A new surgical technique for sutureless partial nephrectomy: renal sutureless device.

BACKGROUND: Several factors impact the preservation of renal function after partial nephrectomy. Warm ischemia time is the main modifiable surgical factor. Renorrhaphy represents the key of hemostasia, but it is associated with increase of warm ischemia time and complications. The aim of this study was to describe our initial surgical experience with a new surgical technique for sutureless partial nephrectomy, based on the application of our own developed renal-sutureless-device-RSD. METHODS: Between 2020-2021, 10 patients diagnosed with renal cell carcinoma stage cT1a-b cN0M0 with an exophytic component were operated using renal-sutureless-device-RSD. Surgical technique of sutureless partial nephrectomy with renal-sutureless-device-RSD is described in a step-by-step fashion. Clinical data was collected in a dedicated database. Presurgical, intraoperative, postoperative variables, pathology and functional results were evaluated. Medians and ranges of values for selected variables were reported as descriptive statistics. RESULTS: Partial nephrectomy was carried out with the use of renal-sutureless-device-RSD without renorrhaphy in all cases (70%cT1a-30%cT1b). Median tumor size was 3.15 cm (IQR: 2.5-4.5). R.E.N.A.L Score had a range between 4a-10. Median surgical time was 97.5 minutes (IQR 75-105). Renal artery clamping was only required in 4 cases, with a median warm ischemia time of 12.5 minutes (IQR 10-15). No blood transfusion, intraoperative and postoperative complications were noted. Free-of-disease margin rate achieved was 90%. Median length of stay was 2 days (IQR 2-2). Laboratory data on hemoglobin and hematocrit levels, as well as renal function tests, remained stable after partial nephrectomy. CONCLUSIONS: Our initial experience suggests that a sutureless PN using the RSD device is feasible and safe. Further investigation is needed to determine the clinical benefit of this technique.

Minimally Invasive Laparoscopic Technique for Lymph Node Dissection in Penile Cancer: The Pelvic and Inguinal Single-Site Approach: PISA Technique.

BACKGROUND: Lymph node dissection(LND) remains the gold standard in the staging and treatment of locally advanced penile cancer(PC)1. OBJECTIVE: To describe our initial experience with a new minimally invasive inguinal and pelvic single-access laparoscopic approach2,for performing LND in PC, first described in Urology by our group in 20153: the Pelvic and Inguinal Single Access(PISA) technique (Fig. 1). MATERIAL: Between 2015 and 2018, 10 consecutive patients with different PC stages and indication of inguinal LND (cN0 and ≥pT1G3 or cN1/cN2)1 were operated by means of the PISA technique (Table 1). Intraoperative frozen section(FS)4 analysis was carried out routinely and if ≥2 inguinal nodes(pN2) or extracapsular nodal extension(pN3) are detected1,5, ipsilateral pelvic LND was performed sequentially as a single-stage procedure and using the same surgical incisions. If this condition occurs bilaterally in the inguinal LND, the pelvic LND will be bilateral. The video shows the PISA technique in a step-by-step. Instrumental requirements: 30°laparoscopy optic, monopolar scissors,Ligasure (Covidien Surgical,Minneapolis,MN,USA) vascular sealant, extraction-bag, bipolar forceps and 5-mm endo-clip(Hem-o-lok)are required. RESULTS: Intraoperative and postsurgical variables are shown in Table 2. Inguinal LND was bilateral in all cases. Pelvic LND was required in 40% of patients. Total operative time was 120-170 minutes. Median estimated blood loss(EBL) was 66(30-100)cc, but no blood transfusion was required. No intraoperative complications were noted. 40% of patients had postoperative complications (10% major complication- symptomatic inguinal lymphocele). Median lenght of hospital stay(LOS)was 5.8(3-10) days. Median inguinal drain removal was 4.7 days. The pathological analysis outcomes are shown in Table 3. Mean number of lymph nodes removed by inguinal LND was 10.25(8-14). CONCLUSION: PISA technique allow a minimally invasive inguinal and pelvic LND using the same set of incisions and carry it out in the same surgical procedure. PISA technique in PC LND seems to be safe, with a low rate of major complications and preserving oncological efficacy.

[Penile metastasis from urothelial carcinoma: Review of literature.] / Metástasis peneana de carcinoma urotelial: revisión de la literatura a raíz de un caso.

OBJECTIVE: Penile metastasis is a very rare clinical entity. The primary origin is usually genitourinar y followed by the gastrointestinal. MATERIAL AND METHODS: Review of the available literature on a case of penile metastasis of urothelial bladder carcinoma. RESULTS: Penile metastasis is an exceptional entity despite the rich vascularization of this organ. Less than 500 cases have been described. Most cases manifestas exophytic or nodular lesions. Its association with disseminated disease conditions its palliative management in a large part of the cases, as well as an unfavorable prognosis. In selected cases, surgical treatment can be chosen. CONCLUSIONS: Since its clinical presentation is variable, clinical suspicion is important in the presence of a skin lesion of torpid evolution taking into account the patient's oncological history.

OBJETIVO: La metástasis peneana es una entidad clínica muy poco frecuente. El origen primario suele ser genitourinario seguido del gastrointestinal. MATERIAL Y MÉTODOS: Revisión de la literatura disponible a propósito de un caso de metástasis peneana de carcinoma urotelial de vejiga. RESULTADOS: La metástasis peneana es una entidad excepcional a pesar de la rica vascularización de este órgano. Se han descrito menos de 500 casos hasta  la fecha. La mayor parte de los casos se manifiestan como lesiones exofíticas o nodulares. Su asociación a enfermedad diseminada, condiciona su manejo paliativo en gran parte de los casos, así como un pronóstico desfavorable. En casos seleccionados puede optarse por tratamiento quirúrgico. CONCLUSIONES: Dado que su presentación clínica es variable, es importante la sospecha clínica ante la presencia de una lesión cutánea de evolución tórpida teniendo en cuenta los antecedentes oncológicos del paciente.

Metástasis peneana de carcinoma urotelial: revisión de la literatura a raíz de un caso / Penile metastasis from urothelial carcinoma: Review of literature

OBJETIVO: La metástasis peneana es una entidad clínica muy poco frecuente. El origen primario suele ser genitourinario seguido del gastrointestinal. MATERIAL Y MÉTODOS: Revisión de la literatura disponible a propósito de un caso de metástasis peneana de carcinoma urotelial de vejiga. RESULTADOS: La metástasis peneana es una entidad excepcional a pesar de la rica vascularización de este órgano. Se han descrito menos de 500 casos hasta la fecha. La mayor parte de los casos se manifiestan como lesiones exofíticas o nodulares. Su asociación a enfermedad diseminada, condiciona su manejo paliativo en gran parte de los casos, así como un pronóstico desfavorable. En casos seleccionados puede optarse por tratamiento quirúrgico. CONCLUSIONES: Dado que su presentación clínica es variable, es importante la sospecha clínica ante la presencia de una lesión cutánea de evolución tórpida teniendo en cuenta los antecedentes oncológicos del paciente

OBJECTIVE: Penile metastasis is a very rare clinical entity. The primary origin is usually genitourinary followed by the gastrointestinal. MATERIAL AND METHODS: Review of the available literature on a case of penile metastasis of urothelial bladder carcinoma. RESULTS: Penile metastasis is an exceptional entity despite the rich vascularization of this organ. Less than 500 cases have been described. Most cases manifest as exophytic or nodular lesions. Its association with disseminated disease conditions its palliative management in a large part of the cases, as well as an unfavorable prognosis. In selected cases, surgical treatment can be chosen. CONCLUSIONS: Since its clinical presentation is variable, clinical suspicion is important in the presence of a skin lesion of torpid evolution taking into account the patient’s oncological history

[Effect of surgical approach on radical nephrectomy outcomes: Comparative study between open and laparoscopic nephrectomy.] / Influencia de la vía de acceso para la nefrectomía radical en el tratamiento del cáncer renal: estudio comparativo entre cirugía abierta y cirugía laparoscópica.

OBJECTIVE: The aim of this study is to evaluate the influence of laparoscopy in patients with renal cancer treated with radical nephrectomy in terms of surgical time, hospital stay, postoperative complications and survival.MATERIAL AND METHODS: Retrospective study of 570 patients with renal cancer treated with radical nephrectomyin stage ≤pT3a. Differences between groups were analysed using ANOVA test for quantitative variables and Chi squared test for qualitative. In order to evaluate possible risk factors for longer hospital stay and surgical time, multivariate analysis was performed (lineal regression). For complications we performed binary logistic regression. Overall survival (OS), recurrence free survival (RFS) and cancer specific survival (CSS) were estimated using Kaplan Meier and compared using Log Rank test. Univariate and multivariate analysis was performed using Cox regression in order to identify independent risk factors for overall, cancer specific and recurrence mortality. RESULTS: Two cohorts: 361 (63.3%) open radical nephrectomies (ORN) and 209 (36.7%) laparoscopic (LRN). Surgical time was longer in LRN (p=0.001) globally. After the period when the learning curve was over these differences were no longer significant. Hospital stay was shorter in LRN (p=0.0001). cT stage (p=0.005) and surgical access (p=0.001) acted as independent risk factors for longer surgical time. 33,5% (121 patients) of the ORN had some sort of postoperative complication vs. 11% (23 patients) in the LRN group (p=0.0001). These differences were observed in the Clavien-Dindo's grade II group. Independent risk factors for postoperative complications observed were: ASA≥III (OR=1.82, p=0.004) and stage pT3a (OR=2.29,p=0.0001). Laparoscopy acted as a protective factor for complications (OR=0,26, p=0.0001). Surgical access did not influence RFS (HR=0.87, p=0.50), CSS(HR=0.69, p=0.12). CONCLUSIONS: Laparoscopic access to RN in patients with renal cancer in ≤pT3a stage increased surgical time only in the first years, reduced hospital stayand postoperative complications and did not influence RFS, OS or CSS.

OBJETIVO: El objetivo del estudio es evaluarla influencia de la laparoscopia en pacientes concáncer renal tratados con nefrectomía radical (NR) en términos de tiempo quirúrgico, estancia media, complicaciones postoperatorias y supervivencia.MATERIAL Y MÉTODO: Análisis retrospectivo de 570 pacientes con cáncer renal tratados con NR en estadio ≤pT3a comparando cohorte de acceso abierto (NRA) y laparoscópico (NRL). Contraste de variables cualitativas con el test de Chi cuadrado y cuantitativas con ANOVA. Para identificar factores de riesgo (FR) de tiempo quirúrgico y estancia media se utilizó regresión lineal multivariante y para complicaciones la regresión logística binaria. Estimación de la supervivencia libre de recidiva (SLR), global (SG) y cáncer específica (SCE) mediante Kaplan-Meier y test de log-rank para analizar las diferencias. Análisis multivariante mediante regresión de Cox para identificar variables predictoras independientes (VPI) de SLR y SCE. Todos los cálculos se han realizado con el paquete estadístico IBM® SPSS® statisticsv-21. RESULTADOS: Dos cohortes: 361 (63,3%) NRA y 209(36,7%) NRL. El tiempo de cirugía fue mayor en NRL (p=0,001) de forma global siendo las diferencias entre ambas en el periodo tras la curva de aprendizaje no significativas. La estancia media fue menor en NRL(p=0,0001). El estadio cT (p=0,005) y la vía de acceso (p=0,001) se comportaron como VPI de prolongación del tiempo quirúrgico. El 33,5% (121 casos) de las NRA presentaron algún tipo de complicación en el postoperatorio, frente al 11% (23 casos) de las NRL (p=0,0001). Esta diferencia se observó en complicaciones tipo II de Clavien. VPI de complicaciones postoperatorias: ASA≥III (OR=1,82, p=0,004) y el estadio pT3a (OR=2,29, p=0,0001). La laparoscopia se comportó como factor protector de complicaciones (OR=0,26, p=0,0001). La vía de acceso no influyó en la SLR (HR=0,87, p=0,50) ni en la SCE (HR=0,69,p=0,12). CONCLUSIONES: El acceso laparoscópico a la nefrectomía radical en pacientes con cáncer renal en estadio ≤pT3a aumentó el tiempo quirúrgico pero solo en los primeros años, presentó menor estancia y complicacionespostoperatorias y no influyó en la SG,SLR y SCE.

Influencia de la vía de acceso para la nefrectomía radical en el tratamiento del cáncer renal: estudio comparativo entre cirugía abierta y cirugía laparoscópica / Effect of surgical approach on radical nephrectomy outcomes: Comparative study between open and laparoscopic nephrectomy

OBJETIVO: El objetivo del estudio es evaluarla influencia de la laparoscopia en pacientes concáncer renal tratados con nefrectomía radical (NR) en términos de tiempo quirúrgico, estancia media, complicaciones postoperatorias y supervivencia. MATERIAL Y MÉTODO: Análisis retrospectivo de 570 pacientes con cáncer renal tratados con NR en estadio ≤ pT3a comparando cohorte de acceso abierto (NRA) y laparoscópico (NRL). Contraste de variables cualitativas con el test de Chi cuadrado y cuantitativas con ANOVA. Para identificar factores de riesgo (FR) de tiempo quirúrgico y estancia media se utilizó regresión lineal multivariante y para complicaciones la regresión logística binaria. Estimación de la supervivencia libre de recidiva (SLR), global (SG) y cáncer específica (SCE) mediante Kaplan-Meier y test de log-rank para analizar las diferencias. Análisis multivariante mediante regresión de Cox para identificar variables predictoras independientes (VPI) de SLR y SCE. Todos los cálculos se han realizado con el paquete estadístico IBM® SPSS® statisticsv-21. RESULTADOS: Dos cohortes: 361 (63,3%) NRA y 209(36,7%) NRL. El tiempo de cirugía fue mayor en NRL (p = 0,001) de forma global siendo las diferencias entre ambas en el periodo tras la curva de aprendizaje no significativas. La estancia media fue menor en NRL(p = 0,0001). El estadio cT (p = 0,005) y la vía de acceso (p = 0,001) se comportaron como VPI de prolongación del tiempo quirúrgico. El 33,5% (121 casos) de las NRA presentaron algún tipo de complicación en el postoperatorio, frente al 11% (23 casos) de las NRL (p = 0,0001). Esta diferencia se observó en complicaciones tipo II de Clavien. VPI de complicaciones postoperatorias: ASA ≥ III (OR=1,82, p = 0,004) y el estadio pT3a (OR=2,29, p = 0,0001). La laparoscopia se comportó como factor protector de complicaciones (OR=0,26, p = 0,0001). La vía de acceso no influyó en la SLR (HR=0,87, p = 0,50) ni en la SCE (HR = 0,69, p = 0,12). CONCLUSIONES: El acceso laparoscópico a la nefrectomía radical en pacientes con cáncer renal en estadio ≤ pT3a aumentó el tiempo quirúrgico pero solo en los primeros años, presentó menor estancia y complicaciones postoperatorias y no influyó en la SG,SLR y SCE

OBJECTIVE: The aim of this study is to evaluate the influence of laparoscopy in patients with renal cancer treated with radical nephrectomy in terms of surgical time, hospital stay, postoperative complications and survival. MATERIAL AND METHODS: Retrospective study of 570 patients with renal cancer treated with radical nephrectomy in stage ≤pT3a. Differences between groups were analysed using ANOVA test for quantitative variables and Chi squared test for qualitative. In order to evaluate possible risk factors for longer hospital stay and surgical time, multivariate analysis was performed (lineal regression). For complications we performed binary logistic regression. Overall survival (OS), recurrence free survival (RFS) and cancer specific survival (CSS) were estimated using Kaplan Meier and compared using Log Rank test. Univariate and multivariate analysis was performed using Cox regression in order to identify independent risk factors for overall, cancer specific and recurrence mortality. RESULTS: Two cohorts: 361 (63.3%) open radical nephrectomies (ORN) and 209 (36.7%) laparoscopic (LRN). Surgical time was longer in LRN (p=0.001) globally. After the period when the learning curve was over these differences were no longer significant. Hospital stay was shorter in LRN (p=0.0001). cT stage (p=0.005) and surgical access (p=0.001) acted as independent risk factors for longer surgical time. 33,5% (121 patients) of the ORN had some sort of postoperative complication vs. 11% (23 patients) in the LRN group (p=0.0001). These differences were observed in the Clavien-Dindo’s grade II group. Independent risk factors for postoperative complications observed were: ASA≥III (OR=1.82, p=0.004) and stage pT3a (OR=2.29, p=0.0001). Laparoscopy acted as a protective factor for complications (OR=0,26, p=0.0001). Surgical Access did not influence RFS (HR=0.87, p=0.50), CSS (HR=0.69, p=0.12). CONCLUSIONS: Laparoscopic access to RN in patients with renal cancer in ≤pT3a stage increased surgical time only in the first years, reduced hospital stay and postoperative complications and did not influence RFS, OS or CSS

[Prognostic factors of mortality in patients with urothelial bladder tumor treated with radical cistectomy.] / Factores pronósticos de mortalidad en pacientes con tumor urotelial de vejiga tratados con cistectomía radical.

INTRODUCTION: Radical cystectomy (RC) with pelvic lymphadenectomy is the treatment of choice in patients with muscle invasive bladder cancer (MIBC). OBJECTIVE: To identify clinical and pathological variables that influence global mortality (GM) and cancer specific mortality (CSM) in patients with urothelial bladder tumor (UBT) treated with RC. METHODS: Retrospective analysis of 517 patients diagnosed with UBT and treated with RC between 1986 and 2009. Demographic, clinical, surgical and pathological variables, as well as complications and evolution after RC were collected. A comparative analysis was carried out with Chi square and ANOVA test. Survival analysis was performed with the Kaplan-Meier method and the long-rank test. Univariate and multivariate analysis were performed using Cox regression to identify independent predictors of GM and CSM. RESULTS: 91% of the patients were males with a median age of 66 years. The most frequent local pathological stage was pT3 (32.6%), with lymph node involvement in 23.8% of the patients. After a median follow-up of 34 months, 170 patients were alive and 311 had died from any cause (63.5%), being UBT the cause of death in 225 patients (45%). Rates of global survival and cancer specific survival at 5 and 10 years were 45%/34.3% and 52.5%/46.6% respectively. On the multivariate analysis age ( p = 0.004), ASA ( p = 0.000), the existence of hydronephrosis ( p = 0.01), pT ( p = 0.000) and pN ( p = 0.003) were identified as independent predictors of GM, as well as pT ( p = 0.000) and pN ( p = 0.002) for CSM. CONCLUSIONS: Age, anesthetic risk, presence of hydronephrosis, pT and pN stage were identified as independent predictors of GM, as well as pT and pN stage for CSM.

INTRODUCCIÓN: La cistectomía radical (CR) con linfadenectomía pélvica es el tratamiento de elección en los pacientes con tumor vesical músculoinfiltrante (TVMI). OBJETIVO: Identificar variables clínicas y patológicas que influyen en la mortalidad global (MG) y cáncer-específica (MCE) en pacientes con tumor urotelial vesical (TUV) tratados con CR. MATERIAL Y MÉTODOS: Análisis retrospectivo de 517 pacientes diagnosticados de TUV y tratados con CR entre 1986 y 2009. Se recogieron variables demográficas, clínicas, quirúrgicas y patológicas, así como complicaciones acontecidas y evolución tras CR. Análisis comparativo con test de Chi Cuadrado y ANOVA. Cálculo de supervivencia con el método de Kaplan-Meier y test de long-rank. Análisis univariante y multivariante mediante regresión de Cox para identificar variables predictoras independientes de MG y MCE. RESULTADOS: El 91% de los pacientes fueron varones con mediana de edad de 66 años. El estadio patológico local más frecuente fue el pT3 (32,6%), con afectación ganglionar en el 23,8% de los pacientes. Tras mediana de seguimiento de 34 meses, 170 pacientes estaban vivos y 311 habían fallecido por cualquier causa (63,5%), siendo el TUV la causa de muerte en 225 pacientes (45%). Se objetivaron tasas de supervivencia global y cáncer específica a 5 y 10 años del 45/34,3% y del 52,5/46,6% respectivamente. En el análisis multivariante se identificaron la edad ( p = 0,004), el ASA ( p = 0,000), la existencia de hidronefrosis ( p = 0,01), el pT ( p = 0,000) y el pN ( p = 0,003) como variables predictoras independientes de MG, así como el pT ( p = 0,000) y pN ( p = 0,002) para MCE. CONCLUSIONES: La edad, el riesgo anestésico, la presencia de hidronefrosis, el estadio pT y pN se identificaron como variables predictoras independientes de MG, así como el estadio pT y pN para MCE.

Factores pronósticos de mortalidad en pacientes con tumor urotelial de vejiga tratados con cistectomía radical / Prognostic factors of mortality in patients with urothelial bladder tumor treated with radical cistectomy

Introducción: La cistectomía radical (CR) con linfadenectomía pélvica es el tratamiento de elección en los pacientes con tumor vesical músculoinfiltrante (TVMI). Objetivo: Identificar variables clínicas y patológicas que influyen en la mortalidad global (MG) y cáncer-específica (MCE) en pacientes con tumor urotelial vesical (TUV) tratados con CR. Material y métodos: Análisis retrospectivo de 517 pacientes diagnosticados de TUV y tratados con CR entre 1986 y 2009. Se recogieron variables demográficas, clínicas, quirúrgicas y patológicas, así como complicaciones acontecidas y evolución tras CR. Análisis comparativo con test de Chi Cuadrado y ANOVA. Cálculo de supervivencia con el método de Kaplan-Meier y test de long-rank. Análisis univariante y multivariante mediante regresión de Cox para identificar variables predictoras independientes de MG y MCE. Resultados: El 91% de los pacientes fueron varones con mediana de edad de 66 años. El estadio patológico local más frecuente fue el pT3 (32,6%), con afectación ganglionar en el 23,8% de los pacientes. Tras mediana de seguimiento de 34 meses, 170 pacientes estaban vivos y 311 habían fallecido por cualquier causa (63,5%), siendo el TUV la causa de muerte en 225 pacientes (45%). Se objetivaron tasas de supervivencia global y cáncer específica a 5 y 10 años del 45/34,3% y del 52,5/46,6% respectivamente. En el análisis multivariante se identificaron la edad ( p = 0,004), el ASA ( p = 0,000), la existencia de hidronefrosis ( p = 0,01), el pT ( p = 0,000) y el pN ( p = 0,003) como variables predictoras independientes de MG, así como el pT ( p = 0,000) y pN ( p = 0,002) para MCE. Conclusiones: La edad, el riesgo anestésico, la presencia de hidronefrosis, el estadio pT y pN se identificaron como variables predictoras independientes de MG, así como el estadio pT y pN para MCE

Introduction: Radical cystectomy (RC) with pelvic lymphadenectomy is the treatment of choice in patients with muscle invasive bladder cancer (MIBC). Objective: To identify clinical and pathological variables that influence global mortality (GM) and cancer specific mortality (CSM) in patients with urothelial bladder tumor (UBT) treated with RC. Methods: Retrospective analysis of 517 patients diagnosed with UBT and treated with RC between 1986 and 2009. Demographic, clinical, surgical and pathological variables, as well as complications and evolution after RC were collected. A comparative analysis was carried out with Chi square and ANOVA test. Survival analysis was performed with the Kaplan-Meier method and the long-rank test. Univariate and multivariate analysis were performed using Cox regression to identify independent predictors of GM and CSM. Results: 91% of the patients were males with a median age of 66 years. The most frequent local pathological stage was pT3 (32.6%), with lymph node involvement in 23.8% of the patients. After a median follow-up of 34 months, 170 patients were alive and 311 had died from any cause (63.5%), being UBT the cause of death in 225 patients (45%). Rates of global survival and cancer specific survival at 5 and 10 years were 45%/34.3% and 52.5%/46.6% respectively. On the multivariate analysis age (p=0.004), ASA (p=0.000), the existence of hydronephrosis (p=0.01), pT (p=0.000) and pN (p=0.003) were identified as independent predictors of GM, as well as pT (p=0.000) and pN (p=0.002) for CSM. Conclusions: Age, anesthetic risk, presence of hydronephrosis, pT and pN stage were identified as independent predictors of GM, as well as pT and pN stage for CSM

[Laparoscopic treatment of retroperitoneal fibrosis.] / Tratamiento laparoscopico de la fibrosis retroperitoneal.

OBJECTIVES: Retroperitoneal fibrosis is a disease that may condition a severe involvement of various organs, mainly upper urinary tract, even causing renal insufficiency. It was first described by Albarran in 1905 and it is also known as Ormonds disease. The correct diagnosis includes, in many cases, the performance of one or more tests: CT scan, MRI, renal scan, etc. It is often necessary the insertion of double J catheters on percutaneous nephrostomy tubes with the aim to preserve renal function. Initial treatment is medical, based on corticoids, and , less frequent, immunosuppressive or chemotherapy drugs. Surgery is the treatment of choice when ureteral entrapment by the fibrous plaque is not solved with medical treatment. Such operation may be performed with a conventional open approach (laparotomy) or by pure, hand assisted laparoscopic surgery, or robotic surgery. In all cases, the technique involves freeing the ureters from the fibrous plaque that entraps them, leaving them intraperitoneal, and it is recommendable to wrap them with an omental flap. The implantation of minimally invasive techniques has made that, in groups with experience in laparoscopy, open surgery is being abandoned and the laparoscopic approach indication is increasing. Our group has performed 10 laparoscopic ureterolysis from 2005. In two patients, it was bilateral. Despite surgical repair, two renal units were lost, keeping the rest with different levels of renal function depending on the preoperative level of disease. We did not have major complications and the mean hospital stay was 5.5 days. Although, there is not important published scientific evidence about this technique and it is unlikely we will have it in an immediate future, due to the rarity of this disease, and the different degree of involvement that conditions. It is not unreasonable to propose that, based on the literature reviewed and our own experience, laparoscopic approaches, despite being complex, may solve the ureteral entrapment with similar results to open surgery but less morbidity and shorter hospital stay.

Tratamiento laparoscopico de la fibrosis retroperitoneal / Laparoscopic treatment of retroperitoneal fibrosis

OBJETIVOS: La fibrosis retroperitoneal es una enfermedad que puede condicionar una afectación severa de distintos órganos, fundamentalmente del aparato urinario superior, pudiendo llegar incluso a ser la causa de una insuficiencia renal. Fue descrita por Albarrán en 1905 y se le conoce también como enfermedad de Ormond. El diagnóstico correcto que incluye, en muchos de los casos, la realización de una o varias pruebas: TAC (tomografía axial computarizada), RNM (resonancia nuclear magnética), gammagrafía renal, etc, obliga con relativa frecuencia, a la colocación de catéteres doble J o nefrostomías percutáneas con el fin de preservar la función de los riñones. El tratamiento inicial es médico, basado en la utilización de corticoides y, con menos frecuencia inmunosupresores o quimioterápicos. La cirugía es el tratamiento de elección cuando el atrapamiento ureteral por la placa fibrosa no queda resuelto con el tratamiento médico indicado en cada paciente. Dicha cirugía puede hacerse mediante un abordaje convencional (laparotomía) o mediante cirugía laparoscópica pura, manoasistida o robótica. En todos los casos la técnica consiste en liberar el o los uréteres de la placa fibrosa que los atrapa, dejarlos situados a nivel intraperitoneal y es recomendable utilizar un manguito de epiplon para envolverlos. La implantación cada vez mayor de las técnicas menos invasivas ha hecho que, en los grupos con experiencia laparoscópica, se vaya abandonando la cirugía abierta y sea cada vez más frecuente la indicación del abordaje laparoscópico. Nuestro grupo ha realizado 10 ureterolisis laparoscópicas desde el año 2005 en el que la indicamos por primera vez. En dos pacientes la técnica se realizó en los dos uréteres a la vez. Se perdieron, a pesar de la cirugía, dos unidades renales, manteniéndose el resto con distintos niveles de función renal dependiendo del grado de afectación que presentaban previamente. No tuvimos complicaciones mayores siendo la estancia media hospitalaria de 5,5 días. Aunque la literatura actual no tiene publicaciones sobre estas técnicas con importante evidencia científica y, por la rareza de la enfermedad y el distinto nivel de afectación que condiciona, es poco probable que las tengamos en un futuro inmediato, no es descabellado plantear, en base a la literatura revisada y a nuestra propia experiencia que, aunque complejos, los abordajes laparoscópicos pueden solucionar el atrapamiento ureteral con resultados similares a la cirugía abierta pero con menor morbilidad y menor estancia hospitalaria

OBJECTIVES: Retroperitoneal fibrosis is a disease that may condition a severe involvement of various organs, mainly upper urinary tract, even causing renal insufficiency. It was first described by Albarran in 1905 and it is also known as Ormonds disease. The correct diagnosis includes, in many cases, the performance of one or more tests: CT scan, MRI, renal scan, etc. It is often necessary the insertion of double J catheters on percutaneous nephrostomy tubes with the aim to preserve renal function. Initial treatment is medical, based on corticoids, and, less frequent, immunosuppressive or chemotherapy drugs. Surgery is the treatment of choice when ureteral entrapment by the fibrous plaque is not solved with medical treatment. Such operation may be performed with a conventional open approach (laparotomy) or by pure, hand assisted laparoscopic surgery, or robotic surgery. In all cases, the technique involves freeing the ureters from the fibrous plaque that entraps them, leaving them intraperitoneal, and it is recommendable to wrap them with an omental flap. The implantation of minimally invasive techniques has made that, in groups with experience in laparoscopy, open surgery is being abandoned and the laparoscopic approach indication is increasing. Our group has performed 10 laparoscopic ureterolysis from 2005. In two patients, it was bilateral. Despite surgical repair, two renal units were lost, keeping the rest with different levels of renal function depending on the preoperative level of disease. We did not have major complications and the mean hospital stay was 5.5 days. Although, there is not important published scientific evidence about this technique and it is unlikely we will have it in an immediate future, due to the rarity of this disease, and the different degree of involvement that conditions,. It is not unreasonable to propose that, based on the literature reviewed and our own experience, laparoscopic approaches, despite being complex, may solve the ureteral entrapment with similar results to open surgery but less morbidity and shorter hospital stay

Prognostic factors in patients with stage pT0/pT1/pTa in the radical cystectomy specimen.

OBJECTIVES: To identify risk factors for progression in patients with invasive bladder carcinoma who were pT0/pT1/pTa after cystectomy. METHODS: We analyzed the clinical records of 97 post-cystectomy pT0/pT1/pTa patients for the following variables: hydronephrosis, carcinoma in situ (CIS), lymphovascular invasion, history of non-muscular invasive disease, residual tumor in the specimen and lymphatic invasion (pN). pN+patients were excluded from definitive analysis. The quantitative and qualitative variables were analyzed using standard statistics. The chi-square test was used to analyze associations between categorical variables. Univariate Cox proportional hazard regression analysis (enter method) was performed. The Kaplan-Meier method was used to evaluate survival and the log-rank test to assess differences between groups. Statistical significance was set at p<0.05. The analysis was performed using SPSS version 15.0. RESULTS: The study sample included 97 cases. The specimen was staged at T2 in 97% of patients after transurethral resection (TUR); After cystectomy, the specimen was staged as pT0 (R0) in 44.3% and pT1/Ta (R1) in 55.7%. Median follow-up was 47 months. Lymph node metastasis were detected in 5.2% of patients (pN+rpar; and had a negative impact on survival (p=0.02). Overall survival was 59.8% and cancer-specific survival 76.6%. Univariate analysis showed a relationship between tumor progression and the presence of CIS (p < 0.001), lymphovascular invasion (p=0.049), and hydronephrosis(p < 0.001). In the multivariate analysis, only the presence of CIS in the transurethral resection was associated with reduced cancer-specific survival (HR 100.5; 95% CI, 10.8 to 933.1; pp<0.001). CONCLUSIONS: Although the prognosis of stage pT0/pT1/pTa carcinoma in the cystectomy specimen is excellent, some patients experience progression. The presence of CIS in the transurethral resection was an independent predictor of recurrence in these cases.

Factores de mal pronóstico en pacientes con estadio pT0/pT1/pTa en la pieza de cistectomía radical / Prognostic factors in patients with stage pT0/pT1/pTa in the radical cystectomy specimen

OBJETIVO: Los pacientes con estadio pT0-1-a post-cistectomía tienen una elevada supervivencia, pero un porcentaje de ellos presentará progresión tumoral y muerte por esta causa. Identificación de los factores de riesgo de progresión en pacientes con carcinoma vesical infiltrante que fueron pT0-1-a post-cistectomía. MÉTODOS: Se recogieron 97 pacientes pT0-1 post-cistectomía. Se analizaron las siguientes variables: hidronefrosis, CIS, invasión linfovascular, antecedente de TVNMI, tumor residual en la pieza e invasión linfática (pN). Los pacientes con pN+ fueron excluidos del análisis. Los pacientes con pN+ (5 casos) fueron excluidos del análisis final, que se realizó sobre 92 casos. Las variables cuantitativas y cualitativas se analizaron mediante los estadísticos habituales. La Chi cuadrado se utilizó para evaluar asociaciones entre variables categóricas. Se realizó un análisis univariante y posteriormente se ajustó mediante un modelo de riesgos proporcionales de Cox (método enter). El método de Kaplan-Meier se ha utilizado para evaluar la supervivencia y el test de long-rank para evaluar las diferencias entre los distintos grupos. La significación estadística se consideró cuando existió una p<0,05. Todos los cálculos se han realizado con el programa estadístico SPSS versión 15.0 en castellano. RESULTADOS: 97 casos cumplían los criterios de inclusión. El 97% fueron T2 y el resto T3 en la RTU. El 44,3% fueron pT0 (R0) y el 55,7% pT1-a (R1). La mediana de seguimiento fue de 47 meses. El 5,2% de los pacientes fueron pN+, con un impacto negativo en la supervivencia (p=0,02). La supervivencia global fue del 59,8% y la cáncer-específica del 76,6%. En el análisis univariante se observó una relación entre la progresión tumoral y la presencia de CIS (p<0,001), invasión linfovascular (p=0,049) e hidronefrosis (p<0,001). En el análisis multivariante, solo la presencia de CIS en la RTU se asoció a una menor supervivencia cáncer-específica (HR 100,5; 95% IC 10,8-933,1; p<0,001). CONCLUSIONES: Aunque el pronóstico de los pacientes pT0/pT1/pTa en la pieza de cistectomía es excelente, algunos presentan progresión. La presencia de CIS en la RTU ha demostrado ser un factor predictor de recidiva y progresión independiente de recidiva en estos casos (AU)

OBJECTIVES: To identify risk factors for progression in patients with invasive bladder carcinoma who were pT0/pT1/pTa after cystectomy. METHODS: We analyzed the clinical records of 97 post-cystectomy pT0/pT1/pTa patients for the following variables: hydronephrosis, carcinoma in situ (CIS), lymphovascular invasion, history of non-muscular invasive disease, residual tumor in the specimen and lymphatic invasion (pN). pN+ patients were excluded from definitive analysis. The quantitative and qualitative variables were analyzed using standard statistics. The chi-square test was used to analyze associations between categorical variables. Univariate Cox proportional hazard regression analysis (enter method) was performed. The Kaplan-Meier method was used to evaluate survival and the log-rank test to assess differences between groups. Statistical significance was set at p<0.05. The analysis was performed using SPSS version 15.0. RESULTS: The study sample included 97 cases. The specimen was staged at T2 in 97% of patients after transurethral resection (TUR); After cystectomy, the specimen was staged as pT0 (R0) in 44.3% and pT1/Ta (R1) in 55.7%. Median follow-up was 47 months. Lymph node metastasis were detected in 5.2% of patients (pN+) and had a negative impact on survival (p=0.02). Overall survival was 59.8% and cancer-specific survival 76.6%. Univariate analysis showed a relationship between tumor progression and the presence of CIS (p<0.001), lymphovascular invasion (p=0.049), and hydronephrosis (p<0.001). In the multivariate analysis, only the presence of CIS in the transurtethral resection was associated with reduced cancer-specific survival (HR 100.5; 95% CI, 10.8 to 933.1; p<0.001). CONCLUSIONS: Although the prognosis of stage pT0/pT1/pTa carcinoma in the cystectomy specimen is excellent, some patients experience progression. The presence of CIS in the transurethral resection was an independent predictor of recurrence in these cases (AU)

Manejo de la recidiva bioquímica en el cáncer de próstata según la Guías de Práctica Clínica / Management of prostate cancer biochemical recurrence in the clinical guidelines

OBJETIVO: Revisión de las Guías Clínicas que consideramos tienen un mayor impacto en la actividad urológica, para conocer y comparar sus recomendaciones en el diagnóstico y manejo de la recidiva bioquímica después de un tratamiento con intención curativa en el cáncer prostático ( prostatectomía radical o radioterapia). MÉTODOS: Hemos revisado las Guías Clínicas de la European Urological Assciation (EAU), American Urological Association (AUA), National Comprehensive Cancer Network (NCCN) y del National Institute for Health and Clinical Excellence (NICE), así como la evidencia científica en la que se basan. RESULTADOS: Ponemos de manifiesto en este artículo la complejidad del tema a tratar y las similitudes y disparidades entre ellas. La definición de recidiva varía si se trata de pacientes que han sido sometidos a prostatectomía radical o a radioterapia. En cuanto a los tratamientos, en el primer caso se decantan hacia la radioterapia precoz siendo en cambio más dispersas las recomendaciones en la recidiva bioquímica después de radioterapia. CONCLUSIÓN: Las Guías Clínicas suponen una magnífica ayuda al profesional para la toma de decisiones. Las Guías Clínicas formulan recomendaciones, con mayor o menor grado de evidencia y que han de ser periódicamente reevaluadas incorporando la evidencia científica que vaya apareciendo(AU)

OBJECTIVE: Review of the Guidelines which have major impact on the urological field, in order to compare and to know their recommendations in the diagnosis and management of biochemical relapse after a healing treatment of prostate cancer (radical prostatectomy or radiotherapy). METHODS: We review the Guidelines of the European Urological Association (EAU), the American Urological Association (AUA), of the National Comprehensive Cancer Network (NCCN) and those of the National Institute for Health and Clinical Excellence (NICE), as well as the scientific evidence on which they are based. RESULTS: In this paper we state the complexity of the subject being dealt with and coincidences and differences among them. The definition of relapse varies depending on whether the patient has undergone either radical prostatectomy or radiotherapy. Regarding treatment, in the first case early radiotherapy is the treatment of choice, but recommendations after radiotherapy are not so specific. CONCLUSION: Clinical Guidelines represent a great aid in decision making for the professional. Guidelines give recommendations with a higher o lower degree of scientific evidence and must be evaluated regularly to include new evidences which are coming through(AU)

First percutaneous computed tomography-guided radiofrequency ablation of renal tumor in horseshoe kidney.

OBJECTIVE: To report the first case of percutaneous radiofrequency ablation of a tumor in a horseshoe kidney. MATERIALS AND METHODS: A 75-year-old man presented with a 3-cm solid mass on the isthmus of a horseshoe kidney. The tumor was discovered incidentally on a routine computed tomography scan performed during follow-up of a colon carcinoma treated with open hemicolectomy. The patient presented a high anesthetic risk (American Society of Anesthesiologists score of 3) because of a comorbid cardiovascular condition. Biopsy of the mass revealed type I papillary carcinoma. We performed percutaneous radiofrequency ablation using a posterior approach. RESULTS: No complications occurred, and postoperative computed tomography 3 months after the procedure showed no significant contrast enhancement in the treated area. CONCLUSIONS: To our knowledge, this is the first case of a tumor in a horseshoe kidney satisfactorily treated with percutaneous radiofrequency ablation. The technique could represent an alternative to traditional surgery in selected cases.

Intravenous sildenafil as a preconditioning drug against hemodynamic consequences of warm ischemia-reperfusion on the kidney.

PURPOSE: We designed an experimental model of renal ischemia-reperfusion to evaluate the preemptive effect of intravenous sildenafil according to the dose administered (0.7 vs 1.4 mg/kg) and the time of administration (30 minutes before ischemia or during ischemia). MATERIALS AND METHODS: A total of 20 minipigs were divided into groups of 4 each, including group 1-control, group 2-sildenafil 0.7 mg/kg intravenously 30 minutes before vascular clamping, group 3-sildenafil 0.7 mg/kg intravenously during warm ischemia, group 4-sildenafil 1.4 mg/kg intravenously 30 minutes before vascular clamping and group 5-sildenafil 1.4 mg/kg intravenously during warm ischemia. The ischemia-reperfusion model was applied using laparotomy and right kidney vascular clamping for 30 minutes, followed by unclamping and reperfusion for 45 minutes. Renal vascular flow and systemic mean arterial pressure were recorded for 45 minutes after unclamping. Mean values were compared using Student t test with significance considered at p <0.05. RESULTS: Sildenafil led to a decrease in arterial pressure compared to that in controls, especially at the dose of 1.4 vs 0.7 mg/kg, including 113.77, 109.76, 106.12, 97.41 and 82.85 mm Hg in groups 1 to 5, respectively. Renal vascular flow was significantly higher in groups 2 and 3 than in groups 1, 4 and 5 (112.82 and 111.33 vs 88.25, 87.91 and 84.37 ml per minute, respectively, p = 0.000). CONCLUSIONS: The effect of intravenous sildenafil as a preemptive drug against the hemodynamic effects of renal ischemia-reperfusion is dose dependent. The 0.7 mg/kg dose significantly increased reperfusion renal vascular flow with a small decrease in arterial pressure compared to the 1.4 mg/kg dose.

Cadaver donor kidney retransplantation in the pediatric patient: complications and long-term outcome.

PURPOSE: We compared the outcome of second and third kidney allografts with that of the first kidney allograft in pediatric recipients. MATERIALS AND METHODS: We classified 173 cadaveric kidney recipients into 2 groups. Group 1 comprised 120 first transplants and group 2 comprised 53 retransplants, including 43 second and 10 third transplants. We compared demographic characteristics and survival in groups 1 and 2. RESULTS: Group 1 consisted of 78 boys and 42 girls with a mean ± SD age of 11.5 ± 4.2 years. Group 2 consisted of 37 boys and 16 girls with a mean age of 10.4 ± 4.7 years. One, 5, 10 and 15-year graft survival rates were 78.7%, 64.3%, 54.5% and 50.7% for first transplants vs 82.8%, 57.8%, 57.8% and 41.3%, respectively, for retransplants (p = 0.757). Patient survival at 1, 5 and 15-year was 95.8%, 89.6%, 84.9% in the first transplant group vs 93.6%, 93.6% and 93.6%, respectively, in the retransplant group (p = 0.0.63). Graft survival was significantly higher in patients who did vs did not receive calcineurin inhibitors in the 2 groups (p = 0.02). CONCLUSIONS: Kidney retransplantation in the pediatric population can yield excellent long-term outcomes, especially in patients treated with calcineurin inhibitors.

Villous adenoma in augmentation colocystoplasty asociated to infiltrating urotelial cancer in bladder remanent.

OBJECTIVE: To report a new case of villous adenoma developed in augmentation colocystoplasty. METHODS: Characterization of a new case and review of the literature published to date. RESULTS: We report the case of a 66 year-old man with a villous adenoma and synchronic infiltrating transitional cell carcinoma of the bladder after augmentation colocystoplasty. The latency period until the development of villous adenoma after surgery is long. Treatment consisted of transurethral resection. CONCLUSIONS: Villous adenoma is a benign neoplasm that occurs in the colonic mucosa and shows a high ability to become a malignant colonic cancer. Only two cases of villous adenoma in augmentation colocystoplasty have been reported. We recommend follow up with periodic cystoscopy because of its high malignancy potency.

Adenoma velloso en colocistoplastia de aumento asociado a tumor urotelial infiltrante en el remanente vesical / Villous adenoma in augmentation colocystoplasty asociated to infiltrating urotelial cancer in bladder remanent

OBJETIVO: Presentación de un nuevo caso de adenoma velloso desarrollado en una colocistoplastia de aumento.MÉTODO: Caracterización de un nuevo caso y revisión de la literatura publicada hasta la fecha.RESULTADOS: Presentamos el caso de un varón de 66 años con un adenoma velloso sincrónico con un tumor infiltrante de urotelio vesical y que había sido sometido a una colocistoplastia de aumento por microvejiga tuberculosa. El tiempo de latencia desde la cirugía hasta su aparición fue de 23 años. El tratamiento consistió en su resección transuretral.CONCLUSIONES: El adenoma velloso es un tumor benigno de la mucosa colónica con alto potencial para evolucionar hacia un cáncer de colon infiltrante. Su aparición en colocistoplastias de aumento ha sido previamente descrita en la literatura en dos ocasiones. Recomendamos seguimiento estrecho mediante cistoscopia, dada su capacidad de malignización (AU)

OBJECTIVE: To report a new case of villous adenoma developed in augmentation colocystoplasty.METHODS: Characterization of a new case and review of the literature published to date.RESULTS: We report the case of a 66 year-old man with a villous adenoma and synchronic infiltrating transitional cell carcinoma of the bladder after augmentation colocystoplasty. The latency period until the development of villous adenoma after surgery is long. Treatment consisted of transurethral resection.CONCLUSIONS: Villous adenoma is a benign neoplasm that occurs in the colonic mucosa and shows a high ability to become a malignant colonic cancer. Only two cases of villous adenoma in augmentation colocystoplasty have been reported. We recommend follow up with periodic cystoscopy because of its high malignancy potency (AU)

[Conservative treatment of renal cancer using HIFU. Procedure, indications, and results]. / Tratamiento conservador del cáncer renal mediante HIFU. Técnica, indicaciones y resultados.

This article reviews the mechanisms of action of high-intensity focused ultrasound (HIFU), as well as both experimental and clinical work related to renal tumor treatment. While most currently available experience in urological tumors with HIFU has been obtained with prostate cancer, an increasing number of studies support the efficacy and safety of this procedure for renal tumor destruction. HIFU completes, with cryotherapy and radiofrequency, the spectrum of minimally invasive surgery in renal cancer, intended to decrease surgical morbidity while achieving similar oncological control rates. It is still early to recommend this procedure for daily clinical practice because, while its safety and few side effects are known, many ongoing studies intended to confirm its mid- and long-term oncological efficacy should be completed.