019; 15:322-329. [PMID: 31227314 DOI: 10.1016/j.jpurol.2019.05.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 05/08/2019] [Indexed: 12/13/2022]
Abstract
The investigation, management and follow-up of paediatric ureteropelvic junction obstruction is not standardized. The Young Pediatric Urology Committee of the European Society of Pediatric Urology interviewed five experts in the field on various aspects of management and compared this with published literature.
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Affiliation(s)
- M Gopal
- Department of Paediatric Surgery, Great North Children's Hospital, Newcastle Upon Tyne, UK.
| | - M Peycelon
- Robert-Debré University Hospital (Assistance-Publique Hôpitaux de Paris), Department of Pediatric Surgery and Urology, Reference Center for Rare Diseases (CRMR), Malformations Rares des Voies Urinaires (MARVU), Université Paris Diderot, Sorbonne Paris CitéParis, France; Riley Hospital for Children, Indiana University and Purdue University in Indiana, Indianapolis, IN, USA
| | - A Caldamone
- Division of Pediatric Urology, Hasbro Children's Hospital, Warren Alpert School of Medicine at Brown University, Providence Rhode Island, USA
| | - R Chrzan
- Department of Paediatric Urology, Jagiellonian University Medical College, Krakow, Poland
| | - A El-Ghoneimi
- Robert-Debré University Hospital (Assistance-Publique Hôpitaux de Paris), Department of Pediatric Surgery and Urology, Reference Center for Rare Diseases (CRMR), Malformations Rares des Voies Urinaires (MARVU), Université Paris Diderot, Sorbonne Paris CitéParis, France
| | - H Olsen
- Department of Urology, Aarhus University Hospital, Arhus, Denmark
| | - M-D Leclair
- Department of Paediatric Surgery, Children University Hospital, NANTES, France
| | - A Stillebroer
- Department of Urology, University Medical Centre Groningen, Groningen, the Netherlands
| | - C MacDonald
- Department of Paediatric Surgery, Royal Hospital for Children, Glasgow, UK
| | - U Tonnhofer
- Department of Pediatric Surgery, Medical University Vienna, Austria
| | - C Strasser
- Department of Pediatric Urology, Hospital of the Sisters of Charity, Linz, Austria
| | - A Adam
- The Division of Urology, School of Clinical Medicine, University of the Witwatersrand, Johannesburg, South Africa
| | - A-F Spinoit
- Department of Urology, Ghent University Hospital, Ghent, Belgium
| | - B Haid
- Department of Pediatric Urology, Hospital of the Sisters of Charity, Linz, Austria
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Chandrasekharam VVS. Comment on: Kumar et al. Follow-up imaging after pediatric pyeloplasty. Indian J Urol, 2016;32:221-226. Indian J Urol 2016; 32:227-8. [PMID: 27555682 PMCID: PMC4970395 DOI: 10.4103/0970-1591.185094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- V V S Chandrasekharam
- Department of Pediatric Surgery, Pediatric Urology and MAS, Rainbow Children's Hospitals, Hyderabad, Telangana, India
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Rickard M, Braga LH, Oliveria JP, Romao R, Demaria J, Lorenzo AJ. Percent improvement in renal pelvis antero-posterior diameter (PI-APD): Prospective validation and further exploration of cut-off values that predict success after pediatric pyeloplasty supporting safe monitoring with ultrasound alone. J Pediatr Urol 2016; 12:228.e1-6. [PMID: 27448846 DOI: 10.1016/j.jpurol.2016.04.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Accepted: 04/29/2016] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Renograms are frequently obtained post-pyeloplasty in patients with residual hydronephrosis to confirm adequate drainage. Recent evidence suggests that percent improvement in antero-posterior diameter (PI-APD) ≥38 is predictive of success. We sought to further explore PI-APD ranges that would allow identification of patients who would benefit from ultrasound (US) monitoring alone vs. post-operative renal scan, and those more likely to develop recurrent ureteropelvic junction obstruction (rUPJO). METHODS A single-center prospectively-collected pyeloplasty database (2008-2015) was queried (n = 151). Only patients with both pre- and post-operative APD measurements were included (n = 138). PI-APD was divided into 3 categories: <20%; 20-39%; ≥40%. The following variables were collected post-operatively: patients monitored with US alone, renogram and US, rUPJO and minimal or resolved hydronephrosis (SFU ≤2; UTD ≤1; APD ≤15 mm). RESULTS Mean age at first and last follow-up were 4.8 (median 4.0; range 0-60) months and 26.6 (median 20.5; range 1-77) months, respectively. Of 138 patients, 84 (61%) had US alone, 54 (39%) had a renogram and US post-operatively, and 6 (4%) developed rUPJO. Of 84 patients who had US alone, 71 (84%; p < 0.01) demonstrated ≥40% PI-APD. Of 54 patients with renogram and US 46 (85%; p < 0.01) had ≥40 PI-APD. Of the 6 patients who developed rUPJO, all were in the <20 PI-APD group (100%; p < 0.01). Resolution of hydronephrosis according to SFU, UTD and APD occurred in 96/138 (70%), 89/138 (64%) and 113/138 (82%) patients respectively. Of these, 87 (91%), 81 (91%), and 108 (95%) occurred in >40% PI-APD group. CONCLUSION ≥40% PI-APD at the first post-operative visit strongly predicts pyeloplasty success, as up to 82% of these patients showed resolved hydronephrosis and 61% underwent non-invasive monitoring by US alone. Our data suggests that up to 85% of renograms may have been unnecessary. Finally, <20% PI-APD permitted identification of all rUPJO cases. Stratification of patients based in PI-APD is a promising strategy for further minimizing radiation exposure while safely detecting children at risk for rUPJO.
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Affiliation(s)
- M Rickard
- McMaster Children's Hospital, 1200 Main Street West, Hamilton, ON L8N 3Z5, Canada
| | - L H Braga
- McMaster Children's Hospital, 1200 Main Street West, Hamilton, ON L8N 3Z5, Canada; McMaster University, Division of Urology, Department of Surgery, 1200 Main Street West, Hamilton, ON L8N 3Z5, Canada; McMaster Pediatric Surgery Research Collaborative, 1200 Main Street West, Hamilton, ON L8N 3Z5, Canada.
| | - J-P Oliveria
- McMaster University, Division of Urology, Department of Surgery, 1200 Main Street West, Hamilton, ON L8N 3Z5, Canada
| | - R Romao
- Dalhousie University, 6299 South Street, Halifax, Nova Scotia B3H 4R2, Canada
| | - J Demaria
- McMaster Children's Hospital, 1200 Main Street West, Hamilton, ON L8N 3Z5, Canada; McMaster University, Division of Urology, Department of Surgery, 1200 Main Street West, Hamilton, ON L8N 3Z5, Canada
| | - A J Lorenzo
- The Hospital for Sick Children, Division of Urology, 555 University Ave, Toronto, ON M5G 1X8, Canada
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Comparative Outcome Analysis of Children Who Underwent Pyeloplasty for Ureteropelvic Junction Obstruction Associated With or Without Supranormal Differential Renal Function. Urology 2016; 99:210-214. [PMID: 27450350 DOI: 10.1016/j.urology.2016.07.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 07/13/2016] [Accepted: 07/15/2016] [Indexed: 11/21/2022]
Abstract
OBJECTIVE To compare pyeloplasty outcomes in children with and without "supra-normal" differential renal function (SNDRF) defined as >55% differential renal function (DRF) in children with ureteropelvic junction obstruction. METHODS Our prospectively collected pyeloplasty database (2008-2015) was reviewed (n = 151). A total of 140/151 (93%) patients had preoperative renograms and 26/140 (19%) were found to have SNDRF (DRF ≥ 55%). Of 151 patients, 51 (34%) had pre- and postoperative renograms allowing determination of change ≥5% in function. After excluding 2 patients with solitary kidneys, a total of 49 patients defined the study group. RESULTS Of 49 patients, 12 had SNDRF and 37 did not. Baseline characteristics were similar including mean age at surgery (47.3 months vs 45.4 months) and time to surgery (8.7 months vs 9.8 months). Mean preoperative anteroposterior diameter was significantly different between groups (23.2 mm vs 31.0 mm; P = .04), but postoperative was similar (9.0 mm vs 12.1 mm; P = .14). Mean preoperative DRF was 60.2% in the SNDRF group vs 44.3% in the non-SNDRF. Mean postoperative DRF was 52.4% and 45.3%, respectively (P = .04). There were 9/12 (75%) SNDRF patients who experienced ≥5% loss in function compared to 2/37 (5%) in the non-SNDRF group (P < .01). CONCLUSION Three-quarters of SNDRF patients demonstrated a decline of ≥5%DRF postoperatively when compared to non-SNDRF. This finding may not reflect true elevated renal function, but rather hyperfiltration in the setting of obstruction, which-if unrecognized as such-could result in postponing an otherwise beneficial surgical intervention.
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Changes in Differential Renal Function after Pyeloplasty in Children. J Urol 2013; 190:1468-73. [DOI: 10.1016/j.juro.2013.01.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/02/2013] [Indexed: 11/19/2022]
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Adherence of Randomized Trials Within Children's Surgical Specialties Published During 2000 to 2009 to Standard Reporting Guidelines. J Am Coll Surg 2013; 217:394-399.e7. [DOI: 10.1016/j.jamcollsurg.2013.03.032] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 03/02/2013] [Accepted: 03/05/2013] [Indexed: 02/07/2023]
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Morsi HA, Mursi K, Abdelaziz AY, Elsheemy MS, Salah M, Eissa MA. Renal pelvis reduction during dismembered pyeloplasty: is it necessary? J Pediatr Urol 2013; 9:303-6. [PMID: 22459589 DOI: 10.1016/j.jpurol.2012.03.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2011] [Accepted: 03/01/2012] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To compare treatment results in patients who underwent pyeloplasty with and without pelvic reduction for ureteropelvic junction obstruction (UPJO). METHODS This randomized prospective study involved 40 patients, all diagnosed with unilateral UPJO; 20 each were randomly selected to undergo open dismembered pyeloplasty with pelvic reduction (group A) or pelvis-sparing pyeloplasty (group B). Patients were evaluated with ultrasound and DPTA renography scans 6 months postoperatively. Mean follow-up was 9 months. RESULTS The mean age in group B was 5.71 ± 6.36 years; in group A it was 4.81 ± 6.78 years. There was a decrease in mean anteroposterior renal pelvic diameter (from 49.9 to 26.35 ± 0.949 mm in A and 50.9 to 30.8 ± 1.556 mm in B) with improvement of split renal function (from 39 ± 22.47% to 42.4 ± 22.13% in A and 34.92 ± 16.79% to 38.8 ± 19.66% in B), glomerular filtration rate (from 37.25 ± 15.33 to 41.7 ± 19.34 ml/min in A and 31.3 ± 18.50 to 38.1 ± 23.23 ml/min in B) and draining curves on the 6-month scans, but without any significant difference between groups (p > 0.05). Two cases in group A and three in group B needed redo pyeloplasty, but without any significant difference in failure rate. CONCLUSION Excision of the pelvis is not necessary in dismembered pyeloplasty procedures. We had similar surgical outcomes for patients with or without pelvis reduction.
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Affiliation(s)
- Hany A Morsi
- Department of Urology, New Kasr Al-Ainy Teaching Hospital, Cairo University, Cairo, Egypt
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Chung HW, Lim JB, Jang S, Lee KJ, Park KH, Song SY. Serum high mobility group box-1 is a powerful diagnostic and prognostic biomarker for pancreatic ductal adenocarcinoma. Cancer Sci 2012; 103:1714-21. [PMID: 22703527 PMCID: PMC7659219 DOI: 10.1111/j.1349-7006.2012.02358.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Revised: 06/04/2012] [Accepted: 06/06/2012] [Indexed: 12/13/2022] Open
Abstract
Extracellular high mobility group box-1 (HMGB1) contributes to tumor growth and invasiveness. We evaluated the diagnostic and prognostic ability of serum HMGB1 for pancreatic ductal adenocarcinoma (PDAC). Serum HMGB1 measured by enzyme-linked immunosorbent assay (ELISA) were compared among normal, chronic pancreatitis, PDAC group in both training (n = 25, each group) and independent validation set (n = 45, each group). To determine the usability of serum HMGB1 as a diagnostic predictor of PDAC, receiver operating characteristic (ROC) curves with sensitivity/specificity and logistic regression were evaluated. To assess the HMGB1-associated prognosis of PDAC, Kaplan-Meier survival and Cox proportional-hazards regression were applied. Serum HMGB1 was correlated with presence and advanced-stage of PDAC. Logistic regression exhibited serum HMGB1 was a remarkable biomarker to predict PDAC as a single or multiple-markers; sensitivity/specificity of serum HMGB1 were superior to carbohydrate antigen (CA) 19-9 or carcinoembryonic antigen (CEA) in both training and independent datasets. Kaplan-Meier survival analysis showed PDAC patients with high serum HMGB1 levels (>30 ng/mL; median survival, 192 days) had a worse prognosis than patients with low HMGB1 levels (≤30 ng/mL; 514 days) by log-rank (P = 0.017). Cox proportional-hazards model showed the relative hazard ratios in high-serum HMGB1 group was 3.077 compared with the low-serum HMGB1 group. In conclusion, serum HMGB1 is a desirable diagnostic and prognostic biomarker for PDAC compared with pre-existing PDAC biomarkers, CA19-9 and CEA.
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Affiliation(s)
- Hye Won Chung
- Division of Gastroenterology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
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Kajbafzadeh AM, Tourchi A, Nezami BG, Khakpour M, Mousavian AA, Talab SS. Miniature pyeloplasty as a minimally invasive surgery with less than 1 day admission in infants. J Pediatr Urol 2011; 7:283-8. [PMID: 21527237 DOI: 10.1016/j.jpurol.2011.02.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE Open dismembered pyeloplasty is usually performed through flank, anterior subcostal or posterior lumbotomy incisions. These incisions are cosmetically less acceptable and may produce significant postoperative pain. We present the smallest incision for open pyeloplasty, called a 'miniature pyeloplasty'. The aim of this study was to reduce hospital stay and postoperative pain, along with enhanced cosmetic results. PATIENTS AND METHOD 373 infants (mean age 4 months) with hugely dilated pelvises underwent the miniature pyeloplasty. The exact site of incision was determined by intraoperative renal ultrasonography and palpation. A muscle-splitting incision was made in the most dependent part of the lower quadrant. After meticulous dissection of the ureteropelvic junction component, the affected section was pulled out and underwent classic dismembered pyeloplasty without renal pelvis reduction. All children had long-duration stented anastomoses. Surgical incision size, operative time, hospital stay, postoperative analgesic use and complication rate were recorded. RESULTS The operation was successful in all patients. The mean operative time was 53 min (range 43-75) and patients were discharged after 18 ± 3 (mean ± SD) h. Incision size ranged from 11 to 15 mm (mean 13). No narcotic analgesic was required postoperatively and there were no major complications during follow up. CONCLUSIONS Miniature pyeloplasty is a safe and successful technique for ureteropelvic junction obstruction that avoids long operative time with negligible postoperative pain compared to the classic open pyeloplasty in infants. The exact incision site must be reconfirmed intraoperatively by physical examination or renal ultrasonography.
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Affiliation(s)
- Abdol-Mohammad Kajbafzadeh
- Pediatric Urology Research Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran.
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