Estenosis de la anastomosis ureteroileal en derivaciones urinarias realizadas mediante abordaje abierto, laparoscópico y robótico. Incidencia y manejo en un centro de tercer nivel / Ureteroileal anastomosis stricture after urinary diversions performed by open, laparoscopic and robotic approaches. Incidence and management in a tertiary care center

Introducción Las estenosis de anastomosis ureteroileal son complicaciones frecuentes en conductos ileales y neovejigas ortotópicas. Analizamos su incidencia en función del tipo de derivación urinaria y del abordaje quirúrgico (abierto, laparoscópico o robótico). Describimos su manejo y los resultados obtenidos.Material y métodos Estudio retrospectivo descriptivo durante 6 años en pacientes con derivación urinaria empleando íleon (conducto ileal o neovejiga ileal). Se recogen datos demográficos, comorbilidades, datos quirúrgicos (abordaje, complicaciones) y resultados. Seguimiento mínimo de un año. Comparación entre grupos, mediante test de la chi al cuadrado en variables dicotómicas. Variables cuantitativas comparadas empleando la prueba de la t Student para grupos independientes o la prueba de Mann-Whitney. Consideramos significación estadística p<0,05.Resultados Incluimos a 182 pacientes (84% varones y 16% mujeres). Edad media 68 años. Abordaje de cistectomía: laparoscópica (67/37%), robótica (63/35%), abierta (43/24%). Tipo de derivación: conducto ileal (138/76%) y neovejiga ileal ortotópica (44/24%). Tipo de reimplante: Bricker (108/59%) y Wallace (47/26%). Estenosis de anastomosis ureteroileal (50/27%): bilateral (26), izquierda (16) y derecha (8). Estenosis según abordaje de cistectomía: laparoscópica (23/46%), robótica (16/32%), abierta (9/18%). Tratamiento de estenosis (33/18%): reimplante ureteroileal (13), nefrostomía permanente (13), dilatación endoscópica (4), nefroureterectomía (2), endoureterotomía (1). Abordaje del reimplante: laparoscópico (5/38%), robótico (6/46%) y abierto (2/15%). Resultados tras reimplantes: reestenosis (0/0%), reintervención (3/23%), estenosis ureteroileal contralateral posterior (1/8%).ConclusiónEl tipo de abordaje empleado en la cistectomía no parece influir en la aparición de estenosis ureteroileales. Abordajes laparoscópicos y robóticos permiten su reparación con resultados

Introduction Ureteroileal anastomosis stricture is a frequent complication after radical cystectomy and ileal conduit or orthotopic neobladder formation. We analyze their incidence based on the technique for urinary diversion and on the surgical approach (open, laparoscopic or robot-assisted). Stricture management is described, along with surgical outcomes.Material and methodsDescriptive retrospective study over 6 years in patients who underwent urinary diversion using ileum (ileal conduit or orthotopic neobladder). Demographic data, comorbidities, surgical approach, complications, and outcomes were collected. Minimum follow-up of 1 year. Comparison between groups using Chi-square test for dichotomous variables. Quantitative variables were compared using the Student's t test for independent groups or Mann-Whitney test. Statistical significance if P<.05.Results The study included 182 patients (84% males and 16% females). Mean age 68 years. Cystectomy approach: laparoscopic (67/37%), robot-assisted (63/35%), open (43/24%). Urinary diversion: ileal conduit (138/76%) and orthotopic ileal neobladder (44/24%). Ureteric reimplantation technique: Bricker (108/59%) and Wallace (47/26%). Ureteroileal anastomosis strictures (50/27%): bilateral (26), left (16) and right (8). Strictures according to cystectomy approach: laparoscopic (23/46%), robot-assisted (16/32%), open (9/18%). Treatment of strictures (33/18%): ureteric reimplantation (13), indwelling nephrostomy (13), endoscopic dilatation (4), nephroureterectomy (2), endoureterotomy (1). Ureteroileal reimplantation approach: laparoscopic (5/38%), robot-assisted (6/46%), open (2/15%). Outcomes after reimplantation: restenosis (0/0%), reintervention (3/23%), contralateral ureteroileal stricture (1/8%).Conclusion Surgical approach in cystectomy does not influence future development of ureteroileal strictures. Laparoscopic and robot-assisted ureteroileal reimplantation achieves high success rates (AU)

Ureteroileal anastomosis stricture after urinary diversions performed by open, laparoscopic and robotic approaches. Incidence and management in a tertiary care center.

INTRODUCTION: Ureteroileal anastomosis stricture is a frequent complication after radical cystectomy and ileal conduit or orthotopic neobladder formation. We analyze their incidence based on the technique for urinary diversion and on the surgical approach (open, laparoscopic or robot-assisted). Stricture management is described, along with surgical outcomes. MATERIAL AND METHODS: Descriptive retrospective study over 6 years in patients who underwent urinary diversion using ileum (ileal conduit or orthotopic neobladder). Demographic data, comorbidities, surgical approach, complications, and outcomes were collected. Minimum follow-up of 1 year. Comparison between groups using Chi-square test for dichotomous variables. Quantitative variables were compared using the Student's t-test for independent groups or Mann-Whitney test. Statistical significance if P < .05. RESULTS: The study included 182 patients (84% males and 16% females). Mean age 68 years. Cystectomy approach: laparoscopic (67/37%), robot-assisted (63/35%), open (43/24%). Urinary diversion: ileal conduit (138/76%) and orthotopic ileal neobladder (44/24%). Uretericre implantation technique: Bricker (108/59%) and Wallace (47/26%). Ureteroileal anastomosis strictures (50/27%): bilateral (26), left (16) and right (8). Strictures according to cystectomy approach: laparoscopic (23/46%), robot-assisted (16/32%), open (9/18%). Treatment of strictures (33/18%): ureteric reimplantation (13), indwelling nephrostomy (13), endoscopic dilatation (4), nephroureterectomy (2), endoureterotomy (1). Ureteroileal reimplantation approach: laparoscopic (5/38%), robot-assisted (6/46%), open (2/15%). Outcomes after reimplantation: restenosis (0/0%), reintervention (3/23%), contralateral ureteroileal stricture (1/8%). CONCLUSION: Surgical approach in cystectomy does not influence future development of ureteroileal strictures. Laparoscopic and robot-assisted ureteroileal reimplantation achieves high success rates.

Ureteroileal anastomosis stricture after urinary diversions performed by open, laparoscopic and robotic approaches. Incidence and management in a tertiary care center. / Estenosis de la anastomosis ureteroileal en derivaciones urinarias realizadas mediante abordaje abierto, laparoscópico y robótico. Incidencia y manejo en un centro de tercer nivel.

INTRODUCTION: Ureteroileal anastomosis stricture is a frequent complication after radical cystectomy and ileal conduit or orthotopic neobladder formation. We analyze their incidence based on the technique for urinary diversion and on the surgical approach (open, laparoscopic or robot-assisted). Stricture management is described, along with surgical outcomes. MATERIAL AND METHODS: Descriptive retrospective study over 6 years in patients who underwent urinary diversion using ileum (ileal conduit or orthotopic neobladder). Demographic data, comorbidities, surgical approach, complications, and outcomes were collected. Minimum follow-up of 1 year. Comparison between groups using Chi-square test for dichotomous variables. Quantitative variables were compared using the Student's t test for independent groups or Mann-Whitney test. Statistical significance if P<.05. RESULTS: The study included 182 patients (84% males and 16% females). Mean age 68 years. Cystectomy approach: laparoscopic (67/37%), robot-assisted (63/35%), open (43/24%). Urinary diversion: ileal conduit (138/76%) and orthotopic ileal neobladder (44/24%). Ureteric reimplantation technique: Bricker (108/59%) and Wallace (47/26%). Ureteroileal anastomosis strictures (50/27%): bilateral (26), left (16) and right (8). Strictures according to cystectomy approach: laparoscopic (23/46%), robot-assisted (16/32%), open (9/18%). Treatment of strictures (33/18%): ureteric reimplantation (13), indwelling nephrostomy (13), endoscopic dilatation (4), nephroureterectomy (2), endoureterotomy (1). Ureteroileal reimplantation approach: laparoscopic (5/38%), robot-assisted (6/46%), open (2/15%). Outcomes after reimplantation: restenosis (0/0%), reintervention (3/23%), contralateral ureteroileal stricture (1/8%). CONCLUSION: Surgical approach in cystectomy does not influence future development of ureteroileal strictures. Laparoscopic and robot-assisted ureteroileal reimplantation achieves high success rates.

Percutaneous radiofrequency for the treatment of small renal masses: Analysis of outcomes and complications after 10 years of experience. / Radiofrecuencia percutánea en el tratamiento de masas renales pequeñas: análisis de resultados y complicaciones tras diez años de experiencia.

INTRODUCTION AND OBJECTIVE: The management of renal tumors ≤ 4 cm in elderly population or patients with comorbidities is a challenge, for which ablative therapies are an interesting alternative. The objective is to evaluate in our center the role of percutaneous radiofrequency in the treatment of small renal masses, the associated complications and the results obtained. MATERIAL AND METHODS: Retrospective evaluation of the radiofrequency treatments carried out between April 2010 and April 2020 in our center. Demographic data, associated comorbidities, tumor characteristics, complications and oncological and functional outcomes were reviewed. RESULTS: Fifty-seven tumors were treated in 53 patients. Mean follow-up of 48.2 months. The percentage of complete ablations obtained was of 89.5%. There were 19.3% of complications. According to Clavien-Dindo and SIR classification systems, 3.5% and 5.3% were major complications. A statistically significant association was found between the initial result of ablation and age (p = 0.047), RENAL-m (p = 0.044), the presence of cystic component (p = 0.049) and tumor size (p = 0.01). The cut-off point for size was established at 25 mm (p = 0.012). In multivariate analysis, only size remained as a predictor of initial ablation result (p = 0.01; OR 1.183; CI 95% 1.041-1.345). Cancer-specific survival and 5-year recurrence-free survival were 98.1% and 89.5%, respectively. A mean decrease of MDRD-4 of 6.59 mL/min (p = 0.005) was observed in the first six months after RFA. CONCLUSIONS: Given the excellent oncological and functional results demonstrated, ultrasound-guided percutaneous radiofrequency ablation is an effective and safe treatment for small renal masses in selected patients.

Activity and short-term outcomes of kidney transplantation during the COVID-19 pandemic. / Actividad y resultados a corto plazo del trasplante renal durante la pandemia COVID-19.

INTRODUCTION: During the COVID-19 pandemic, the national transplant activity has been reduced due to the overload of the health system and concern for patient safety in this situation. The aim of our work is to expose the activity of kidney transplantation in Cantabria during the state of alarm, as well as to assess the safety of the transplantation program. MATERIAL AND METHODS: Retrospective study of kidney transplants performed in our Center from the beginning of the state of alarm until the beginning of the lockdown easing in Cantabria. Descriptive analysis of the demographic data of recipients and their donors, intraoperative data and postoperative outcomes. Comparative analysis with the data of the same period in 2017-2019, by means of the χ2 for categorical variables, Student's T and Mann-Whitney U tests in case of quantitative variables of normal and non-normal distribution, respectively. RESULTS: Fifteen kidney transplants were performed in the period described. Delayed renal function (DRF) was seen in 7.5% of patients, and 26.6% showed data of acute rejection; no patient presented COVID-19 disease. Comparative analysis showed a remarkable increase in the number of transplants in comparison with previous periods (15 vs 5.6), at the expense of donors from outside Cantabria (93.3%). We found no statistically significant differences in terms of cold ischemia time (p=0.77), DRF (p=0.73), need for dialysis (p=0.54), or appearance of post-surgical complications (p=0.61). CONCLUSIONS: The evolution of the pandemic in our region, and the adoption of strict protective measures has allowed the early and safe resumption of the renal transplantation program, increasing the number of transplants performed compared to previous years and maintaining comparable early post-operative results.

Initial experience with the new da Vinci single-port robot-assisted platform. / Experiencia inicial con la nueva plataforma de puerto único da Vinci robótico.

OBJECTIVE: To describe our experience in the first cases of urological surgeries performed with the da Vinci single-port robot-assisted platform. MATERIAL AND METHODS: We performed 5 single-port robot-assisted surgeries (R-LESS) between May and October 2014. We performed 3 ureteral reimplant surgeries, one ureteropyeloplasty in an inverted kidney and 1 partial nephrectomy. The perioperative and postoperative results were collected, as well as a report of the complications according to the Clavien classification system. RESULTS: Of the 5 procedures, 4 were performed completely by LESS, while 1 procedure was reconverted to multiport robot-assisted surgery. There were no intraoperative complications. We observed perioperative complications in 4 patients, all of which were grade 1 or 2. The mean surgical time was 262minutes (range, 230-300). DISCUSSION: In our initial experience with the da Vinci device, R-LESS surgery was feasible and safe. There are still a number of limitations in its use, which require new and improved R-LESS platforms.

How should we address the diagnosis of overactive bladder in women?

OBJECTIVE: Determine the degree of completion, agreement and diagnostic performance of various instruments for assessing the presence and intensity of urgency and other symptoms of idiopathic overactive bladder (OAB) and determine which is the best diagnostic combination. MATERIAL AND METHODS: Observational, noninterventional, cross-sectional multicentre study on 247 women aged 18 years or older, with a clinical diagnosis of OAB, evaluated in 55 functional urology and urodynamic units. The women completed the Patient Perception of Intensity of Urgency Scale questionnaire, an independent bladder control self-assessment questionnaire (B-SAQ), the Overactive Bladder Questionnaire Short-Form and a 3-day voiding diary (VD3d), and they underwent a urodynamic study (UDS). The degree of completion and agreement among the instruments was assessed using the Kappa index (95% CI) and Cramér's V. The diagnostic performance of each tool and their combination was studied using absolute frequencies of positive cases for each OAB symptom. RESULTS: The patients mean age was 57.66 years (SD, 13.43). There was a high degree of completion (>85%). The agreement among the instruments was poor or moderate, and there was no agreement with the UDS. The best combination of tools for the diagnosis of OAB in women was the B-SAQ and VD3d. CONCLUSIONS: The degree of completion of all instruments was high, the agreement between them was poor-moderate and not significant for the UDS. The instruments that had the best diagnostic performance for assessing urgency and other OAB symptoms, providing data on their severity and discomfort, were the B-SAQ and the VD3d.

Urology residents training in laparoscopic surgery. Development of a virtual reality model.

INTRODUCTION: The training and learning of residents in laparoscopic surgery has legal, financial and technological limitations. Simulation is an essential tool in the training of residents as a supplement to their training in laparoscopic surgery. The training should be structured in an appropriate environment, with previously established and clear objectives, taught by professionals with clinical and teaching experience in simulation. The training should be conducted with realistic models using animals and ex-vivo tissue from animals. It is essential to incorporate mechanisms to assess the objectives during the residents' training progress. OBJECTIVE: We present the training model for laparoscopic surgery for urology residents at the University Hospital Valdecilla. The training is conducted at the Virtual Hospital Valdecilla, which is associated with the Center for Medical Simulation in Boston and is accredited by the American College of Surgeons. MATERIAL AND METHOD: The model is designed in 3 blocks, basic for R1, intermediate for R2-3 and advanced for R4-5, with 9 training modules. The training is conducted in 4-hour sessions for 4 afternoons, for 3 weeks per year of residence. Residents therefore perform 240 hours of simulated laparoscopic training by the end of the course. For each module, we use structured objective assessments to measure each resident's training progress. RESULTS: Since 2003, 9 urology residents have been trained, in addition to the 5 who are currently in training. The model has undergone changes according to the needs expressed in the student feedback. The acquisition of skills in a virtual reality model has enabled the safe transfer of those skills to actual practice. CONCLUSIONS: A laparoscopic surgery training program designed in structured blocks and with progressive complexity provides appropriate training for transferring the skills acquired using this model to an actual scenario while maintaining patient safety.

Reparación de fístula urinaria en injerto renal mediante nefrectomía parcial y omentoplastia / Urinary Fistula Repair in a Renal Graft Throught a Partial Nephrectomy and Omentoplasty

Objetivos: Presentar el manejo mediante nefrectomía parcial e interposición del epiplón en casos de fístula urinaria en pacientes receptores de trasplante renal. Material y método: Presentamos un paciente con necrosis del polo inferior del injerto renal que afecta al sistema calicial, pero con la vascularización pieloureteral conservada, manejado de manera satisfactoria mediante nefrectomía parcial del segmento renal necrótico y sutura primaria del sistema colector con interposición del epiplón mayor. Realizamos una revisión de los casos de nefrectomía parcial en injerto renal descritos, analizando sus características y destacando la forma de presentación, los métodos diagnósticos, así como las técnicas quirúrgicas empleadas y sus resultados posteriores. Resultados: Existen pocos casos en la literatura contemporánea que describan un manejo quirúrgico conservador de las fístulas urinarias por necrosis segmentaria tras un injerto renal. El abordaje mediante nefrectomía parcial en estos casos presenta buen resultado en nuestra experiencia y en los casos descritos. Conclusiones: El manejo conservador de nefronas es factible y debería aplicarse en casos en los que la función renal previa y la cantidad de parénquima sano indiquen una correcta evolución posterior del injerto renal, a pesar de la evidente complejidad quirúrgica (AU)

Objectives: We present the management with partial nephrectomy and interposition of the greater omentum in case of urinary fistulas in renal allograft. Material and method: We present a patient with necrosis at the inferior pole of the renal graft that affected calyceal system but with pyeloureteral vascularization preserved. The patient’s condition was satisfactorily managed with a partial nephrectomy of the necrotic renal segment and primary suturing of the collecting system with interposition of the greater omentum. Were viewed the cases published to date of partial nephrectomy in renal allograft, and examined their outcomes by analyzing the patient presentation, diagnostic tools, and surgical techniques used. Results: There are few cases in the current literature that describe conservative surgical management of urinary fistulas caused by segmental necrosis after renal transplantation. Surgical approach using partial nephrectomy in these cases produces favorable outcomes in our experience and reported cases. Conclusions: Despite its obvious surgical complexity, this nephron-sparing management is feasible and should be implemented in cases where the prior renal function and the quantity of healthy parenchyma indicate a favorable subsequent evolution for the renal graft (AU)

Comparative study of morbidity and mortality between ileal conduit and ureterosigmoidostomy after radical cystectomy for bladder neoplasm.

OBJECTIVES: Despite the growing trend in the development of orthotopic neobladders, the procedure cannot be performed in many cases, thereby retaining the validity of other techniques. We propose a comparative analysis between patients with radical cystectomy for bladder neoplasm and reconstruction using the ileal conduit (IC) or ureterosigmoidostomy (USG). PATIENTS AND METHOD: Observational retrospective study on 255 patients with radical cystectomy between 1985 and 2009, selecting group assignments by the use of IC and USG. Analysis of the demographic and preoperative characteristics, perioperative complications, pathology and medium to long-term complications. Comparison of groups using T-Student, U-Mann-Whitney and chi square tests, with P<.05 indicating statistical significance. Preparation of survival tables according to Kaplan-Meier, establishing comparisons using the log-rank test. RESULTS: There were 41 cases of IC and 55 cases of USG, with a mean patient age of approximately 61 years. USGs were performed on a greater number of females than ICs. There were no differences in the need for transfusion, with similar results as other series. There was a greater trend towards the appearance of intestinal fistulae and greater morbidity and mortality in the postoperative period in USG, although it was not significant. There was a greater long-term presence of eventrations in IC, and of pyelonephritis and the need for taking alkalinizing agents in USG. The appearance of peristomal hernias in IC was less than in previous series. With a mean follow-up greater than 50 months, the overall survival was 40% at 5 years, with no differences according to urinary diversion. CONCLUSIONS: IC and USG are two applicable urinary diversions in the event that orthotopic neobladder surgery cannot be performed. They have a similar long-term complication and survival profile in our series, although with a higher morbidity in postoperative complications for USG.

Urinary fistula repair in a renal graft through a partial nephrectomy and omentoplasty.

OBJECTIVES: We present the management with partial nephrectomy and interposition of the greater omentum in case of urinary fistulas in renal allograft. MATERIAL AND METHOD: We present a patient with necrosis at the inferior pole of the renal graft that affected calyceal system but with pyeloureteral vascularization preserved. The patient's condition was satisfactorily managed with a partial nephrectomy of the necrotic renal segment and primary suturing of the collecting system with interposition of the greater omentum. We reviewed the cases published to date of partial nephrectomy in renal allograft, and examined their outcomes by analyzing the patient presentation, diagnostic tools, and surgical techniques used. RESULTS: There are few cases in the current literature that describe conservative surgical management of urinary fistulas caused by segmental necrosis after renal transplantation. Surgical approach using partial nephrectomy in these cases produces favorable outcomes in our experience and reported cases. CONCLUSIONS: Despite its obvious surgical complexity, this nephron-sparing management is feasible and should be implemented in cases where the prior renal function and the quantity of healthy parenchyma indicate a favorable subsequent evolution for the renal graft.

[Renal graft outcome in patients with combined heart-kidney transplantation]. / Trasplante cardio-renal. Evolucion del injerto renal.

INTRODUCTION: Improvement in surgical and organ preservation techniques and immunosuppressive therapy has permitted multiorganic transplants in patients needing both heart and kidney organs in a synchronous or asynchronous way. OBJECTIVES: To review our results in renal transplants in those patients with both heart and kidney transplants. MATERIAL AND METHOD: Retrospective study of the 7 patients with heart and kidney transplants performed in our Hospital. We have reviewed patients main characteristics, heart and renal failure causes, renal graft and patient outcome and complications related to renal transplant. RESULTS: Between 1985 and 2006 we performed 411 heart transplants; in 7 out of those 411 patients (1.7%) we performed 9 renal transplants, 2 simultaneously and 7 non-simultaneously. All patients were male; their average age at heart transplant was 51.3+/-12.2 years (24-60); the causes of the heart transplant were dilated myocardiopathy in 4 cases (57.2%), rheumatic cardiopathy in 1 (14.3%) and ischemic cardiopathy in 2 (28.5%). The average age at renal transplant was 57.5+/-11.2 years (32-68); the causes of the end renal failure were cyclosporine nephrotoxicity in 3 cases (33.3%), nephroangiosclerosis in 1 (11.1%), chronic interstitial nephropathy in 2 (22.2%), membranoproliferative glomerulonephritis in 1 (11.1%) and chronic rejection in 2 (22.2%). In the 2 simultaneous heart-kidney transplants cold ischemia was 4 hours long, immediate diuresis was seen in 1 case (50%) and there were no complications related to the kidney transplants. The time between the heart and kidney transplants in the 7 non-simultaneous heart-kidney transplants was 105.9+/-51.8 months (23-201 months), cold ischemia was 20.3+/-1.5 hours (18-22) and there was immediate diuresis in 5 cases (71.5%); 2 patients had no complications, 2 cases had acute renal rejection episodes, 1 case of perirenal haematoma, 1 renal polar infarction, lymphocele, 1 case of wound infection, 1 urinary infection and 2 pulmonary infections. Medium follow-up is 52.2+/-33.9 months (12-93); all patients are alive with functioning grafts with creatinine level of 1.8+/-0.43 mg/100 (1.4-2.4). Two renal grafts were lost due to chronic rejection 138 and 270 days after the kidney transplants. The immunotherapy was based on mycophenolate mofetil acid and tacrolimus, though it varied. CONCLUSIONS: The final renal failure associated to cardiopathies needing or having needed heart transplant does not preclude the transplants of both organs.

[Performance of antibiotic prophylaxis in our Urologic Department]. / Cumplimiento de profilaxis antibiótica en un Servicio de Urología.

INTRODUCTION: The rate of surgical site infection is a good indicator of the quality of care in surgical departments. Antibiotic prophylaxis represents a measure of proven efficiency in preventing the infection in a surgical site, and its fulfilment is a main goal in management contracts of health services. The efficiency of this preventive measure requires the existence of updated protocols and performance evaluation. OBJECTIVE: To evaluate the compliance of this antibiotic protocol in our Urology Department with the global analysis of the causes of inadequate prophylaxis and by procedures. MATERIAL AND METHODS: The Department of Preventive Medicine as an outside observer, through a retrospective study, analyzed 695 urological surgical procedures (inpatient and outpatient) during the years 2003 and 2006 for its annual assessment of compliance with the antibiotic prophylaxis protocol. Administration of non-indicated prophylaxis, non-administration of indicated prophylaxis and incorrect dosage are considered as inappropriate prophylaxis. RESULTS: The compliance of the protocol was appropriate in 83.16% of the operations. The cause of the most frequent inadequacy was an incorrect pattern in 15.3%. Within this incorrect pattern the main reason was the delay of administration of prophylactic antibiotic and to a lesser extent an incorrect length of the antibiotic regime. CONCLUSIONS: The percentage of compliance with the antibiotic protocol in our Urology Department is high. The evaluation detected two problems of a different nature and solution: to adapt the timing of antibiotics is a functional, structural and organizational problem to be resolved in accordance with the Anaesthesiology Department. The number of doses of antibiotics in open prostate surgery requires knowledge and strict adherence to the guidelines by the surgeons. The efficiency of antibiotic prophylaxis requires the existence of appropriated and updated protocols for the unifications of criteria among professionals to detect new problems as well as to find solutions for its adequate compliance.

[Multifocal renal cell carcinoma on renal allograft]. / Carcinoma de células renales multicéntrico en injerto renal.

Development of neoplasms after a renal transplantation is well known, but allograft neoplasms are uncommon. Diagnostics studies include routine ultrasonography, and CT. In some selective cases, if the graft is functionally salvageable and it is technically feasible, a nephron-sparing surgery should be performed. In any case, standard intervention is nephrectomy. We report a case of multifocal renal cell carcinoma diagnosed in a kidney grafted 17 years before.

[Emergency conservative surgery on a unique kidney with broken multiple angiomyolipoma]. / Cirugía conservadora de urgencia en monorrena por rotura de angiomiolipoma múltiple.

A case of retroperitoneal hemorrhage due to the rupture of a multiple angiomyolipoma in a female with a unique kidney is described. Hipovolemic shock was the first symptom, being possible to perform on her a successful conservative surgery. Etiology, diagnostic methods and treatment of the spontaneous retroperitoneal hemorrhage are discussed.

[Nosocomial infection and infection of the surgical site in a third level hospital (2002-2005)]. / Infección nosocomial y del sitio quirúrgico en un hospital de tercer nivel (2002-2005).

INTRODUCTION: Nosocomial infection rates constitute an indicator of welfare quality, permitting to adopt measures of prevention and control. It has been developed a surveillance plan of the nosocomial infection in hospitals, showing to be an efficient method to diminish its incident. OBJECTIVE: To know the indicators and characteristics of the nosocomial infection and of the infection of the site surgical particularly, in a urology service in a global form and by procedures. MATERIAL AND METHODS: Prospective study by means of the epidemiological surveillance system from 2002 to 2005 in 4.618 patients hospitalised at least 24 hours, with a total of 3.096 surgical. RESULTS: The overall incidence of nosocomial infection was 6,10%, 3.42% for urinary infection and 2,81% for the infection of the chirurgical site. For procedures, the incidence of the infection of the surgical site for cistectomy was 22,8%, 6,6% for surgery of kidney and ureter and 4,36% for open surgery of prostate. Eschericia Coli (43,6%) was the most frequently isolated organism, accounting for 43,6% of the causative organisms in the infection of the surgical site and 43,6% in the urinary infection. Pseudomonas aeruginosa is the next organism in frequency with a 15% in both infections. CONCLUSION: Our nosocomial infection rates are lower than the published standard values. The main infection rate of the surgical sites present in the most complex surgical techniques, whereas Escherichia Coli is the most frecuently isolated ethiological agent. The surveillance of the infection of the surgical site and related factors permit to incorporate improvements in the clinical-surgical practice which will be an indicator of reference in subsequent analysis.

Infección nosocomial y del sitio quirúrgico en un hospital de tercer nivel (2002-2005) / Nosocomial infection and infection of the surgical site in a third level hospital (2002-2005)

Introducción: La medida de las tasas de infección nosocomial constituye un indicador de calidad asistencial, permitiendo adoptar medidas de prevención y control. Se ha desarrollado un plan de vigilancia de infección nosocomial en los hospitales, demostrando ser un método eficaz para disminuir su incidencia. Objectivo: Conocer los indicadores y características de la infección nosocomial en general y de la infección del sitio quirúrgico en particular en un servicio de Urología de forma global y por procedimientos. Material y métodos: Estudio prospectivo mediante el sistema de vigilancia epidemiológica entre 2002-2005 en 4.618 pacientes ingresados al menos 24 horas, practicándose un total de 3.096 intervenciones. Resultados: Se observó una tasa global de infección nosocomial del 6.10%, de infección urinaria del 3,42% y de infección del sitio quirúrgico del 2,81%. De esta última por procedimientos, la cistectomía se sitúa en el 22,8%, seguido de la cirugía del riñón y uréter (6,6%) y de la cirugía abierta de próstata (4,36%). Los gérmenes más frecuentemente aislados en la infección del sitio quirúrgico son EScherichia Coli (43,6%) y Pseudomonas aeruginosa (15%). En la infección urinaria los gérmenes más frecuentes son Escherichia Coli (43,6%) y Pseudomonas aeruginosa (15%). Conclusión: Las tasas de infección nosocomial son inferiores a los valores estandares publicados. La mayor tasa de infección del sitio quirúrgico se presenta en las cirugías más complejas técnicamente, siendo Escherichia Coli, el agente etiológico más frecuente. La vigilancia de la infección del sitio quirúrgico y factores relacionados permiten incorporar elementos de mejora en la práctica clínico-quirúrgica, aportando un indicador de referencia en análisis posteriores

Introduction: Nosocomial infection rates constitute an indicator of welfare quality, permitting to adopt measures of prevention and control. It has been developed a surveillance plan of the nosocomial infection in hospitals, showing to be an efficient method to diminish its incident. Objective: To know the indicators and characteristics of the nosocomial infection and of the infection of the site surgical particularly, in a urology service in a global form and by procedures. Material and Methods: prospective study by means of the epidemiological surveillance system from 2002 to 2005 in 4.618 patients hospitalised at least 24 hours, with a total of 3.096 surgical. Results: The overall incidence of nosocomial infection was 6,10%, 3,42% for urinary infection and 2,81% for the infection of the chirurgicalsite. For procedures, the incidence of the infection of the surgical site for cistectomy was 22,8% 6,6% for surgery of kidney and ureter and 4,36% for open surgery of prostate. Escherichia Coli (43,6%) was the most frequently isolated organism, accounting for 43,6&% of the causative organisms in the infection of the surgical site and 43,6% in the urinary infection. Pseudomonas aeruginosa is the next organism in frecuency with a 15% in both infections. Conclusion: Our nosocomial infection rates are lower than the published standard values. The main infection rate of the surgical sites present in the most complex surgical techniques, whereas Escherichia Coli is the most frecuently isolated ethiological agent. The surveillance of the infection of the surgical site and related factors permit to incorporate improvements int he clinical-surgical practice which will be an indicator of reference in subsequent analysis

[Testicular epidermoid cyst: uncommon lesion of difficult preoperative diagnosis]. / Quiste epidermoide testicular: una rara entidad de dificil diagnostico preoperatorio.

Intratesticular epidermoid cysts are rare tumours that constitute one percent of all testicular masses. They are bening lesions that make differential diagnosis from malignant testicular tumours difficult. The absence of serum markers elevation and ultrasound imaging could support these lesions being bening epidermoid cysts, and in that case, conservative surgery is adequate. We present the case of a 22 years old patient who complains of a left testicular mass. In this case ultrasound diagnosis was non-specific and a left radical inguinal orchiectomy was performed.