Search

OBJECTIVES To determine the effect of pyeloplasty on renal cortical thickness in the pediatric population with ureteropelvic junction obstruction (UPJO). METHODOLOGY This retrospective study examined the renal cortical thickness in 100 pediatric patients diagnosed with ureteropelvic junction obstruction (UPJO). The study employed a non-probability consecutive sampling technique to select participants. Inclusion criteria encompassed children below five years of age, of both genders, with Pakistani nationality, and availability of both pre-and post-operative ultrasound data. Cases presenting with ureterovesical junction obstruction or vesicoureteral reflux were excluded from the analysis. Data collection involved gathering information on age, gender, and cortical thickness, with renal cortical thickness assessed through ultrasonography. A paired t-test was employed to compare the renal cortical thickness between the preoperative assessment and the 3-month follow-up. RESULTSThe females were 40(40%) and males were 60(60%). The mean age was 33.51±22.91months. The mean cortical thickness before pyeloplasty was 5.23±0.93mm and 8.25 ± 2.34mm after pyeloplasty. The renal cortical thickness in both genders significantly increased to 3mm (p<0.001). The cortical thickness before pyeloplasty was 5.23±0.93mm, and after was 8.25±2.34mm. CONCLUSION Renal cortical thickness can be improved after pyeloplasty in patients with ureteropelvic junction obstruction.

Background: The aim of this study is to compare the results of laparoscopic pyeloplasty and robot-assisted laparoscopic pyeloplasty in patients with ureteropelvic junction obstruction. Methods: Between March 2008 and May 2019, the patients who underwent retroperitoneal laparoscopic or robotic-assisted laparoscopic pyeloplasty in our institution were retrospectively reviewed. Results: Thirteen patients underwent laparoscopically, and 12 patients underwent robotic surgery. The significant difference was found in median operative time between laparoscopic group (296 minutes) and robotic group (199 minutes) (P = 0.001). The median time for drain removal in laparoscopic group was longer than robotic group (3 vs. 2 days, respectively, P = 0.029). Conclusion: Laparoscopic and robot-assisted laparoscopic pyeloplasty is safe and excellent success rates in patients with ureteropelvic junction obstruction. However, our experience study suggested that robotic surgery improves a total operative time, decreases drain removal time and less intraoperative blood loss than laparoscopic approach.

Background: The aim of this study is to compare the results of laparoscopic pyeloplasty and robot-assisted laparoscopic pyeloplasty in patients with ureteropelvic junction obstruction. Methods: Between March 2008 and May 2019, the patients who underwent retroperitoneal laparoscopic or robotic-assisted laparoscopic pyeloplasty in our institution were retrospectively reviewed. Results: Thirteen patients underwent laparoscopically, and 12 patients underwent robotic surgery. The significant difference was found in median operative time between laparoscopic group (296 minutes) and robotic group (199 minutes) (P = 0.001). The median time for drain removal in laparoscopic group was longer than robotic group (3 vs. 2 days, respectively, P = 0.029). Conclusion: Laparoscopic and robot-assisted laparoscopic pyeloplasty is safe and excellent success rates in patients with ureteropelvic junction obstruction. However, our experience study suggested that robotic surgery improves a total operative time, decreases drain removal time and less intraoperative blood loss than laparoscopic approach., identifier:https://doi.org/10.33160/yam.2022.05.002

Objective Renal disorders can cause hypertension, but less is known about the influence of hydronephrosis on blood pressure. Hydronephrosis due to pelvo-ureteric junction obstruction (PUJO) is a fairly common condition (incidence in newborns of 0.5-1%). Although hypertensive effects of hydronephrosis have been suggested, this has not been substantiated by prospective studies in humans [1-3]. Experimental studies with PUJO have shown that animals with induced hydronephrosis develop salt-sensitive hypertension, which strongly correlate to the degree of obstruction [4-7]. Moreover, relief of the obstruction normalized blood pressure [8]. In this first prospective study our aim was to study the blood pressure pattern in pediatric patients with hydronephrosis before and after surgical correction of the ureteral obstruction. Specifically, we investigated if preoperative blood pressure is reduced after surgery and if split renal function and renographic excretion curves provide any prognostic information. Patients and methods Twelve patients with unilateral congenital hydronephrosis were included in this prospective study. Ambulatory blood pressure (24 h) was measured preoperatively and six months after surgery. Preoperative evaluations of bilateral renal function by Tc99m-MAG3 scintigraphy, and renography curves, classified according to O'Reilly, were also performed. Results As shown in the summary figure, postoperative systolic (103 +/- 2 mmHg) and diastolic (62 +/- 2 mmHg) blood pressure were significantly lower than those obtained preoperatively (110 +/- 4 and 69 +/- 2 mmHg, respectively), whereas no changes in circadian variation or pulse pressure were observed. Renal functional share of the hydronephrotic kidney ranged from 11 to 55%. There was no correlation between the degree of renal function impairment and the preoperative excretory pattern, or between the preoperative excretory pattern and the blood pressure reduction postoperatively. However, preoperative MAG3

The treatment of symptomatic uretropelvic junction obstruction (UPJO) has evolved towards minimal invasive endourologic and laparoscopic techniques. Robotic assisted laparoscopic pyeloplasty has achieved outcomes comparable to those corresponding to open and laparoscopic techniques. The objective of this work is to demonstrate that the transition between open to robotic surgeries is straightforward. We analysed retrospectively "our initial results" in robotic assisted UPJ reconstruction procedures. Technical and convalescence aspects for 17 reconstructive robotic procedures performed by 2 surgeons in a 5 years period have been evaluated. Success consisted of no postoperative symptoms, no evidence of obstruction on mercaptoacetyltriglycine-3 diuretic renal scan or computed tomography (CT) and non-further treatment.

Objetivo: Describir los factores relacionados con la toma de decisión de manejo quirúrgico en pacientes con hidronefrosis secundaria a estrechez de la unión pieloureteral en el servicio de Urología Pediátrica de una institución de IV nivel. Materiales y Métodos: Se realizó un estudio descriptivo retrospectivo. Se seleccionaron por conveniencia a 100 pacientes con diagnóstico antenatal de hidronefrosis, 37 fueron llevados a manejo quirúrgico por estrechez de la unión pieloureteral (EUPU) entre los años 2009 y 2012. Se evaluaron los factores que llevaron a la toma| de esta decisión. Resultados: Los pacientes con diagnóstico postnatal de EUPU representaron el 37% de la población, la indicación de manejo quirúrgico en 13 pacientes (35,1%) fue dilatación caliceal (SFU 3), en 21 pacientes (56,8%) de deterioro de la función renal y en los restantes (8,1%) infección urinaria recurrente. Se encontró una progresión de 30% en la severidad de la dilatación en el periodo postnatal, habían 9 pacientes (24% de la muestra) SFU de 3 y 4 en el periodo prenatal y 20 (54%) en el periodo postnatal que fueron llevados a manejo quirúrgico. De los pacientes que disponíamos de datos precisos de valores de variación porcentual de gammagrafía 16% de la muestra, se encontró que había una variación del 50% en deterioro de la función renal. Conclusión: En el grupo de pacientes colombianos de la consulta externa del servicio de urología pediátrica estudiado se encontró que la decisión de manejo quirúrgico en pacientes con EUPU, está en concordancia con lo encontrado en la literatura mundial, siendo estos la presencia de dilatación caliceal deterioro de la función renal en gammagrafía DMSA., Objective: Describe factors related to decision making of surgical management in patients with hydronephrosis secondary to ureteropelvic junction obstruction (UPJO) in a Pediatric Urology Institution. Materials and Methods: A retrospective descriptive study was conducted. 100 patients were selected for convenience with antenatal diagnosis of hydronephrosis, 37 received surgical management for UPJO between 3 years. The factors that led to the decision were evaluated. Results: Patients diagnosed with postnatal UPJO accounted for 37 % of the population, the indication of surgical treatment in 13 patients ( 35.1 %) was calyceal dilatation ( SFU 3), in 21 patients (56.8% ) was impairment renal function, and in the remaining (8.1% ) recurrent urinary tract infection. A progression of 30 % in the severity of dilatation in the postnatal period was found. Of the patients that we had accurate data values ​​scintigraphy percentage change 16% of the sample was found to have a variation of 50 % in impaired renal function. Conclusion: In the group of Colombian patients from the outpatient department of pediatric urology studied it was found that the decision of surgical management in patients with UPJO, is consistent with findings in the literature, these being the presence of dilated calyceal and impairment of renal function in DMSA scintigraphy

Purpose: The main criteria used for deciding on surgery in children with presumed antenatally detected pelviureteric junction obstruction (PPUJO) are the level of hydronephrosis (ultrasonography), the level of differential renal function (DRF) and the quality of renal drainage after a furosemide challenge (renography), the importance of each factor being far from generally agreed. Can we predict, on the basis of ultrasound parameters, the patient in whom radionuclide renography can be avoided? Methods: We retrospectively analysed the medical charts of 81 consecutive children with presumed unilateral PPUJO detected antenatally. Ultrasound and renographic studies performed at the same time were compared. Anteroposterior pelvic diameter (APD) and calyceal size were both divided into three levels of dilatation. Parenchymal thickness was considered either normal or significantly decreased. Acquisition of renograms under furosemide stimulation provided quantification of DRF, quality of renal drainage and cortical transit. Results: The percentages of patients with low DRF and poor drainage were significantly higher among those with major hydronephrosis, severe calyceal dilatation or parenchymal thinning. Moreover, impaired cortical transit, which is a major risk factor for functional decline, was seen more frequently among those with very severe calyceal dilatation. However, none of the structural parameters obtained by ultrasound examination was able to predict whether the level of renal function or the quality of drainage was normal or abnormal. Alternatively, an APD <30 mm, a calyceal dilatation of <10 mm and a normal parenchymal thickness were associated with a low probability of decreased renal function or poor renal drainage. Conclusion: In the management strategy of patients with prenatally detected PPUJO, nuclear medicine examinations may be postponed in those with an APD <30 mm, a calyceal dilatation of <10 mm and a normal parenchymal thickness. On the contrary, p, SCOPUS: ar.j, info:eu-repo/semantics/published

ObjectivesWe review the various applications of laparoscopic and robotic-assisted laparoscopy in paediatric urology, as the laparoscopic and robotic approach in this population is gradually being recognised.MethodsWe searched PubMed for human studies in English that were published between 1990 and the present, focusing on laparoscopic nephrectomies and partial nephrectomies, laparoscopic and robotic pyeloplasties and ureteric reimplantation, laparoscopic orchidopexy and varicocelectomy. We also reviewed robotic-assisted laparoscopic urological major reconstructions. Key articles were reviewed, extracting the indications, techniques, and the advantages and disadvantages.Results and conclusionsLaparoscopy has a defined place in modern paediatric urological surgery. Laparoscopic nephrectomies, pyeloplasties and abdominal exploration for the evaluation and management of impalpable undescended testicles have become the standard of care. Robotic-assisted laparoscopic surgery is developing as a safe and effective option even for infant patients.

The advent of totally internal ureteric stents has the potential to reduce hospital stay in paediatric pyeloplasty. Traditionally, discharge from hospital has followed removal of an external transanastomotic drain, usually 5 days to a week post-operatively. The use of totally internal catheters negates the need for nursing supervision by removing external attachments that a paediatric patient might inadvertently dislodge. The length of hospital stay for pyeloplasty using a Double-J ureteric stent was compared with our previous method of transanastomotic feeding tube nephrostomy drainage. The results show the use of Double-J stenting to be advantageous in paediatric pyeloplasty by decreasing considerably the length of hospital stay. This is clearly of benefit to the patient, who returns to the family setting much earlier. Despite the need for an outpatient endoscopic procedure to remove the stent, savings in treatment costs and improved efficiency of bed use are also achieved.

The advent of totally internal ureteric stents has the potential to reduce hospital stay in paediatric pyeloplasty. Traditionally, discharge from hospital has followed removal of an external transanastomotic drain, usually 5 days to a week post-operatively. The use of totally internal catheters negates the need for nursing supervision by removing external attachments that a paediatric patient might inadvertently dislodge. The length of hospital stay for pyeloplasty using a Double-J ureteric stent was compared with our previous method of transanastomotic feeding tube nephrostomy drainage. The results show the use of Double-J stenting to be advantageous in paediatric pyeloplasty by decreasing considerably the length of hospital stay. This is clearly of benefit to the patient, who returns to the family setting much earlier. Despite the need for an outpatient endoscopic procedure to remove the stent, savings in treatment costs and improved efficiency of bed use are also achieved.

ObjectivesWe review the various applications of laparoscopic and robotic-assisted laparoscopy in paediatric urology, as the laparoscopic and robotic approach in this population is gradually being recognised.MethodsWe searched PubMed for human studies in English that were published between 1990 and the present, focusing on laparoscopic nephrectomies and partial nephrectomies, laparoscopic and robotic pyeloplasties and ureteric reimplantation, laparoscopic orchidopexy and varicocelectomy. We also reviewed robotic-assisted laparoscopic urological major reconstructions. Key articles were reviewed, extracting the indications, techniques, and the advantages and disadvantages.Results and conclusionsLaparoscopy has a defined place in modern paediatric urological surgery. Laparoscopic nephrectomies, pyeloplasties and abdominal exploration for the evaluation and management of impalpable undescended testicles have become the standard of care. Robotic-assisted laparoscopic surgery is developing as a safe and effective option even for infant patients.

INTRODUCTION: Until recently, renogram, performed in children with pelvi-ureteric junction stenosis detected antenatally, has not been able to predict the probability of function improvement after surgery or the risk of function deterioration in case of conservative attitude. Recently, Schlotmann et al. have suggested that cortical transit might have this predictive role. The aim of this study, focused on those kidneys with severely impaired cortical transit, was to verify this statement. METHODS: All renograms performed in children during a 3-year period (n=729) were retrospectively reviewed and 19 pediatric patients were selected based on an antenatally detected unilateral pelvi-ureteric junction syndrome, the existence of at least two renograms during the follow-up and a severe cortical transit impairment, visually defined. Twenty-six pairs of data could be analyzed and allowed comparing preoperative and postoperative differential renal function (DRF), and the DRF changes during the conservative management. RESULTS: Among the 16 patients who underwent pyeloplasty, 10 showed a significant DRF improvement. Among the 10 patients with conservative follow-up, four showed a significant DRF deterioration. CONCLUSION: Severely impaired cortical transit seems to be a valuable marker of those patients who could benefit from a pyeloplasty, either because of the high probability of postoperative DRF improvement, or because of DRF deterioration in case of an conservative approach. However, a normal cortical transit, as defined in this study, does not exclude the risk of DRF deterioration. Alternatively, the design of this study does not allow excluding the fact that DRF might improve after pyeloplasty despite a normal cortical transit. © 2011 Wolters Kluwer Health, SCOPUS: ar.j, info:eu-repo/semantics/published

INTRODUCTION: Until recently, renogram, performed in children with pelvi-ureteric junction stenosis detected antenatally, has not been able to predict the probability of function improvement after surgery or the risk of function deterioration in case of conservative attitude. Recently, Schlotmann et al. have suggested that cortical transit might have this predictive role. The aim of this study, focused on those kidneys with severely impaired cortical transit, was to verify this statement. METHODS: All renograms performed in children during a 3-year period (n=729) were retrospectively reviewed and 19 pediatric patients were selected based on an antenatally detected unilateral pelvi-ureteric junction syndrome, the existence of at least two renograms during the follow-up and a severe cortical transit impairment, visually defined. Twenty-six pairs of data could be analyzed and allowed comparing preoperative and postoperative differential renal function (DRF), and the DRF changes during the conservative management. RESULTS: Among the 16 patients who underwent pyeloplasty, 10 showed a significant DRF improvement. Among the 10 patients with conservative follow-up, four showed a significant DRF deterioration. CONCLUSION: Severely impaired cortical transit seems to be a valuable marker of those patients who could benefit from a pyeloplasty, either because of the high probability of postoperative DRF improvement, or because of DRF deterioration in case of an conservative approach. However, a normal cortical transit, as defined in this study, does not exclude the risk of DRF deterioration. Alternatively, the design of this study does not allow excluding the fact that DRF might improve after pyeloplasty despite a normal cortical transit. © 2011 Wolters Kluwer Health, SCOPUS: ar.j, info:eu-repo/semantics/published

For conservation and restoration of the urinary tract functions plastic and reconstructive surgery is essential and significant, especially in cases of congenital anomalies. As representative procedures of plastic urological surgery, the techniques, indications and results of plastic repairs for hydronephrosis, anti-reflux procedure for vesicoureteral reflux (VUR) and urethroplasty for hypospadias were presented. During 17 years from Jan. 1977 to Feb. 1994, 503 cases in total underwent these types of urological plastic surgery, namely, 140 cases with hydronephrosis, 226 cases with VUR, and 137 cases with hypospadias. Postoperative courses were uneventful in all of them and the results were satisfactory. The operative technique of choice in pyeloplasty was that of Anderson-Hynes, and in anti-reflux procedure was that of Politano-Leadbetter. In urethroplasty for hypospadias the techniques of choice were SATO I in case of posterior hypospadias and SATO II in case of anterior hypospadias, respectively.