Outcomes of an enhanced recovery after radical cystectomy program in a prospective multicenter study: compliance and key components for success.

OBJECTIVE: To investigate the effect of an Enhanced Recovery After Surgery (ERAS) program on complications and length of stay (LOS) after radical cystectomy (RC) and to assess if the number and type of components of ERAS play a key role on the decrease of surgical morbidity. MATERIALS AND METHODS: We analyzed the data of 277 patients prospectively recruited in 11 hospitals undergoing RC initially managed according to local practice (Group I) and later within an ERAS program (Group II). Two main outcomes were defined: 90-day complications rate and LOS. As secondary variables we studied 90-day mortality, 30-day readmission and transfusion rate. RESULTS: Patients in Group II had a higher use of ERAS measures (98.6%) than those in Group I (78.2%) (p < 0.05). Patients in Groups I and II experienced similar complications (70.5% vs. 66%, p = 0.42). LOS was not different between Groups I and II (12.5 and 14 days, respectively, p = 0.59). The risk of having any complication decreases for patients having more than 15 ERAS measures adopted [RR = 0.815; 95% confidence interval (CI) 0.667-0.996; p = 0.045]. Avoidance of transfusion and nasogastric tube, prevention of ileus, early ambulation and a fast uptake of a regular diet are independently associated with the absence of complications. CONCLUSIONS: Complications and LOS after RC were not modified by the introduction of an ERAS program. We hypothesize that at least 15 measures should be applied to maximize the benefit of ERAS.

Biochemical markers of bone turnover and clinical outcome in patients with renal cell and bladder carcinoma with bone metastases following treatment with zoledronic acid: The TUGAMO study.

BACKGROUND: Levels of bone turnover markers (BTM) might be correlated with outcome in terms of skeletal-related events (SRE), disease progression, and death in patients with bladder cancer (BC) and renal cell carcinoma (RCC) with bone metastases (BM). We try to evaluate this possible correlation in patients who receive treatment with zoledronic acid (ZOL). METHODS: This observational, prospective, and multicenter study analysed BTM and clinical outcome in these patients. Serum levels of bone alkaline phosphatase (BALP), procollagen type I amino-terminal propeptide (PINP), and beta-isomer of carboxy-terminal telopeptide of type I collagen (ß-CTX) were analysed. RESULTS: Patients with RCC who died or progressed had higher baseline ß-CTX levels and those who experienced SRE during follow-up showed high baseline BALP levels. In BC, a poor rate of survival was related with high baseline ß-CTX and BALP levels, and new SRE with increased PINP levels. Cox univariate analysis showed that ß-CTX levels were associated with higher mortality and disease progression in RCC and higher mortality in BC. Bone alkaline phosphatase was associated with increased risk of premature SRE appearance in RCC and death in BC. CONCLUSION: Beta-isomer of carboxy-terminal telopeptide of type I collagen and BALP can be considered a complementary tool for prediction of clinical outcomes in patients with BC and RCC with BM treated with ZOL.

Usefulness of bone turnover markers as predictors of mortality risk, disease progression and skeletal-related events appearance in patients with prostate cancer with bone metastases following treatment with zoledronic acid: TUGAMO study.

BACKGROUND: Owing to the limited validity of clinical data on the treatment of prostate cancer (PCa) and bone metastases, biochemical markers are a promising tool for predicting survival, disease progression and skeletal-related events (SREs) in these patients. The aim of this study was to evaluate the predictive capacity of biochemical markers of bone turnover for mortality risk, disease progression and SREs in patients with PCa and bone metastases undergoing treatment with zoledronic acid (ZA). METHODS: This was an observational, prospective and multicenter study in which ninety-eight patients were included. Patients were treated with ZA (4 mg every 4 weeks for 18 months). Data were collected at baseline and 3, 6, 9, 12, 15 and 18 months after the beginning of treatment. Serum levels of bone alkaline phosphtase (BALP), aminoterminal propeptide of procollagen type I (P1NP) and beta-isomer of carboxiterminal telopeptide of collagen I (ß-CTX) were analysed at all points in the study. Data on disease progression, SREs development and survival were recorded. RESULTS: Cox regression models with clinical data and bone markers showed that the levels of the three markers studied were predictive of survival time, with ß-CTX being especially powerful, in which a lack of normalisation in visit 1 (3 months after the beginning of treatment) showed a 6.3-times more risk for death than in normalised patients. Levels of these markers were also predictive for SREs, although in this case BALP and P1NP proved to be better predictors. We did not find any relationship between bone markers and disease progression. CONCLUSION: In patients with PCa and bone metastases treated with ZA, ß-CTX and P1NP can be considered suitable predictors for mortality risk, while BALP and P1NP are appropriate for SREs. The levels of these biomarkers 3 months after the beginning of treatment are especially important.

BCG shortage for intravesical instillation is associated with early tumoral recurrence in patients with high-risk non-muscle invasive bladder tumours.

INTRODUCTION: During 2019 there was a worldwide shortage of BCG strains for intravesical instillation, limiting the availability of full dose schemes for maintenance courses. The main objective was to analyze the impact on tumoral relapse secondary to BCG shortage in our center. Secondary outcomes included recurrence and progression-free survival rates and tumoral relapse specific characteristics. METHODS: Retrospective cohort study including 158 subjects (64 treated during 2019 and 94 during 2017) with high-risk non-muscle invasive bladder cancer and treated with a combination of Transurethral bladder resection (TURB) followed by adjuvant intravesical instillation with BCG in a tertiary hospital in Spain. Basal characteristics of both groups were analyzed. Times to event of interest (relapse; including recurrence and/or progression) were estimated with Kaplan-Meier survival analysis. Disease-free survival rates were analyzed using a multivariable Cox regression model of proportional hazards. RESULTS: Median follow-up in the 2019 sample was 24 months and 50 months in the 2017 group with a median number of instillations of 8 and 12 respectively. Median time to relapse of 285 days (145-448) during 2019 and 382 days (215-567) in 2017 were observed (logRank p = 0.025). Further multivariable analysis revealed a proportional hazard ratio (HR) for disease-free survival rate of 1.87 (95% CI: 1.04-3.37 p = 0.036). No statistically significant differences in tumoral relapse characteristics were observed. CONCLUSION: BCG shortage and subsequent reduced-dose schemes used for intravesical instillation due to limited availability, increase early tumoral relapse rates. These findings are consistent with available evidence, showing the need for full-dose BCG courses.

Women in urology: what is their current situation in Spain?

OBJECTIVE: To analyze the current state of women in urology in Spain. MATERIAL AND METHODS: Descriptive study based on the results of an online survey sent between February and April 2020 through the database of the Residents and Young Urologists group (RAEU) of the Spanish Association of Urology (AEU). Characteristics of the survey and its results were analyzed. RESULTS: In total, 257 responses were obtained from 210 women (81.71%) and 47 men (18.29%) belonging to 111 hospitals. Statistically significant differences were observed (p < 0.001) with a higher proportion of men in all categories except for the group of young female and male attendings (29-39 years, p = 0.789), and the group of female residents against male residents (p = 0.814). The number of men was higher in hospitals with subspecialty units except for the Pelvic Floor Unit, where no statistically significant difference was observed (p = 0.06). Regarding positions of responsibility, only 7 out of 111 hospitals had female Department Chiefs. CONCLUSIONS: Women's representation in urology is increasing, mainly due to the younger generations. However, the access of these women to relevant positions is anecdotal.

Evolution and current status of the management of functional and pelvic floor pathology in the hospitals of the Community of Madrid.

INTRODUCTION AND OBJECTIVE: Pelvic floor dysfunction (PFD) includes a large number of pathologies subjected to a significantly varied management, depending on the hospitals' resources and educational levels of their professionals. The aim of this study is to determine and describe the clinical variability in the management of PFD in the urology departments of the public health centers of the Community of Madrid, as well as the resources currently available in these centers. MATERIAL AND METHODS: The survey was carried out in September 2021 and was addressed to physicians specialized in functional urology in the public hospitals of the Community of Madrid. This survey is based on the one performed in 2011 by Díez et al. for the same purpose. The characteristics of the healthcare services provided in the different centers and the management of the main functional pathologies of the pelvic floor were analyzed. The results were compared with those of the 2011 survey for equivalent questions. RESULTS: The number of Pelvic Floor Units (PFUs) has remarkably increased in the last 10 years. The use of adjustable devices in the treatment of male SUI has become widespread in the centers included in the survey. Laparoscopic/robotic sacrocolpopexy has become the gold standard treatment for pelvic organ prolapse (POP). CONCLUSIONS: Multidisciplinary PFUs represent the reference framework for the management of PFD. Variability in the management of urinary incontinence, POP, bladder pain syndrome and pudendal nerve neuropathy is recognized.

The candidate for renal transplantation work up: medical, urological and oncological evaluation.

UNLABELLED: Renal transplantation prolongs life, reduces morbidity, improves quality of life, and enables social rehabilitation of patients with end stage renal disease (ESRD). Kidney transplantation is a surgical procedure with inherent risks due to anesthesia and the surgical procedure itself. In ESRD patients medical background and comorbidities are crucial at the time of considering a renal transplant candidate because they can determine the procedure success OBJECTIVES: To update and review, according to recent literature, the evaluation of renal transplant candidates. METHODS: We performed a retrospective review of medical literature published in Medline/Pubmed about the most important facts of medical, urological and oncological evaluation of ESRD patients candidates to renal transplant. RESULTS: Pretransplant medical evaluation aims to diagnose, treat, and optimize any preexisting disease, and how these can interfere with patient and graft survival. It is important to consider age, cardiovascular disease, presence of diabetes mellitus, coagulation disorders, obesity, gastrointestinal diseases, ESRD situation and associated complications, active infection and non compliance with treatment and follow up. Urological requirements for successful renal transplantation are the absence of urinary infections, a compliant and continent reservoir, and a reliable method of achieving complete bladder evacuation. Certain urological diseases may not be obvious in the anuric patient. Pretransplant urological evaluation aims to diagnose, treat, and optimize any preexisting urological disease that can jeopardize transplant evolution. Cancer is a frequent and recognized complication of organ transplantation. The need of continuous immunosuppressive therapy may lead to immunosuppression-related side effects and direct oncogenic effects. Pre-existing malignancies should be extensively evaluated before proceeding to transplantation. Appropriate screening for malignancies is recommended in ESRD patients during routine pretransplant evaluation. CONCLUSION: This review highlights the importance of performing a comprehensive medical, urological and oncological assessment before transplantation. We will go through these mayor aspects of the evaluation of ESRD patients, how these might affect renal transplantation, which complementary test should be performed, and what are the latest recommendations for those situations. Careful pre-operative work-up of every transplant candidate is mandatory to improve post-transplant organ and patient survival. The workup should be tailored according to patients ' specific conditions, by a multidisciplinary approach before proceeding to transplantation.

Fifty ways to improve presentations in urology. / Cincuenta consejos para mejorar las presentaciones en urología.

BACKGROUND: Our profession permanently demands intercommunication of medical knowledge among colleagues; either in small environments such as hospitals or at larger ones such as congresses or academic courses. New technologies such as PowerPoint® are not developed enough to provide good presentations, and its employment does not always grant effective results. OBJECTIVE: In order to improve our academic presentations, we present several tools that may help us avoid the most common mistakes. EVIDENCE ACQUISITION: Literature search in PubMed and Google Scholar. We have divided the analysis into 3 sections: structure of the presentation, slide design, presentation to the audience. Each section includes a list of 50 short tips. RESULTS: Fifty tips following the study objectives. CONCLUSIONS: The scientific evidence that supports the information on how to improve presentations is mostly based on expert opinions. However, almost every work agrees that presentations must use simple structures which does not make them less scientific; their content must be developed for a specific audience, and it must be the speaker, not the slides, who captures the audience attention. Making a simple and didactic presentation of complex content supported by multimedia tools is one of the speaker's highest intellectual challenges of these days.

[Renal transplantation with living donors. A critical analysis of surgical procedures based on 40 years of experience]. / Transplante renal de donante vivo: un análisis crítico de estrategias quirúrgicas basado en 40 años de experiencia.

INTRODUCTION: Absolute priority in an LDKT programme are donnor safety and kidney optimal anatomical and functional preservation. Reduced donnor morbidities, both at short and long term, are important objectives. Excellent technical grafting is a must as are the strategies employed for facilitatig it. We revised the incidences of our whole LDKT programme (40 years 243 donors) to confirm if these exigences have been acomplished or a change to new surgical procedures is recommended. MATERIAL AND METHODS: Between 1968-2008 243 nephrectomies and grafting has been performed, a reduced number per year (A cadaver programme has been running simultaneously since 1964). For the nephrectomies a Turner-Warrick apprach was inititialy used and since 1973 a miniincisional, anterior, extraperitoneal approach of approximately 10 cm in length. The right kidney was removed in 75% of the cases and the right iliac area for the implant in 85% In adjacent opperating rooms, one team performs the nephrectomy while the other prepares and dissects free the grafting vessels. Most of the time the same senior surgeon performed both operatios: the nephrectomy and the implant. Peroperative and postoperative complications were evaluated by urologists and nephrologists in charge. RESULTS: No donors dead, organs lost or major complications in the donors have been documented. Minor complications such as intestinal paresia, wound infection, persistent incisional pain were common. Miniincisional abdominal approach reduced postoperative pain and hospital stay (4 days). At long term no incisional hernia or abdominal paresia have been documented. Simultaneous work reduces ischemia time (30-45 s warm: 30-45 min cold) and opperatig room occupation(patient preparation plus anesthesia plus operation) estimated in 90-120 min for the nephrectomy and 120-160 for the grafting. The responsibility of the senior surgeon in both procedures facilitates vessel selection for the grafting. CONCLUSIONS: No reasons have been found to reconvert our current nephrectomy procedure to laparoscopic or modify current surgical strategy. Superior safety of open surgery for donors and organs is confirmed. Pain and recovery time are reduced in laparoscopic surgery but not as much when compared with miniincisional approach. Open surgery permits optimal anatomical and functional organ extration facilitatig the quality of the implant. As numbers matter in laparoscopic surgery open nephrectomy is recommended for reduced LDKT programmes.

[Effectiveness and tolerability of zoledronic acid in the treatment of metastatic prostate cancer]. / Efectividad y tolerabilidad del acido zoledrónico en el tratamiento del cancer de próstata metastásico.

OBJECTIVES: To assess the effectiveness and tolerability of zoledronic acid in prostate cancer patients with bone metastases at the hormone-sensitive (HS) and hormone-independent (HI) stages. MATERIALS AND METHODS: A nationwide, observational, prospective, open and multi-centre trial was devised, with a total of 218 male patients diagnosed with prostate cancer at the HS stage (36%) or HI stage (64%) who were administered zoledronic acid (4 mg/IV/month for 6 months) in addition to their specific oncological treatment. Effectiveness was assessed by the following means: 1) Assessment of the improvement in pain and mobility; 2) Incidence and time to onset of skeletal-related events (SREs) and 3) Analysis of bone markers. Tolerability was assessed by means of registering the number and type of adverse effects. A satisfaction survey was carried out amongst the patients after the end of the trial. RESULTS: Out of the 218 patients, 170 (78%) were evaluable for effectiveness. A decrease in pain ratings at rest and during movement was observed in all patients, whether in the HS or HI groups (p < 0.0001). Improved mobility was observed likewise (p = 0.005), as was quality of life. The global incidence of skeletal events was 11.2%, with a time to onset of SREs of 10.7 months. There were no significant differences observed between HS vs. HI patients. Osteolysis markers (N-telopeptide) decreased significantly with the treatment across both the HS and HI groups. For safety reasons. 212 patients were evaluable (97.2%). The incidence of adverse drug reactions was 16% (34/212) and was found to be significantly higher in HS patients (22.4%) compared with HI patients (11.9%). Overall, the tolerability of zoledronic acid was good, with no significant morbidity in either group (HS and HI). 66% of the patients reported feeling satisfied or very satisfied. CONCLUSIONS: Zoledronic acid proved effective in the relief of pain, improving mobility and quality of life as well as reducing or delaying the occurrence of skeletal-related events in prostate cancer patients presenting metastatic bone disease, regardless of the phase, whether HS or HI, they found themselves in. Tolerability and patient satisfaction were rates as good.

Polycystosis of the renal sinus or polycystic kidney disease Controversies, challenges and history of a shared discovery. / Poliquistosis del seno renal o hilioquistosis. Controversias, retos e historia de un descubrimiento compartido.

OBJECTIVE: To recall the history of the discovery of non-nephron cystic disease, detected simultaneously in 2 hospitals in Madrid, and the vicissitudes that the authors endured during the process of recognising this disease, while being ignored by the international scientific literature. MATERIAL AND METHOD: We analysed the authors' first publications and presentations, their correspondence relaying the difficulties in reporting the confusion with adult polycystic kidney disease (APKD) and the subsequent nosological identification of the process. We consulted with individuals who worked with the 2 authors to increase the accuracy and objectivity of the history report. RESULTS: We confirmed the authors' remarkable efforts in getting the process definitively recognised despite the notable difficulties. CONCLUSIONS: Rigorous clinical observation recognises processes ignored by the medical literature, and the correct application of the scientific method helps identify and reveal new nosological entities, confirming with this story's example that, in medicine, there are no exhausted issues.

Laparoscopic partial nephrectomy with prior superselective embolisation as treatment for giant renal angiomyolipoma. / Nefrectomía parcial laparoscópica previa embolización supraselectiva como tratamiento de angiomiolipomas renales gigantes.

OBJECTIVE: Cases of giant renal angiomyolipoma (>9cm) are a therapeutic challenge due to their low frequency and large size. The treatment objective for patients with renal angiomyolipoma should be complete tumour extirpation, with a nephron-sparing surgical technique, without complications and using a minimally invasive approach. MATERIAL AND METHODS: We present 3 cases of giant angiomyolipoma (10 12 and 14cm) treated with a combined approach: superselective embolisation and subsequent laparoscopic partial nephrectomy, in 3 separate hospitals. RESULTS: None of the cases required conversion to open surgery. One of the 3 patients underwent arterial clamping, and none of the patients had complications. CONCLUSIONS: The combined approach provides a procedure with the criteria of minimal invasiveness, nephron sparing, little bleeding and reduced warm ischaemia time.

Prognostic factors for vesical relapse in patients with upper urothelium tumours treated with surgery. / Factores pronósticos de recidiva vesical en los pacientes con tumor de urotelio superior tratados con cirugía.

OBJECTIVE: To identify the prognostic factors for vesical relapse in patients with tumours of the upper urothelium treated with surgery. MATERIAL AND METHODS: We conducted a retrospective analysis of patients with tumours of the upper urothelium who underwent surgery between 1999 and 2011 at our centre (139 patients). We collected demographic, clinical, diagnostic and pathological variables, as well as the treatment, complications and progression. A descriptive analysis was performed using the chi-squared test for categorical variables and the ANOVA test for continuous variables. We also performed a univariate and multivariate analysis using the Cox proportional hazards model. Statistical significance was considered when P<.05. All calculations were performed with SPSS Statistics version 21. RESULTS: During the follow-up, 26.6% of the patients (37 cases) showed vesical relapse. Some 19.6% of the patients with no history of bladder tumours showed a bladder tumour relapse compared with 48.6% of the patients with a history of bladder tumours (P<.001). In the multivariate analysis, only the presence of bladder tumours prior to or concomitant with the upper urinary tract tumour diagnosis was identified as an independent predictor of bladder tumour relapse (P=.007). CONCLUSION: In our series, only the presence of a prior or synchronous bladder tumour behaved as an independent predictor of bladder tumour relapse in patients with tumours of the upper urothelium treated with surgery.

[Synchronous bilateral urothelial carcinoma of the upper urinary tract]. / Carcinoma urotelial ureteral bilateral sincrónico.

OBJECTIVE: Report a case of a synchronous bilateral urothelial carcinoma of the upper urinary tract without bladder affectation. METHODS: We describe the diagnosis and treatment of a case of a bilateral upper urothelial carcinoma. CONCLUSIONS: Synchronous bilateral urithelial carcinoma of the upper urinary tract without bladder affectation in an unusual occurance (1-5% of urothelial tumors) and radical surgery continues to be the treatment of choice, although it is possible to take a less aggressive approuch with selected groups of patient, in which we can achiese a survival rate similar to that which we obtain with radical surgery.

Residency in urology and training in kidney transplantation. Results of a national survey.

OBJECTIVES: To determine the current state of kidney transplantation (KT) training in a country that is leader in organ donation and transplantation. MATERIAL AND METHODS: We conducted an online survey by e-mail to 138 urology residents. The survey contained 5 sections: affiliation, training in KT, interest in KT, residents of transplant centers and residents of nontransplant centers. RESULTS: Sixty-five residents responded, 47.1% of the urologists in training surveyed, representing 28 cities and 15 provinces. Fifty-five percent (n=36) of the respondents deemed the KT training offered during their residency as insufficient, and 85% (n=55) demanded more resources. More than half were not confident in their abilities to perform transplantation surgery over the course of their residency (n=35). Nineteen percent of the residents considered KT an important discipline in their residency, with a mean score of 56.2 (1-100). Among the residents of the transplant centers (69.2%, n=45), 73% (n=33) considered KT when choosing a center for their residency. Of the surveyed residents from nontransplant centers (30.7%, n=20), 45% (n=9) do not perform an external rotation in KT. CONCLUSIONS: The surveyed residents demand more training in KT. The most common situation is to end a residency without having performed a complete KT. KT is considered an asset when selecting a resident medical intern position and commonly they are part of the transplantation team. The majority of residents are trained in centers with less than 75 transplants/year. External rotations in KT are not the rule in centers where transplantation is not performed.

Cirugía urológica funcional y SARS-CoV-2: cómo y por qué hay que retomar ya la actividad quirúrgica adaptados a la nueva realidad / Functional urology surgery and SARS-CoV-2: how and why surgical activity should be resumed now, adapting to the new reality

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Urology at the European university: adaptations to the Bologna Plan. The model of the Autonomous University of Madrid.

The fundamental objective of the Convergence Plan of Bologna is to normalize, harmonize and standardize the teaching of medicine in European medical schools by implementing a similar curriculum. This objective assumes the presence of Urology as a university discipline in all European medical schools. At the same time, the teaching techniques and subject distributions have been modified, emphasizing practical teaching and active participation of the student in the acquisition of expertise and skills. This approach enhances the curricular presence of Urology and requires increased dedication from the teaching staff. These staff members, with limited face-to-face and classroom time, must inform and educate medical students on the broad healthcare commitment of urology as a surgical/medical specialty. The adaptation of the numerous European medical schools to the Bologna Plan raises a number of problems that can be easily overcome, as can be seen in the plan designed by the Faculty of Medicine at the Universidad Autonoma de Madrid.

[Adequacy of urology departments in a health care model of hospitals network]. / Adecuación de Servicios de Urología en un Modelo Asistencial de Red de Hospitales.

UNLABELLED: The traditional health care model is currently facing new health requirements. The implementation of integrated urologic health systems can be one of the possible solutions to these needs. It is mandatory to explore a new health care model, which includes structural and organizational changes. The adequacy of the urology departments of IDCsalud-Madrid network hospitals, creating URORed, is a new system adaptable to constant changes, in order to offer professionalism and quality health care. OBJECTIVE: To describe the administrative/clinic management in the urology service of a health care model of Hospitals network (URORed at IDCsalud. Madrid), that has been included in a model of an Integrated network in a health care service. METHODS: In the period between November 2007 to October 2014, the urology departments of IDCsalud Madrid Group, have been included in a new organizational system, including 4 hospitals, currently with 27 urologists. Each center offers specific urologic services, sharing benefits and human resources. The same directive line leads all centers. RESULTS: The model offers an integrated and uniform urologic service to a specific population of 811.390 habitants (Population Census 2012), with capability to treat specific urologic diseases and to perform a correct clinical follow-up. CONCLUSIONS: Belonging to a health care model in network involves a change of attitude. It creates an organizational change, based on the processes and the results, which enables control of the management analytically, detecting the points that need to be optimized as well as those that are satisfactory. It implies developing a culture of learning and cooperation, so that the processes are fluent and have quality, to create clinical and technological projects in favor of new resource-generating research, based on the needs of the joint management of the hospitals network. The complexity of this model requires a work focused on the human resources, their concerns and their ability to coordinate actions to get results in terms of quality health care and professionalism.

[Urinary undiversion]. / Desderivacíon urinaria.

As a novel item we present a case of the reconversion of a Bricker-Wallace type external urinary bypass into vesical replacement according to Camey technique type II. 5 years after radical cystectomy and external urinary bypassing due to a malignant infiltrating vesical carcinoma and considering the patient's malignant pathology controlled, we have converted this bypass into a bladder replacement with detubulized ileum. Renal function is preserved by means of a ileo-ileal intussusception mechanism, achieving mictional physiology and maintaining both daytime and nocturnal continence, thanks to the integrity of the external sphincter. The major advances in reconstructive urological surgery in recent years have enabled us to make a fresh study of these patients with bypasses, as in fact many of them are going to be able to be reconstructed.