Management for Ureterovaginal Fistula: A Retrospective Study Comparing Early and Delayed Ureteral Reimplantation.

INTRODUCTION: The timing of surgical repair for ureterovaginal fistula (UVF) is under debate, here we introduce our experience to compare the safety and efficacy between early and delayed ureteral reimplantation for UVF. METHODS: Between January 2012 and January 2020, 22 patients who were diagnosed with UVF had received ureteral reimplantation. Baseline characteristics, history of previous abdominal surgery, operative profile, and follow-up data were collected and analyzed. RESULTS: Among 22 patients diagnosed with UVF, 12 patients received early ureteral reimplantation and others received delayed ureteral reimplantation. Both groups were comparable in baseline characteristics and detailed history of previous operations. The mean operative time of the early surgery group was 140.83 ± 35.28 min, while that of the delayed surgery group was 181.00 ± 43.83 min (p = 0.027). Patients of the early surgery group (183.33 ± 107.31 mL) had less blood loss compared with that of the delayed surgery group (285.00 ± 94.43 mL) (p = 0.030). After an overall mean follow-up of 34.55 months, the ureteral stricture rate of two groups was not statistically significantly different (16.67% in early repair vs. 40.00% in delayed repair, p = 0.348). CONCLUSION: With similar long-term outcomes, the early ureteral reimplantation had a shorter operative time and less blood loss. Moreover, the stress during the waiting period could be minimized. High-quality clinical studies with larger sample size are needed to confirm the superior nature of early surgery.

Total ureteral avulsion caused by uterine evacuation: a case report / 中华泌尿外科杂志

Currently, the total ureteral avulsion are mainly secondary to ureteroscopy, and it is rarely caused by uterine evacuation clinically. This paper reported a case of total ureter avulsion after uterine evacuation, treating by ileal replacement for ureter under general anesthesia, and the surgical outcome was good. Uterine evacuation is a routine, less risky procedure, but it also can lead to serious complications such as total ureteral avulsion or bladder rupture. For potential high-risk patients with uterine evacuation, preventive measures such as accurate localization under B-ultrasound guidance or pre-operative ureteral stents indwelling are useful to avoid the occurrence of such serious complications. If total ureteral avulsion occurs, ileal replacement for ureter is a viable and effective treatment.

Clinical study on ureteritis observed in contrast-enhanced computed tomography in the emergency department.

OBJECTIVE: We aimed to investigate the causes and clinical and laboratory features of patients with ureteritis observed on intravenous contrast-enhanced abdominopelvic computed tomography (APCT) conducted in the emergency department (ED). METHODS: All APCTs conducted in the ED from November 2017 to November 2020 were investigated for the presence of ureteritis. The incidence of ureteritis, presumed cause of ureteritis, and clinical as well as laboratory features of patients with ureteritis were retrospectively analyzed. RESULTS: Ureteritis was observed in 422 out of 7,386 patients (5.7%) who underwent APCTs. The two main reasons for undergoing APCT in the ED were abdominal pain (49%) and infection focus workup (33%). The first major cause of ureteritis was urinary tract infection (UTI) (351 of 422, 83%). Most patients (85%) were febrile, but 208 (59%) exhibited no urinary symptoms such as dysuria, increased frequency, or residual urine sense. The second major cause of ureteritis was ureteral stones (42 of 422, 10%). Thirty-two of 42 patients (76%) had simple obstructive uropathy, while 24% of patients had a combined infection along with an obstruction. Other rare causes were malignancy and the spread of adjacent inflammation. CONCLUSION: Ureteritis was a common finding observed in 5.7% of patients who underwent APCTs at the ED, and most of them were secondary to UTIs and ureteral stones. UTIs can cause ureteritis even without typical symptoms or signs suggestive of UTI, and diagnosis without an APCT can be difficult. More liberal use of APCTs should be considered when the cause of fever is difficult to diagnose.

Hospital Ownership, Geographic Region, Patient Age, Comorbidities, and Insurance Status Appear to Influence Patient Selection Robot-Assisted Ureteral Reimplantation for Benign Disease: A Population-Based Analysis.

Background: Robot-assisted ureteral reimplantation (RAUR) is a relatively new minimally invasive procedure. As such, research is lacking, and the largest adult cohort studies include fewer than 30 patients. Our aim was to be the first population-based study to report on national utilization trends, factors associated with patient selection, inpatient outcomes, and the relative cost of RAUR for adults with benign ureteral disease (BUD). Materials and Methods: The National Inpatient Sample (2010-2015) was queried to identify all elective, nontransplant-related, open and robot-assisted reimplants for adult BUD. Survey-weighted logistic regression using Akaike Information Criterion identified patient-/hospital-level factors associated with robotic procedure. Survey-weighted regression models examined the association of robotic procedure with outcomes and charges. Results: A weighted total of 9088 cases were included: 1688 (18.6%) robot assisted and 7400 (81.4%) open. There were significantly increased odds of RAUR across consecutive years (odds ratio [OR] = 3.0, p < 0.001) and among patients operated on at private for-profit hospitals (OR: 2.1; p = 0.01), but significantly decreased odds among older patients (OR = 0.98, p < 0.001), those with Medicaid (OR = 0.5, p = 0.02), those with 2+ comorbidities (OR = 0.6, p = 0.009), and those operated on in western (OR = 0.5; p = 0.005) states. RAUR was significantly associated with a reduced length-of-stay (incidence rate ratio: 0.60; p < 0.001), decreased odds of blood transfusion (OR = 0.40; p < 0.001), and a lower mean ratio of total hospital charges (ratio: 0.71; p = 0.006). Conclusions: This is the first population-based study to report on the utilization and clinical benefits of RAUR for adult BUD. Open reimplantation remains the most common surgical technique utilized, despite the potential benefits of RAUR. Future research is needed to explore the mechanisms behind patient-/hospital-level factors and surgical selection. Work to investigate potential barriers in access to robotic procedure can help us provide equitable care across patient populations.

Two cases report of uretero-arterial fistula with long term indwelling of ureteral stent / 中华泌尿外科杂志

Ureteral artery fistula (UAF) is a rare complication after long-term indwelling of ureteral stent. In this study, two cases were presented. Both of them underwent pelvic tumor surgery and radiotherapy, and had a history of cutaneous terminal ureterostomy and long-term indwelling of ureteral stents. The first case, a 52-year-old female, was admitted to hospital because of intermittent bleeding from ureteral dermostomy for 1 week on April 2, 2020. CT examination revealed hematocele in the left upper urinary tract, and left nephrectomy was performed.However, bleeding still presented and the distal ureteral resection was performed at the same time, and partial ureteral was ligated. Postoperative diagnostic was ureteral artery fistula. After 8 months of follow-up, no recurrent bleeding presented. Another case, a 82-year-old male, was admitted to hospital because of bleeding at the ureteral dermostomy for an hour on June 15, 2020. Contrast enhanced CT examination revealed intersecting of the left ureter and common iliac artery, and interventional surgery was performed, by which UAF was diagnosed. Embolization of left internal iliac artery and stent implantation of common iliac artery and external iliac artery were performed intraoperatively. The bleeding stopped immediately after the operation, and there was no further bleeding during follow-up of 6 months.

Clinical analysis of ureteral endometriosis complicated with hydronephrosis:92 cases series / 中华妇产科杂志

Objective:To investigate the diagnosis, treatment and prognosis of ureteral endometriosis with hydronephrosis.Methods:A retrospective study was performed of 92 cases diagnosed as ureteral endometriosis with surgery confirmed in Peking University First Hospital from January 2000 to January 2021.Results:The incidence of ureteral endometriosis was 0.9% (92/10 222), with an average age of (40.0±6.0) years. Among 92 cases, urological symptoms and pelvic pain including dysmenorrheal, periodic abdominal pain were the main forms of clinical characteristics, while 11 patients (12%, 11/92) were asymptomatic. All patients with ureteral endometriosis had hydronephrosis and hydroureter before surgery, hydronephrosis were left sided in 48 (52%, 48/92) patients, right sided in 39 (42%, 39/92) patients, both sided in 5 (5%,5/92) patients. The distal and middle sections of ureteral obstructions existed in 73 (79%, 73/92) patients and 19 (21%, 19/92) patients, respectively. Out of the 92 ureteral lesions 71 (77%, 71/92) patients were extrinsic lesions, 21 (23%, 21/92) patients presented intrinsic lesions. Of the 38 cases who took preoperative radionuclide renal dynamic imaging examination, there were 6 (16%, 6/38) cases of mildly damaged, 7 (18%, 7/38) cases of moderately dameged, 14 (37%, 14/38) cases of severely damaged, and 11 (29%, 11/38) cases of normal renal function. Laparotomy was decided in 25 (27%, 25/92) patients, and laparoscopic surgery in 67 (73%, 67/92) patients. In cases of ureteral surgery, ureterolysis, partial ureteral resection and ureterocystoneostomy, partial ureteral resection and end-to-end ureteral anastomosis and nephroureterectomy were undertaken in 52 (57%, 52/92), 20 (22%, 20/92), 12 (13%, 12/92) and 8 (9%, 8/92) patients separately. The median follow up was 108 months (range: 6 to 240 months). During the follow-up period, 68 (87%, 68/78) patients took urinary ultrasound after surgery, and 60 (88%, 60/68) cases of hydronephrosis disappeared, and 8 (12%, 8/68) cases were better than before.Conclusion:Most of the patients with ureteral endometriosis are impaired with renal function, and early surgical treatment could effectively relieve urinary obstruction and promote the recovery of renal function.

Hernia inguinoescrotal reincidente con megauréter: presentación de caso / Recurrent inguinoscrotal hernia with megaureter: a case report

RESUMEN La frecuencia de la enfermedad herniaria es una de las más altas dentro de los cuadros quirúrgicos. Sin embargo, su asociación al megauréter en el saco herniario o contenido es extremadamente rara y existen pocos reportes en la literatura internacional. El diagnóstico es incidental, ya sea por hallazgo transoperatorio o por estudios contrastados de imagen. Se presenta el caso clínico de un paciente con antecedente de hernia inguinal que fue sometido a una herniorrafia hace veinte años y que se presenta a un servicio de urgencias con un aparente defecto herniario. Además, padece diabetes mellitus que está mal controlada. Durante la estancia hospitalaria se confirma la reaparición de la hernia con un saco que contiene megauréter y adherencias visceroparietales con ciego en posición subhepática.

ABSTRACT Herniation is one of the most frequent surgical conditions. However, the presence of a megaureter in the hernia sac or content is extremely rare. Little has been reported on this topic in the world literature, and its diagnosis has been incidentally reached either as an intraoperative finding or during different contrast imaging studies. This is the clinical case of a patient with a history of inguinal hernia who underwent a herniorrhaphy 20 years ago and presented to the emergency department with a diagnostic impression of a relapsed hernial defect. He also had poorly-controlled diabetes mellitus. During his hospital stay, a diagnosis of relapsed hernia sac containing a megaureter was confirmed, and visceral-parietal adhesions and a subhepatic cecum were found.

Evolving surgical management of pediatric vesicoureteral reflux: is open ureteral reimplantation still the 'Gold Standard'?

ABSTRACT Vesicoureteral reflux, the retrograde flow of urine from the bladder into the upper urinary tract, is one of the most common urologic diagnoses in the pediatric population. Once detected, therapeutic options for urinary reflux are diverse, ranging from observation with or without continuous low-dose prophylactic antibiotics to a variety of operative interventions. While a standardized algorithm is lacking, it is generally accepted that management be tailored to individual patients based on various factors including age, likelihood of spontaneous resolution, risk of subsequent urinary tract infections with renal parenchymal injury, and parental preference. Anti-reflux surgery may be necessary in children with persistent reflux, renal scarring or recurrent pyelonephritis after optimization of bladder and bowel habits. Open, laparoscopic/robot-assisted and endoscopic approaches are all successful in correcting reflux and have been shown to reduce the incidence of febrile urinary tract infections.

Evolving surgical management of pediatric vesicoureteral reflux: is open ureteral reimplantation still the 'Gold Standard'?

Vesicoureteral reflux, the retrograde flow of urine from the bladder into the upper urinary tract, is one of the most common urologic diagnoses in the pediatric population. Once detected, therapeutic options for urinary reflux are diverse, ranging from observation with or without continuous low-dose prophylactic antibiotics to a variety of operative interventions. While a standardized algorithm is lacking, it is generally accepted that management be tailored to individual patients based on various factors including age, likelihood of spontaneous resolution, risk of subsequent urinary tract infections with renal parenchymal injury, and parental preference. Anti-reflux surgery may be necessary in children with persistent reflux, renal scarring or recurrent pyelonephritis after optimization of bladder and bowel habits. Open, laparoscopic/robot-assisted and endoscopic approaches are all successful in correcting reflux and have been shown to reduce the incidence of febrile urinary tract infections.

Diagnosis and treatment of unilateral ectopic ureter in children / 中华泌尿外科杂志

Objective To discuss the diagnosis and treatment of unilateral ectopic ureter in children.Methods The clinical data of 41 cases of ureteral ectopic children admitted to our hospital from January 2014 to June 2018 were retrospectively analyzed including the clinical features,diagnosis,surgical treatments.There were 4 males and 37 females patients,aged from 0.4 to 12.7 years,with an average of 3.5 years old.Urinary incontinence was the main manifestation in 35 cases,including 14 cases with urinary tract infection.Preoperative ultrasonography and IVP examination were performed in all the 41 children.The dynamic radionuclide renal imaging was performed in the children who showed no renal inhencement with IVP.There were 27 cases of ipsilateral renal duplication and 9 cases of ipsilateral renal dysplasia.Ectopic fusion of kidney with ipsilateral ectopic ureter has one case on each side,and bilateral renal duplication with ectopic fusion of kidney with left ureteral ectopic in 1 case.The ipsilateral kidneys were normal in 2 cases.There were 27 cases with renal duplication,24 cases with upper renal dysplasia due to upper heminephrectomy,3 cases with well upper renal function,2 cases with lower superior ureteral pelvis anastomosis,and 1 case with ureterocystostomy.Laparoscopic dysplasia nephrectomy was performed on 9 patients with renal dysplasia,and nephrectomy was performed on 3 patients with renal dysplasia with ectopic renal fusion.Ureterocystostomy was performed in 2 cases with normal kidney.Results All 41 patients were followed up for 4-57 months,with an average of 25.3 months.Among the 35 children with urinary incontinence before the operation,33 cases had complete disappearance of urinary incontinence symptoms,and 2 cases had urgent urinary incontinence after the operation,presenting as frequent and small amount of urine discharge,with a strong sense of urination urgency.The micturition interval was shortened,ranging from 30 to 40min in the daytime,and 2 to 3 hours at night.The parents of the children were required to remind them to micturate regularly.Of the 41 cases,3 developed urinary tract infection 6-10 months after operation,and cured by antibiotics without recurrence.Conclusions Ectopic ureter is relatively rare,but urinary incontinence is the most common clinical manifestation.Ultrasound examination could be the preferred examination method.IVP further identified the patients with ectopic ureter who had kidney combined with malformation and renal function.The surgical treatments are mainly based on the corresponding renal function,and the prognosis is good.

High Pressure Balloon Dilatation of Primary Obstructive Megaureter in Children: A Multicenter Study.

Aim of the Study: We described the initial experience of four referral centers in the treatment of primary obstructive megaureter (POM) in children, by high-pressure balloon dilatation (HPBD) of the ureterovesical junction with double JJ stenting. We managed a retrospective multicenter study to assess its effectiveness in long-term. Methods: We reviewed the medical records of all children who underwent HPBD for POM that require surgical treatment from May 2012 to December 2017 in four different institutions. The primary outcome measured was ureterohydronephrosis (UHN) and its degree of improvement after the procedure. Secondary outcomes were postoperative complications and resolution of preoperative symptomatology. Main Results: Forty-two ureters underwent HPBD for POM in 33 children, with a median age of 14.7 months - (range: 3 months -15 years). Ureterohydronephrosis improves in 86% of ureters after one endoscopic treatment. Three cases required a second HPBD. Four patients required surgical treatment for worsening of UHN after endoscopic treatment. The post-operative complication rate was 50% (21 ureters). In 13 cases (61%), they were related to double J stent. The median follow-up was 24 months (2 months -5 years) and all patients were symptom-free. Conclusion: We reported the first multicenter study and the largest series of children treated with HPBD, with an overall success rate of 92%. Endoscopic treatment can be a definitive treatment of POM since it avoided reimplantation in 90% of cases. Complications are mainly due to double J stent.

Performance of Adult Pyeloplasty Relative to Endourological Management in the Era of Robotic Surgery: Data from the Nationwide Inpatient Sample.

INTRODUCTION: Reports of robot-assisted pyeloplasty have increased. However, it is unclear if this change is due to increased diagnosis of adult ureteropelvic junction obstruction, a shift in management based on presumed efficacy, a desire to maximize robot use or some combination thereof. Therefore, we acquired and analyzed data on a national scale to determine the incidence of interventions to correct ureteropelvic junction obstruction in adults and to characterize trends in procedure selection. METHODS: Patients older than 18 years with ICD-9 procedure codes 55.87 (pyeloplasty) and 55.11 (endopyelotomy) were included in the study, with attention to those designated laparoscopic robotic assistance (17.42). Data were collected for the period from January 2000 through December 2012, and weighted to a national average using Nationwide Inpatient Sample guidelines. RESULTS: A total of 47,992 pyeloplasties were identified. Pyeloplasty rates exhibited a significant increase during this period [F(1,11)=41.38, p <0.01] and endopyelotomy rates exhibited a significant decrease [F(1,11)=64.7, p <0.01]. A higher percentage of pyeloplasties were performed robotically in 2012 vs 2009 (54% vs 44%, p <0.010). CONCLUSIONS: Rates of pyeloplasty appear to be increasing at the expense of endopyelotomy. The percentage of pyeloplasty cases performed robotically is increasing but it is unclear if this is due to superior results or a need for increased robot use.

Diagnosis and treatment of duplication of the renal pelvis and ureter / 中国医师进修杂志

Objective To evaluate the diagnosis and treatment of duplication of the renal pelvis and ureter. Methods The clinical data of 9 patients with duplication of the renal pelvis and ureter who were treated from May 2014 to January 2018 in the Second People′s Hospital of Lianyungang were retrospectively analyzed. Of the 9 cases, 1 case was male, and 8 cases were female. The age range from 6 to 68(40.4 ± 20.6) years. Three cases of duplex kidneys were on the left side, 4 cases on the right side, and 2 cases on the both side. 6 cases had imcomplete duplex systems and 3 cases had complete duplex systems. The diagnosis rate of ultrasound, intravenous urography (IVU), CT scan, magnetic resonance urography (MRU), retrograde pyelography (RPG) was 3/9, 7/8, 5/9, 0/1 and 2/2 respectively. Results One case with simple urinary tract infection was cured by antimicrobial agents, and 1 case with lower ureteral calculus was cured by lithagogue drugs. One case with renal calculus and pyonephrosis in upper moiety of duplex kidney underwent retroperitoneoscopic nephrectomy, 1 case with ureteropelvic junction obstruction and horseshoe kidney underwent division of the isthmus and pyeloplasty, and 2 cases with ureterocele underwent transurethral incision. The clinical symptoms of patients who underwent surgery were cured in all cases. Three cases without complications underwent conservative treatment, and follow-up observation showed no complications. Conclusions Duplication of the renal pelvis and ureter can be diagnosed properly based on imaging data. IVU has a significant advantage, while RPG has high specificity in difficult cases. Treatment should be individualized according to clinical symptoms, complications and other urinary tract congenital anomaly.

A Case of an Ureteropelvic Junction Obstruction Caused by a Crossing Vessel

Ureteropelvic junction obstruction is one of the common causes of hydronephrosis in infancy and childhood. Most cases of ureteropelvic junction obstruction are diagnosed prenatally and are usually asymptomatic. Although less common, older children can experience ureteropelvic junction obstruction that presents with symptoms including flank or abdominal pain. Here, we present the case of a nine-year-old healthy girl who had repeated flank pain and abdominal symptoms, with mild left hydronephrosis, for several months. Computed tomography that was performed during the period of acute flank pain revealed aggravated hydronephrosis on her left kidney, which was secondary to an ureteropelvic junction obstruction. She underwent laparoscopic pyeloplasty, and a crossing vessel that passed the ureteropelvic junction was identified. In addition, we reviewed the current literature of this rare entity.

[Tamsulosin, oxybutynin or their combination in the treatment of ureteral stent-related symptoms]. / Tamsulosin, oxybutynin or their combination in the treatment of ureteral stent-related symptoms.

BACKGROUND: The aim of this paper is to compare the efficacy of tamsulosin, oxybutynin or their combination for the treatment of symptoms related to double J stent (DJS). METHODS: Randomized clinical non-blinded trial with three arms (tamsulosin, oxybutynin or combination) to assess the improvement of ureteral related symptoms with DJS with the questionnaire of Ureteral Stent Symptom Questionnaire (USSQ) and the adverse effects of treatment. Evaluations were made at 7 and 21 days after the placement of DJS. The maneuvers were compared using Chi squared test, Kruskall-Wallis, ANOVA and Wilcoxon considering a statistically significant p ≤ 0.05. RESULTS: 170 patients with CJJ were evaluated. A perprotocol analysis was performed in 142 patients, 53 received tamsulosin (37.4%), 42 oxybutynin (29.6%) and 47 the combination of both (33%). At 7 and 21 days the improvement was similar in all three arms. Men with tamsulosin and women with oxybutynin had less general symptoms. CONCLUSIONS: Tamsulosin, oxybutynin or its combination similarly improve ureteral stent related symptoms and this improvement becomes more noticeable over time. Men are less symptomatic with tamsulosin and women with oxybutynin.

OBJETIVO: comparar la eficacia de tamsulosina, oxibutinina o su combinación para el tratamiento de los síntomas relacionados con el uso de catéter doble J (CJJ). MÉTODOS: ensayo clínico aleatorizado, no cegado, de tres brazos (tamsulosina, oxibutinina o la combinación), para evaluar la mejoría de los síntomas asociados a CJJ con el cuestionario de síntomas asociados a catéteres ureterales (USSQ) y los efectos adversos del tratamiento. Las evaluaciones se hicieron a los 7 y 21 días de colocado el CJJ. Las maniobras se compararon mediante Chi cuadrada, Kruskall-Wallis, ANOVA y Wilcoxon, considerando estadísticamente significativa una p ≤ 0.05. RESULTADOS: se evaluaron 170 pacientes con CJJ. El análisis se realizó por protocolo con 142 pacientes, 53 recibieron tamsulosina (37.4%), 42 oxibutinina (29.6%) y 47 la combinación de ambos (33%). A los 7 y 21 días la mejoría fue similar en los tres brazos. Los hombres con tamsulosina y las mujeres con oxibutinina tuvieron menos síntomas generales. CONCLUSIONES: la tamsulosina, oxibutinina o su combinación mejoran de manera similar los síntomas por CJJ y esta mejoría se hace más notoria a través del tiempo. Los hombres están menos sintomáticos con tamsulosina y las mujeres con oxibutinina.

Transperitoneal Intravesical Technique for Laparoscopic Ureteral Reimplantation to Treat Terminal Ureteral Stenosis.

OBJECTIVE: To describe a newly developed transperitoneal intravesical technique for laparoscopic ureteral reimplantation in patients with terminal ureteral stenosis. METHODS: Between July 2009 and May 2015, laparoscopic transperitoneal intravesical ureteral reimplantation was performed in 16 patients with terminal ureteral stenosis without vesicoureteral reflux (VUR). An incision was made in the superior bladder wall of the affected side with an electric hook. The bladder mucosa was then circumferentially cut away from the ureteral orifice to a distance of 0.5 cm, and the intramural portion of the ureter was freed from the bladder wall and dissected until 4 to 5 cm of terminal ureter was mobilized. The stenotic segment was resected, and a longitudinal cut was made in the mobilized ureter. The terminal ureter was then evaginated and sutured to the bladder wall to form a papilla. All patients underwent standard postoperative examinations. RESULTS: All of the 16 operations were successful, and none required conversion to an extravesical approach or open surgery. The operation time ranged from 85 to 135 minutes (mean 98 minutes), and the estimated blood loss was ∼30-60 mL (mean 42 mL). There were no obvious intraoperative or postoperative complications. Resolution of hydronephrosis was achieved in all 16 patients, and VUR of the operated ureter was not detected at postoperative follow-up. CONCLUSIONS: The transperitoneal intravesical technique of laparoscopic ureteral reimplantation that we describe was safe and feasible in our 16 patients and may be an alternative surgical treatment for terminal ureteral stenosis in patients without VUR.

Robot-assisted ureteroureterostomy in pediatric patients: current perspectives.

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

Clinical applications of rigid dilatation using double catheters method for ureteric stenosis / 中国医师进修杂志

Objective To evaluate the clinical applications of rigid dilatation using double catheter method for ureteric stenosis.Methods The clinical data of 51 ureteric stenosis patients who had underwent rigid dilatation using double catheters method were retrospectively analyzed. Results Among the 51 patients,the ureteroscopy successfully went through the stricture in 46 cases(90.2%),and all patients had no ureteral perforation or laceration.Among the 5 patients in whom ureteroscopy did not go successfully through the stricture,2 cases were placed double J tube,2 cases underwent percutaneous nephrolithotomy,and 1 case underwent two stage ureteral stricture resection and religation.All patients were examined by ultrasound examination 3 months after the treatment,and the degree of hydronephrosis was partial remission. Conclusions The double catheters method is a safe and effective way for rigid dilatation for ureteric stenosis,and it is worth popularizing.

A novel case presenting with an unusual ureteral diverticular lesion similar to adenomyomatous hyperplasia of the gallbladder.

We present the first case of an unusual ureteral diverticular lesion demonstrating similarities to adenomyomatous hyperplasia of the gallbladder. A 68-year-old asymptomatic Japanese man with high prostate-specific antigen levels was clinically evaluated. Left hydronephrosis and benign prostatic hyperplasia were detected. A bilateral retrograde pyelogram revealed that the upper and middle portions of the left ureter exhibited an irregular narrow lumen and some pooling of contrast material, which was compatible with ureteral pseudodiverticulosis. Although no malignant cells were seen on cytology, computed tomography detected a fusiform shaped lesion with a circumferential thick wall including multiple diverticulae. Left nephroureterectomy was performed because malignancy could not be ruled out. Pathology demonstrated that the ureteral lesion showed a localized thick wall consisting of multilocules and/or multicysts and a hyperplastic muscularis propria. The cysts were mostly seen in the muscularis propria or a deeper site. The inner layers of the cysts were lined with normal urothelium, and some cysts opened onto the mucosal surface, indicating that they were derived from invaginated mucosal epithelium. We believe that this lesion may be a novel form of diverticular disorder demonstrating similarities to adenomyomatous hyperplasia of the gallbladder.