Exclusión renal por endometriosis profunda ureteral: a propósito de un caso / Renal exclusion due to deep infiltrating ureteral endometriosis: a case report

INTRODUCCIÓN: La endometriosis ureteral es una afección rara que afecta al 0.01-1,7% de las mujeres con endometriosis. Hasta un 30% cursa de forma asintomática y un 11,5-14,7% pueden evolucionar con falla renal. La falta de diagnóstico de la enfermedad puede terminar en una uropatía obstructiva y falla renal irreversible. Se presenta el caso de una paciente con afectación grave de la función renal secundaria a endometriosis profunda con compromiso ureteral. CASO CLÍNICO: Mujer de 35 años con endometriosis que consultó por exacerbación de los síntomas. En su estudio destaca, en la resonancia magnética, el hallazgo de endometriosis pélvica profunda y compromiso endometriósico intrínseco del uréter distal derecho, provocando una acentuada hidroureteronefrosis. El cintigrama renal demuestra acentuado compromiso de la función renal derecha, con una función relativa del 7%. Se realizaron nefrectomía total derecha y resección de enfermedad pélvica profunda laparoscópica, sin incidentes. CONCLUSIONES: La endometriosis ureteral representa un desafío diagnóstico y terapéutico. El manejo multidisciplinario entre radiólogos, ginecólogos y urólogos, mediante el diseño de una estrategia quirúrgica individualizada, es imprescindible para definir el tratamiento óptimo de estas pacientes.

INTRODUCTION: Ureteral endometriosis is a rare entity that affects 0.01-1,7% of women with endometriosis. Up to 30% of the patients are asymptomatic and 11.5-14.7% will develop renal failure. Misdiagnosis can lead to obstructive uropathy and permanent renal failure. We present the case of a patient with severe compromise of renal function secondary to deep infiltrating endometriosis with ureteral involvement. CASE REPORT: A 35-year-old woman with endometriosis presented with exacerbation of symptoms. Magnetic resonance showed deep pelvic endometriosis and intrinsic endometriotic involvement of the right distal ureter, causing a marked hydroureteronephrosis. Renal scintigram showed a severe compromise of the right renal function, with a relative function of 7%. Through laparoscopy a total right nephrectomy and resection of deep infiltrating endometriosis was performed. The patient had a satisfactory recovery in the postoperative period. CONCLUSIONS: Ureteral endometriosis presents a diagnostic and therapeutical challenge. Joint multidisciplinary management between radiologists, gynecologists and urologists through the design of an individualized surgical strategy is essential to define the optimal treatment for these patients.

Ureteropelvic junction obstruction caused by metastatic cholangiocarcinoma

ABSTRACT We describe the rare case of a 61-year-old female with right ureteropelvic junction (UPJ) obstruction caused by metastatic cholangiocarcinoma. Her past medical history was notable for cholangiocarcinoma treated with neoadjuvant chemoradiation and two orthotopic liver transplants six years earlier. Urology was consulted when she presented with flank pain and urinary tract infection. Diagnostic workup demonstrated right UPJ obstruction. She was managed acutely with percutaneous nephrostomy. She subsequently underwent robotic pyeloplasty and intrinsic obstruction of the UPJ was discovered. Histological examination revealed adenocarcinoma, consistent with systemic recurrence of the patient's known cholangiocarcinoma.

Iatrogenic ureteral obstruction during transvaginal ocyte retrieval

ABSTRACT Transvaginal oocyte retrieval is a crucial step in assisted reproductive technology. Various complications may arise during this procedure. Ureteral injury is a rare, but a serious complication in gynecological practice. During oocyte retrieval, ureteral injuries, detachment and obstruction can be seen, though rare. In this study, we will present ureteral obstruction that develops secondary to small hematoma, which mimics ovarian cyst torsion or ruptured ovarian cyst.

Endoscopic treatment for ureterovesical junction stenosis in patients with kidney transplantation: 13 cases report / 北京大学学报(医学版)

OBJECTIVE@#To evaluate the safety and efficacy of endoscopic treatment for ureterovesical junction (UVJ) stenosis in patients with kidney transplantation.@*METHODS@#A retrospective study was conducted among the patients with kidney transplantation diagnosed as UVJ stenosis from 2012 March to 2018 July in Urology and Lithotripsy Center, Peking University People's Hospital. Only the patients who received endoscopic treatment were included, with staged or same-session nephrostomy followed by a retrograde ureteroscopy to evaluate the ureteral stenosis. Incisions with laser, mono- or bipolar energy, or balloon dilation were used to manage the stenosis depending on different situations. Demographic characteristics and clinical data were gathered and analyzed, including age, gender, preoperative serum creatinine, hemoglobin, operation time, success rate, postoperative serum creatinine, hemoglobin, postoperative complications rate, and long-term stenosis recurrence rate.@*RESULTS@#In this study, 13 patients were included (9 males and 4 females). All the UVJ stenoses were diagnosed with preoperative ultrasound, CT scan, MRI, or urethrography. The mean age was 45 years (range 34-57 years). The mean preoperative serum creatinine was 243 μmol/L. Four patients developed UVJ stenosis 1 month after kidney transplantation, while the rest developed long-term stenosis. Fifteen operations were performed in all, of which 14 cases were successful while one failed. The first 8 cases received first-stage nephrostomy and second-stage endoscopic management of the stenosis, while the last 7 cases received the same session surgery. The mean operation time was 95.4 min vs. 68.9 min, and the immediate success rate was 87.5% vs. 100.0% in the first 8 cases and last 7 cases, respectively. The mean decrease of postoperative hemoglobin was 0.6 g/L and mean postoperative serum creatinine was 105 μmol/L. No postoperative fever, severe hematuria, and urine leak were observed. The mean postoperative hospital stay was 2.8 days. Three patients were able to remove ureteral stents and no recurrence was found with a follow-up time of 9, 17, and 82 months. The long-term stenosis recurrence rate was 76.9% (10/13).@*CONCLUSION@#Endoscopic approach for the treatment of UVJ stenosis in patients with kidney transplantation was safe and efficient in our study cohort. However, long term stenosis recurrence rate was high and needed to be paid attention to.

Laparoscopic management of recurrent ureteropelvic junction obstruction following pyeloplasty: a single surgical team experience with 38 cases

ABSTRACT Purpose To describe and analyze our experience with Anderson-Hynes transperitoneal laparoscopic pyeloplasty (LP) in the treatment of recurrent ureteropelvic junction obstruction (UPJO). Materials and methods 38 consecutive patients who underwent transperitoneal laparoscopic redo-pyeloplasty between January 2007 and January 2015 at our department were included in the analysis. 36 patients were previously treated with dismembered pyeloplasty and 2 patients underwent a retrograde endopyelotomy. All patients were symptomatic and all patients had a T1/2>20 minutes at pre-operative DTPA (diethylene-triamine-pentaacetate) renal scan. All data were collected in a prospectively maintained database and retrospectively analyzed. Intraoperative and postoperative complications have been reported according to the Satava and the Clavien-Dindo system. Treatment success was evaluated by a 12 month-postoperative renal scan. Total success was defined as T1/2≤10 minutes while relative success was defined as T1/2between 10 to 20 minutes. Post-operative hydronephrosis and flank pain were also evaluated. Results Mean operating time was 103.16±30 minutes. The mean blood loss was 122.37±73.25mL. The mean postoperative hospital stay was 4.47±0.86 days. No intraoperative complications occurred. 6 out of 38 patients (15.8%) experienced postoperative complications. The success rate was 97.4% for flank pain and 97.4% for hydronephrosis. Post-operative renal scan showed radiological failure in one out of 38 (2.6%) patients, relative success in 2 out of 38 (5.3%) patients and total success in 35 out of 38 (92.1%) of patients. Conclusion Laparoscopic redo-pyeloplasty is a feasible procedure for the treatment of recurrent ureteropelvic junction obstruction (UPJO), with a low rate of post-operative complications and a high success rate in high laparoscopic volume centers.

The burden of chronic ureteral stenting in cervical cancer survivors

ABSTRACT Purpose Ureteral obstruction in cervical cancer occurs in up to 11% of patients, many of whom undergo ureteral stenting. Our aim was to describe the patient burden of chronic ureteral stenting in a population-based cohort by detailing two objectives: (1) the frequency of repeat procedures for ureteral obstruction; and, (2) the frequency of urinary adverse effects (UAEs) (e.g., lower urinary tract symptoms, flank pain). Materials and Methods From SEER-Medicare, we identified 202 women who underwent ureteral stent placement prior to or following cervical cancer treatment. The frequency of repeat procedures and rate ratios were compared between treatment modalities. The rates and rate ratios of UAEs were compared between our primary cohort (stent + cervical cancer) and the following groups: no stent + cervical cancer, stent + no cancer, and no stent + no cancer. The “no cancer” group was drawn from the 5% Medicare sample. Results 117/202 women (58%) underwent >1 stent procedure. The frequency of additional procedures was significantly higher in patients who received radiation as part of their treatment. UAEs were very common in women with stent + cancer. The rate of UTI was 190 (per 100 person-years), 67 for LUTS, 42 for stones, and 6 for flank pain. These rates were 3-10 fold higher than in the no stent + no cancer control group; rates were also higher than in the no stent + cancer and the stent + no cancer women. Conclusions The burden of disease associated with ureteral stents is higher than expected and urologists should be actively involved in stent management, screening for associated symptoms and offering definitive reconstruction when appropriate.

Cervical cancer: Renal complications and survival after percutaneous nephrostomy / Câncer de colo uterino: complicações renais e sobrevida após nefrostomia percutânea

SUMMARY Introduction: Obstructive nephropathy is a frequent complication in the course of advanced cervical cancer (CC), and ultrasonography-guided percutaneous nephrostomy (PCN) is a well established technique for fast ureteral desobstruction. Objective: To identify possible factors related to the survival and quality of life of patients with advanced CC presenting acute urinary obstructive complications that after desobstruction by PCN recovered urinary flux and renal function. Method: This is an analytical, descriptive, cross-sectional study that included 45 patients with CC who underwent PCN and were divided into 2 groups: “death” (DG) and “survival” (SG), in a public hospital that is reference for oncologic diseases in Northern Brazil. Results: The mean serum creatinine of the patients preceding PCN was >10 mg/dL, and after PCN <2 mg/dL. The cutoffs of 8.7 g/dL for Hb (p=0.0241) and 27% for Ht (p=0.0065) indicated the values that better discriminate the outcomes of the groups. The presence of low blood pressure was statistically correlated (p=0.0037) to the outcome “death”. Changes in glomerular filtration rate (already reduced in all cases) were not associated to the levels of Hb/Ht or to the outcome “death” during the nephrological follow-up. Conclusion: PCN was responsible for the recovery of renal function in 61.7% of the patients, leading to interruption of renal replacement therapy (RRT) in all of those patients. Hb levels >8.7g/dL and Ht >27% were associated to longer survival, and the presence of low blood pressure during follow-up was associated with progression to death.

RESUMO Introdução: a nefropatia obstrutiva é complicação frequente na evolução do câncer do colo uterino (CCU) avançado e a nefrostomia percutânea guiada por ultrassonografia (NFT) é uma técnica bem estabelecida para a rápida desobstrução ureteral. Objetivo: esclarecer os fatores relacionados à evolução ou não para óbito e qualidade de vida das pacientes com CCU avançado com complicações obstrutivas urinárias agudas e que, após desobstrução pela NFT, recuperaram fluxo urinário e função renal. Método: foi realizado estudo transversal analítico descritivo, que avaliou dois grupos de pacientes com CCU submetidas à NFT [óbito (GO) e sobrevida (GS)], em um hospital público, referência para doenças oncológicas da região Norte do país. Resultados: a creatinina sérica média inicial era >10 mg/dL pré-NFT e tornou-se <2 mg/dL após. Quanto à sobrevida, os pontos de corte de 8,7 g/dL de Hb e 27% de Ht melhor discriminaram a evolução dos grupos GO e GS (p=0,0241 e p=0,0065). Hipotensão se associou significantemente (p=0,0037) com a evolução para óbito. Variações na taxa de filtração glomerular, que já era reduzida em todos os casos, não se associaram aos níveis de Hb/Ht ou à evolução para óbito durante seguimento nefrológico. Conclusão: a NFT permitiu a recuperação da função renal em 61,7% das pacientes com CCU, dispensando terapia de substituição renal. Níveis de Hb >8,7 g/dL e Ht >27% estiveram associados a maior sobrevida, e a hipotensão durante o seguimento associou-se com evolução para óbito.

Detour technique, Dipping technique, or IIeal bladder flap technique for surgical correction of uretero-ileal anastomotic stricture in orthotopic ileal neobladder

ABSTRACTBackground:Uretero-ileal anastomotic stricture (UIAS) is a urological complication after ileal neobladder, the initial management being endourological intervention. If this fails or stricture recurs, surgical intervention will be indicated.Design and Participants:From 1994 to 2013, 129 patients were treated for UIAS after unsuccessful endourological intervention. Unilateral UIAS was present in 101 patients, and bilateral in 28 patients; total procedures were 157. The previous ileal neobladder techniques were Hautmann neobladder, detubularized U shape, or spherical shape neobladder.Surgical procedures:Dipping technique was performed in 74 UIAS. Detour technique was done in 60 renal units. Ileal Bladder flap was indicated in 23 renal units. Each procedure ended with insertion of double J, abdominal drain, and indwelling catheter.Results:Follow-up was done for 12 to 36 months. Patency of the anastomosis was found in 91.7 % of cases. Thirteen patients (8.3%) underwent antegrade dilatation and insertion of double J.Conclusion:After endourological treatment for uretero-ileal anastomotic failure, basically three techniques may be indicated: dipping technique, detour technique, and ileal bladder flap. The indications are dependent on the length of the stenotic/dilated ureteral segment. Better results for long length of stenotic ureter are obtained with detour technique; for short length stenotic ureter dipping technique; when the stenotic segment is 5 cm or more with a short ureter, the ileal tube flap is indicated. The use of double J stent is mandatory in the majority of cases. Early intervention is the rule for protecting renal units from progressive loss of function.

Postoperative ureteral obstruction after endoscopic treatment for vesicoureteral reflux

PURPOSE: We undertook this study to evaluate the incidence, risk factors, management, and outcome of postoperative ureteral obstruction after endoscopic treatment for vesicoureteral reflux (VUR). MATERIALS AND METHODS: Ninety patients undergoing endoscopic treatment for VUR were retrospectively reviewed and classified into two groups according to ureteral obstruction: the nonobstruction group (83 cases, 122 ureters; mean age, 7.0+/-2.8 years) and the obstruction group (7 cases, 10 ureters; mean age, 6.2+/-8.1 years). We analyzed the following factors: age, sex, injection material, laterality, voiding dysfunction, constipation, renal scarring, preoperative and postoperative ultrasound findings, endoscopic findings, injection number, and injection volume. Additionally, we reviewed the clinical manifestations, natural course, management, and outcome of ureteral obstruction after endoscopic treatment. RESULTS: The incidence of ureteral obstruction after endoscopic treatment was 7.6% (10/132 ureters). The type of bulking agent used and injection volume tended to be associated with ureteral obstruction. However, no significant risk factors for obstruction were identified between the two groups. Three patients showed no symptoms or signs after the onset of ureteral obstruction. Most of the patients with ureteral obstruction experienced spontaneous resolution within 1 month with conservative therapy. Two patients required temporary ureteral stents to release the ureteral obstruction. CONCLUSIONS: In our experience, the incidence of ureteral obstruction was slightly higher than in previous reports. Our study identified no predictive risk factors for developing ureteral obstruction after endoscopic treatment. Although most of the ureteral obstructions resolved spontaneously within 1 month, some cases required drainage to relieve symptoms or to prevent renal function deterioration.

Laparoscopic Pyeloplasty for Ureteropelvic Junction Obstruction in Crossed Fused Ectopic Pelvic Kidney

Crossed fused renal ectopia is a rare anomaly and may be associated with pelvic ureteric junction obstruction (PUJO). The L-shaped fusion variety is even rarer. We report such a case with a crossed fused ectopic pelvic kidney (L-type) with PUJO and its successful laparoscopic management. Through this report we emphasize the importance of adequate preoperative imaging and intraoperative details to avoid mishaps.

Fibrosis retroperitoneal: presentación de un caso y revisión del tema / Retroperitoneal fibrosis: case report and literature review

Introducción: la primera descripción de obstrucción ureteral extrínseca por un proceso de fibrosis retroperitoneal se efectuó en 1905. En poco más de un siglo sólo se han reportado unos 800 casos de esta patología. Caso clínico: se reporta el caso de un paciente femenino de 55 años, que cursa con dolor abdominal difuso de larga evolución, acompañado de náusea, vómito, fiebre de 38°C e hipertensión de 160/100 mmHg. Se realiza tomografía axial computarizada observándose masa retroperitoneal que produce obstrucción de uréteres. Se realiza laparotomía exploradora con toma de biopsia y liberación de uréteres. El análisis histopatológico demuestra la presencia de fibrosis retroperitoneal, una entidad patológica poco frecuente, cuyo diagnóstico requiere un alto índice de sospecha en base a los hallazgos clínicos, de laboratorio y de gabinete. Revisión de la literatura: no se han formulado definiciones claras de los diferentes trastornos que se incluyen en el espectro de la fibrosis retroperitoneal, debido a lo infrecuente de esta enfermedad. Por esta razón hoy se carece de criterios diagnósticos y de una clasificación coherente de las diferentes formas que puede adoptar la enfermedad. Sin embargo, ante la sospecha de una fibrosis retroperitoneal se debe distinguir entre una forma idiopática y una secundaria, por las diferentes implicaciones para el tratamiento. Conclusión: la fibrosis retroperitoneal es un diagnóstico diferencial ante la presencia de dolor abdominal difuso asociado a síntomas de compresión ureteral o de grandes vasos.

Introduction. The first description of extrinsic uretheral obstruction by retroperitoneal fibrosis occurred in 1905. In little more than a century, about 800 cases of this disease have been reported. Case description. We report the case of a female 55 year-old patient who presents with diffuse abdominal pain of long duration, nausea, vomiting, fever of 38°C and hypertension of 160/100 mmHg. A CT scan is performed that shows a retroperitoneal mass that obstructs the urethers. Exploratory laparotomy was performed, urethers were released and biopsy was taken. Pathology analysis showed the presence of retroperitoneal fibrosis, a rare pathological entity whose diagnosis requires a high index of suspicion based on clinical, imaging and laboratory workup. Literature review. There are no clear definitions of the variety of disorders that are included in the spectrum of retroperitoneal fibrosis, due to the rarity of this condition. Consequently, we lack diagnostic criteria and a consistent classification of the different forms that it may adopt. However, when there is suspicion of retroperitoneal fibrosis, the first step is to establish whether it is idiopathic or secondary, as there will be treatment implications. Conclusion. Retroperitoneal fibrosis should be considered in the differential diagnosis whenever diffuse abdominal pain is associated with uretheral or great vessels compression.

Role of ureteric stents in relieving obstruction in patients with obstructive uropathy

The aim of this study is to evaluate the role of ureteric stents in relieving obstruction and improvement of kidney function in patients with obstructive uropathy. This study involved 138 patients with obstructive uropathy with age ranged from 2 months to 73 years. Patients classified into two groups: Group [I]: Includes 57 patients [41.3%], ureteric stents fixed to them; and Group [II]: Includes 81 patients [58.6%] managed by other treatment modalities. All patients underwent clinical assessment, Laboratory and radiologic investigations: At presentation and postoperative. These included: Complete urine analysis, urine culture and sensitivity, serum creatinine, serum urea nitrogen, serum uric acid, serum sodium [Na], serum potassium [K], Fasting blood glucose level and blood picture and plain X-ray [KUB], abdominal ultrasonography [US], diuretic renography and retrograde pyelography. Renal glomerular filtration rate [GFR] was used as an indicator for improvement of renal function after fixation of ureteric stent. In group I: 56 [71.8%] kidneys showed significant recovery compared to 61 kidneys [66.3%]. In group II, there is statistically significant relation between renal perfusion and renal recovery [P < 0.004], statistically significant relation between parenchymal thickness and recovery in both groups [P < 0.0002], statistically significant relation between degree of corticomedullary differentiation and recovery [P < 0.0003] and statistically significant relationship between hemoglobin levels at presentation and the recoverability [P < 0.002]. The predictors of renal recoverability revealed that ureteral stents alone can help in regaining renal function and significant improvement of clinical condition in patients with obstructive uropathy.

Steinstrasse predictive factors and outcomes after extracorporeal shockwave lithotripsy

PURPOSE: Urinary stone disease is a common medical problem. Extracorporeal shockwave lithotripsy (SWL) has been applied with high success and low complication rates. Steinstrasse (SS) is a possible complication after SWL. The aim of the present study was to prospectively evaluate the factors and outcomes associated with SS after SWL. MATERIALS AND METHODS: We have prospectively evaluated 265 SWL sessions (2005-2009). Two lithotriptors were used randomly: Siemens Lithostar and Dornier Compact S. All patients had imaging exams after 30 and 90 days or according to symptoms. RESULTS: SS was observed in 14 (5.3 percent) out of 265 SWL procedures (n = 175 patients, 51.5 percent women/48.5 percent men, mean ± SD age = 46.3 ± 15.5 years). SS was more common after SWL for pelviureteral calculi rather than caliceal stones (p = 0.036). There was a trend toward more occurrences of SS after SWL for larger stone area (> 200 mm², p = 0.072). Preoperative ureteral stent didn't prevent SS. SWL machine, intensity, number of pulses and frequency were not associated with SS formation. Post-SWL pain, fever and gravel elimination were factors associated with SS (p = 0.021; p = 0.011; p = 0.078). When SS occurred, treatment modalities included Medical Expulsive Therapy (MET), ureteroscopy and SWL. CONCLUSIONS: Steinstrasse is an uncommon event after SWL and seems to occur more frequently with larger pelviureteral stones. Impaction of stones is more frequent in the middle ureter. All patients should be followed after SWL, but SS should be specially suspected if there is macroscopic gravel elimination, flank pain and/or fever. When SS occurs, treatment should be promptly introduced, including medical expulsive therapy, surgical approach or SWL in selected cases. Further prospective studies are awaited to evaluated preventive measures for SS occurrence.

Urological complication following aortoiliac graft: case report and review of the literature / Complicação urológica após enxerto aorto-ilíaco: relato de caso e revisão de literatura

CONTEXT: Ureteral stenosis and ureterohydronephrosis may be serious complications of aortoiliac or aortofemoral reconstructive surgery. CASE REPORT: A 62-year-old female patient presented with a six-month history of left lumbar pain. She was a smoker, and had mild chronic arterial hypertension and Takayasu arteritis. She had previously undergone three vascular interventions. In two procedures, Dacron prostheses were necessary. Excretory urography showed moderate left ureterohydronephrosis and revealed a filling defect in the ureter close to where the iliac vessels cross. This finding was compatible with ureteral stenosis, and the aortoiliac graft may have been the reason for this inflammatory process. The patient underwent laparotomy, which showed that there was a relationship between the ureteral stenosis and the vascular prosthesis. Segmental ureterectomy and end-to-end ureteroplasty with the ureter crossing over the prosthesis anteriorly were performed. There were no complications. The early and late postoperative periods were uneventful. The patient evolved well and the results from a new excretory urogram were normal. We concluded that symptomatic ureterohydronephrosis following aortoiliac graft is a real complication and needs to be quickly diagnosed and treated by urologists.

INTRODUÇÃO: Estenose ureteral e ureterohidronefrose podem ser sérias complicações da cirurgia reconstrutiva aorto-femoral ou aorto-ilíaca. RELATO DE CASO: Uma paciente de 62 anos apresentou-se referindo história de dor lombar a esquerda há seis meses. Ela era fumante, portadora de hipertensão arterial crônica leve e arterite de Takayasu. Havia sido submetida a três intervenções vasculares. Em dois procedimentos o uso de prótese de Dacron foi necessário. Uma urografia excretora revelou moderada ureterohidronefrose à esquerda e falha de enchimento no ureter próximo ao cruzamento dos vasos ilíacos. Esse achado era compatível com uma estenose ureteral e o enxerto aorto-ilíaco poderia ser a causa do processo inflamatório. A paciente foi submetida a laparotomia, que evidenciou a relação entre estenose ureteral e a prótese vascular. Ureterectomia segmentar e uretroplastia término-terminal com o ureter passando anteriormente à prótese foram realizadas. Não ocorreram complicações. Os períodos de pós-operatório precoce e tardio transcorreram sem intercorrências. A paciente evoluiu bem e uma nova urografia excretora apresenta-se normal. Concluímos que ureterohidronefrose sintomática após enxerto aorto-ilíaco é uma complicação real e precisa ser rapidamente diagnosticada e tratada pelo urologista.

Laparoscopic ureteral reimplant for ureteral stricture

Purpose: Evaluate the initial experience of laparoscopic ureteral reimplant for ureteral stenosis. Materials and methods: From January 2004 to June 2008, 10 patients underwent 11 laparoscopic reconstruction surgeries for ureteral stenosis. Seven cases of stenosis of the distal ureter, two at the level of iliac vessels, a case of bilateral distal stenosis and one in the medium third. Eight ureteroneocystotomies were performed by extravesical technique with anti-reflux mechanism, two cases of vesical reimplant with Boari technique and one case using the psoas hitch technique. Results: The average surgical time was 166 minutes (115-245 min), mean blood loss was 162 mL (100-210 mL) and the average hospital stay was 2.9 days (2-4 days). There were two complications: a lesion of the sigmoid colon identified peroperatively and treated with laparoscopic sutures with good evolution, and a case of ureteral stone obstruction at the 30th day postoperative, treated by laser ureterolitotripsy. All patients had resolution of the stenosis at an average follow-up period of 18 months (3-54 months). Conclusions: Laparoscopic surgery represents a feasible, safe and low morbidity technique for ureteral reimplant in ureteral stenosis.

Laparoscopic ureteroneocystostomy for management of lower ureteric strictures

We assessed the results of laparoscopic transperitoneal ureteroneocystostomy with or without a psoas hitch for management of lower ureteral strictures. Between October 2005 and August 2008, 16 patients with lower ureteric strictures underwent laparoscopl uretroeocystostomy with or without a psoas hitch. Etiology of strictures was gynecological surgery in 11, surgery for stone disease in 3, ureterovaginal fistula in 1 and primary obstructive megaureter in 1. Transperitoneal 3- or 4-port laparoscopic ureteroneocystostomy was performed with or without psoas hitch. 1. All operations were successfully completed without any need for conversion to open. Mean operative time was171.56 min [range 130 to 260 min], mean blood loss was 93.44 cc [range 30 to 200 cc] and total hospital stay was 3.73 days [range 3 to 6 days]. Mean time to resume oral intake was 12.5 h [range 8 to 22 h]. Mean follow-up period was 21.83 months [range 6-39 months]. Postoperative follow-up investigations revealed successful outcome in all 16 patients, success being defined as relief of symptoms and radiological improvement, irrespective of the refluxing status. Non-refluxing status was achieved in 15 out of 16 patients as determined by micturition cystography. Laparoscopic ureteroneocystostomy is a safe and effective procedure, with inherent advantages of laparoscopic surgery

Utilización de la nefrostomía percutánea en la práctica urológica / Percutaneous nephrostomy in clinical practice

Objetivo: Presentar una serie de nefrostomías percutáneas realizadas únicamente por urólogos de un mismo servicio. Se describen las indicaciones y se detallan las complicaciones y los resultados obtenidos. Material y métodos: La serie esta constituida por 53 pacientes, 29 hombres y 24 mujeres, con una edad promedio de 64,2 años (rango 10 a 83 años). Se excluyen de este análisis las nefrostomías efectuadas para una nefrolitectomía percutánea. Resultados: La indicación primaria de la nefrostomía percutánea fue: obstrucción ureteral en 36 casos, pionefrosis en 13 e hidronefrosis secundaria a litiasis en 4 casos. La patología de base fue una obstrucción ureteral maligna en 31 pacientes, litiasis obstructiva en 13 casos, estenosis ureteral en derivación urinaria en 8 casos y 1 caso de estenosis pieloureteral. El procedimiento de nefrostomía fue unilateral en 26 casos (derecho en 27 e izquierdo en 17) y bilateral en 9 casos, para un total de 62 nefrostomías en 53 pacientes. La única complicación observada fue una obstrucción de la nefrostomía en un caso de derivación por obstrucción maligna, la cual requirió cambio sin inconvenientes. Conclusiones: La nefrostomía percutánea es un procedimiento de amplia difusión, de resultados satisfactorios, con baja morbilidad y con capacidad de poder ser realizada en forma ambulatoria. Recalcamos la importancia de que la colocación de la misma sea efectuada por el urólogo.

Objective: To report a series of percutaneous nephrostomies solely performed by urologist of a single institution. Indications, complications and results are presented. Material and methods: A total of 53 patiens, 29 male and 24 female with a mean age of 64.2 years (range 10 to 83 years) underwent percutaneous nephrostomy placement at our institution. Nephrostomies associated with lithotomy are excluded. Results: Primary indication for nephrostomy tube placement was: ureteral obstruction 36 cases, pyonephrosis 13 cases, hydronephrosis secondary to stone 4 cases. Malign ureteral obstruction was seen in 31 patients, obstructive calculi in 13 patients and ureteral malign stenosis in 8 patients. One patient presented with ureteropelvic junction obstruction. A total of 62 nephrostomies were placed, unilateral nephrostomy was performed in 26 cases and bilateral in 9 cases (27 right and 17 left). One patient with a ureteral obstruction secondary to malign pathology required nephrostomy tube replacement. Conclusions: Percutaneous nephrostomy is wide spread procedure with satisfactory results, low morbidity and it can be performed in an ambulatory basis. We emphasize the importance of the urologist being carried out by the urologist.

Marsupialización ureterorrenoscópica de quiste renal peripiélico obstructivo / Flexible ureteronephoscopy for surgical treatment of a symptomatyc peripelvic renal cyst

Relatamos un caso de gran quiste peripiélico causando obstrucción de la pelvis renal y episodios recurrentes de dolor lumbar. Se utilizó ureterorrenoscopia flexible para la marsupialización interna del cisto en el sistema colector renal, con electrocoagulación del interior del cisto. El caso y la técnica se describen con detalles.

We report a case of a large peripelvic renal cyst causing obstruction of renal pelvis and episodes of flank pain. Flexible ureteronephoscopy has been used for the internal marsupialization of cyst into the renal collecting system with eletrocoagulation of the inner part of the cyst. The case and technique are described in detail.