Early kinetics of donor-derived cell-free DNA after transplantation predicts renal graft recovery and long-term function.

BACKGROUND: Ischemia-reperfusion injury (IRI) upon transplantation is one of the most impactful events that the kidney graft suffers during its life. Its clinical manifestation in the recipient, delayed graft function (DGF), has serious prognostic consequences. However, the different definitions of DGF are subject to physicians' choices and centers' policies, and a more objective tool to quantify IRI is needed. Here, we propose the use of donor-derived cell-free DNA (ddcfDNA) for this scope. METHODS: ddcfDNA was assessed in 61 kidney transplant recipients of either living or deceased donors at 24 h, and 7, 14 and 30 days after transplantation using the AlloSeq cfDNA Kit (CareDx, San Francisco, CA, USA). Patients were followed-up for 6 months and 7-year graft survival was estimated through the complete and functional iBox tool. RESULTS: Twenty-four-hour ddcfDNA was associated with functional DGF [7.20% (2.35%-15.50%) in patients with functional DGF versus 2.70% (1.55%-4.05%) in patients without it, P = .023] and 6-month estimated glomerular filtration rate (r = -0.311, P = .023). At Day 7 after transplantation, ddcfDNA was associated with dialysis duration in DGF patients (r = 0.612, P = .005) and worse 7-year iBox-estimated graft survival probability (ß -0.42, P = .001) at multivariable analysis. Patients with early normalization of ddcfDNA (<0.5% at 1 week) had improved functional iBox-estimated probability of graft survival (79.5 ± 16.8%) in comparison with patients with 7-day ddcfDNA ≥0.5% (67.7 ± 24.1%) (P = .047). CONCLUSIONS: ddcfDNA early kinetics after transplantation reflect recovery from IRI and are associated with short-, medium- and long-term graft outcome. This may provide a more objective estimate of IRI severity in comparison with the clinical-based definitions of DGF.

Impact of robotic-assisted kidney transplantation on post-transplant infections: a case-control study.

BACKGROUND: The aim of this study was to determine the differences in the incidence, epidemiology, clinical characteristics and risk factors of infections in living donor kidney transplant recipients using robotic-assisted kidney transplantation (RAKT) and open approach. METHODS: We conducted a retrospective observational study from January 2016 to December 2019. For the risk factor analysis, a matched case-control study (1:1 ratio) was performed (robotic vs open). Control subjects were matched for living donor and time of transplantation. The data included de novo immunosuppressive regimen, delayed graft function, urological complications, acute allograft rejection and incidence, clinical features, microbiological findings and outcomes of infections. RESULTS: Ninety-four RAKT and 84 controls were included. There were no differences between groups in terms of age, gender, BMI, median days of hospitalization, immunosuppressive regimen, need for surgical urologic procedures post-transplantation, presence of urinary leak or acute allograft rejection. Thirty-five percent of all recipients analyzed presented an infection, mostly asymptomatic bacteriuria (49%), symptomatic urinary tract infection (31%) and surgical site infection (10%). Pseudomonas aeruginosa was the most frequent isolated microorganism in 67%, followed by E. coli (20%), Enterococcus faecalis (17%) and Klebsiella pneumoniae (10%). Eight percent of the microorganisms were multidrug resistant. The open kidney transplantation group presented more infections compared to RAKT (43 vs 27%, p = 0.04). After multivariate analysis, need for surgical urologic procedure post-transplantation (OR 6.2, 95% CI 1.1-35), BMI ≥ 30 (OR 3.6, 95% CI 1.5-9) and acute allograft rejection (OR 3.2, 95% CI 1.2-8.5) were associated with infection, whereas RAKT (OR 0.5, 95% CI 0.2-0.9) and the use of JJ catheter (OR 0.36, 95% CI 0.17-0.72) were protective factors. CONCLUSIONS: Infection is a frequent event in patients receiving a living donor kidney transplant. Acute allograft rejection, need for surgical urologic procedure post-transplantation and BMI were associated with infection, whereas robotic surgery was a protective factor in living donor kidney transplantation.

Risk factors for irreversible unilateral loss of renal function in patients with deep endometriosis.

Deep endometriosis (DE) can be more aggressive than other types of endometriosis, and may even lead to irreversible severe complications such as complete unilateral loss of renal function. We aimed to describe the clinical and radiologic characteristics of DE patients diagnosed with irreversible unilateral loss of renal function due to unilateral ureteral stenosis and evaluate risk factors for developing this loss. This retrospective cohort study included 436 patients who underwent laparoscopic DE surgery. We evaluated two groups of patients according to preserved (Non-Renal Loss Group; n = 421) or irreversible unilateral damaged renal function (Renal Loss Group; n = 15). Preoperative epidemiologic variables, clinical characteristics, radiologic findings and surgical treatments of all the patients were collected. The Renal Loss Group had a higher infertility rate and a higher proportion of asymptomatic patients. The following radiological variables showed statistically significant differences between the two groups: mean endometrioma diameter, the presence of intestinal DE and negative sliding sign. Multivariate analysis showed that infertility, being asymptomatic, having intestinal DE or torus uterinus/uterosacral ligament DE and a negative sliding sign significantly increased the risk of loss of renal function. Therefore, among patients with these clinical and/or radiological variables, severe urinary tract obstruction should be specifically ruled out.

Living donor-gifted allograft lithiasis: surgical experience after bench surgery stone removal and follow-up.

This study presents the surgical experience and long-term outcomes of living donor kidney transplantations involving asymptomatic kidney stones, using ex vivo flexible ureterorenoscopy (f-URS) during bench surgery for stone removal. Out of 1743 living kidney donors assessed between January 2012 and October 2022, 18 (1%) were diagnosed with urolithiasis. Among them, 12 donors were rejected, and 6 were accepted for kidney donation. Stone removal was successfully performed using f-URS during bench surgery, with no immediate complications or acute rejections observed. The study analyzed six living kidney transplants, of which 4 (67%) donors and three recipients were female, and 4 (67%) donors were blood-related to the recipient. The median age for donors and recipients was 57.5 and 51.5 years, respectively. The stones, primarily located in the lower calyx, had a median size of 6 mm. The median cold ischemia time during surgery was 41.6 min, and ex vivo f-URS ensured complete stone removal in all cases. After a median follow-up of 120 months, the remaining grafts were functioning well, and no urinary stone recurrence was observed in either the recipients or living donors. The findings suggest that bench f-URS is a safe approach for managing urinary stones in kidney grafts, providing good functional outcomes without stone recurrence in selected cases.

Recommendations for living donor kidney transplantation.

This Guide for Living Donor Kidney Transplantation (LDKT) has been prepared with the sponsorship of the Spanish Society of Nephrology (SEN), the Spanish Transplant Society (SET), and the Spanish National Transplant Organization (ONT). It updates evidence to offer the best chronic renal failure treatment when a potential living donor is available. The core aim of this Guide is to supply clinicians who evaluate living donors and transplant recipients with the best decision-making tools, to optimise their outcomes. Moreover, the role of living donors in the current KT context should recover the level of importance it had until recently. To this end the new forms of incompatible HLA and/or ABO donation, as well as the paired donation which is possible in several hospitals with experience in LDKT, offer additional ways to treat renal patients with an incompatible donor. Good results in terms of patient and graft survival have expanded the range of circumstances under which living renal donors are accepted. Older donors are now accepted, as are others with factors that affect the decision, such as a borderline clinical history or alterations, which when evaluated may lead to an additional number of transplantations. This Guide does not forget that LDKT may lead to risk for the donor. Pre-donation evaluation has to centre on the problems which may arise over the short or long-term, and these have to be described to the potential donor so that they are able take them into account. Experience over recent years has led to progress in risk analysis, to protect donors' health. This aspect always has to be taken into account by LDKT programmes when evaluating potential donors. Finally, this Guide has been designed to aid decision-making, with recommendations and suggestions when uncertainties arise in pre-donation studies. Its overarching aim is to ensure that informed consent is based on high quality studies and information supplied to donors and recipients, offering the strongest possible guarantees.

Outcomes after 20 years of experience in minimally invasive living-donor nephrectomy.

INTRODUCTION: The transperitoneal laparoscopic approach is considered the gold standard technique for living kidney donation. Other accepted laparoscopic techniques include the retroperitoneal approach, natural orifice transluminal endoscopic surgery (NOTES)-assisted, laparo-endoscopic single-site surgery (LESS), with excellent results in the donor and graft. Many studies have compared these techniques with open ones. Our objective is to describe our experience and results in minimally invasive living-donor nephrectomies (MILDN): laparoscopic, NOTES-assisted, and LESS since their introduction in March 2002. MATERIALS AND METHODS: We conducted a retrospective observational study of donors undergoing MILDN between March 2002 and March 2020. RESULTS: A total of 714 MILDNs were performed at our centre. All were completed, except for one, because of recipient death. The conventional laparoscopic approach was used in 541 cases (75.88%), NOTES in 116 (16.9%), LESS in 55 (7.7%), and one mini open (0.14%). Two-thirds of the donors were females (478 cases). The mean donor age was 52.87 years (SD 10.93). Six donors (0.8%) were diagnosed beforehand with a small renal mass, which was removed before transplantation in bench surgery. The right kidney was removed in 17.8% of cases. Warm ischaemia time was higher in the NOTES and LESS groups. We had eight conversions. The global intraoperative and postoperative complication rates were 6.8% and 4.9%, respectively. None of the donors developed renal disease during follow-up (mean 3.68 years). Five-year recipient and graft survival rates were 98.8% and 96.8%, respectively. CONCLUSIONS: MILDN techniques are safe for donors and grafts, with low complication.

[Orthotopic renal allograft transplant. State of the art.] / Trasplante renal ortotópico. Estado actual.

Kidney transplantation is the treatment of choice for patients with end-stage renal disease (ESRD)as it has shown a better quality of life and longer survival compared to dialysis. Patients with ESRD have associated vascular pathology in a significant percentage, with abundant calcifications at the level of the aorto-iliac axis.The survival of transplanted patients has also increased so an important number of patients have multiple transplants,patients with an indication for a third, fourth and even fifth transplant.In these cases, in which the iliac fossa is no longer practicable(atheromatosis, vascular abnormalities, occupied iliac fossae for previous kidney transplant…), orthotopic kidney transplantation offers a viable option with good results.

El trasplante renal es el tratamiento de elección para pacientes con insuficiencia renal crónica terminal (IRCT) ya que ha demostrado una mejor calidadd e vida y mayor supervivencia en comparación ala diálisis. Los pacientes con IRCT tienen asociada patología vascular en un importante porcentaje, con abundantes calcificaciones a nivel del eje aorto-ilíaco. La supervivencia de los pacientes trasplantados también se ha incrementado por lo que cada vez más nos encontramos con pluritrasplantados, pacientes con indicación de tercer, cuarto e incluso quinto trasplante.En estos casos en los que la fosa ilíaca ya no es practicable (ateromatosis, malformaciones vasculares, ocupación de fosas ilíacas por trasplantes renales previos…),el trasplante renal ortotópico ofrece una opción viable con buenos resultados.

Trasplante renal ortotópico. Estado actual / Trapianto renale ortotopico. Stato attuale

El trasplante renal es el tratamiento deelección para pacientes con insuficiencia renal crónicaterminal (IRCT) ya que ha demostrado una mejor calidad de vida y mayor supervivencia en comparación ala diálisis. Los pacientes con IRCT tienen asociada patología vascular en un importante porcentaje, con abundantes calcificaciones a nivel del eje aorto-ilíaco. Lasupervivencia de los pacientes trasplantados también seha incrementado por lo que cada vez más nos encontramos con pluritrasplantados, pacientes con indicaciónde tercer, cuarto e incluso quinto trasplante.En estos casos en los que la fosa ilíaca ya no es practicable (ateromatosis, malformaciones vasculares, ocupación de fosas ilíacas por trasplantes renales previos...),el trasplante renal ortotópico ofrece una opción viablecon buenos resultados.(AU)

Kidney transplantation is the treatment ofchoice for patients with end-stage renal disease (ESRD)as it has shown a better quality of life and longer survivalcompared to dialysis. Patients with ESRD have associated vascular pathology in a significant percentage, withabundant calcifications at the level of the aorto-iliac axis.The survival of transplanted patients has also increasedso an important number of patients have multiple transplants, patients with an indication for a third, fourth andeven fifth transplant.In these cases, in which the iliac fossa is no longer practicable (atheromatosis, vascular abnormalities, occupiediliac fossae for previous kidney transplant...) , orthotopickidney transplantation offers a viable option with goodresults.(AU)

[Cystoscopy in the assessment of patients with bladder pain syndrome: Results of a national multicenter observational study.] / La cistoscopia en la evaluación del síndrome de dolor vesical: resultados de un estudio observacional multicéntrico nacional.

OBJECTIVES: To study the use and results of cystoscopy and bladder hydrodistension in the objective assessment of patients with Bladder Pain Syndrome (BPS), in routine clinical practice. MATERIAL AND METHODS: Observational, non-interventional, national, multicenter study carried out in Functional Urology and Urodynamic Units of Spain belonging to the IFU Group. 273 women with BPS who underwent cystoscopy at baseline as a diagnostic tool according to clinical criteria and following the routine clinical practice of each center, were studied. The pre and post hydrodistension findings and the scores of the symptom and Health-Related Quality of Life (HRQoL) questionnaires were described: BPIC-SS, PPBC, PGI-S and EQ-5D-5L. RESULTS: The mean age (SD) was 59 (14) years with a high presence of bladder symptoms: increased voiding frequency (81.7%), nocturia (74%) and urgency (60.4%). 40.7% of cystoscopies were performed under anesthesia and 73.7% uses a standard rigid cystoscope. Hunner lesions were observed in 9.9% of the patients, hypervascularizations (46.2%), glomerulations (23.4%), mild bleeding (6.6%) and scars (2.2%). After hydrodistension, a greater number of grade 1 and 2 lesions were observed. In 51.6% of the patients there were no changes, but in 27.5% slight changes were observed and in 11.4% moderate or severe changes. Symptom and HRQoL questionnaire scores showed no association with cystoscopy findings before and after hydrodistension. CONCLUSIONS: The value of the cystoscopic findings in the SDV has yet to be defined, although it plays a fundamental role in the differential diagnosis. In this observational study, we did not find a correlation of the cystoscopic findings with the symptoms of the patients, measured by validated questionnaires, nor with the HRQoL.

OBJETIVO: Analizar el uso y resultados de la cistoscopia y la hidrodistensión vesical para la evaluación objetiva de pacientes con Síndrome de Dolor Vesical (SDV), en el contexto de práctica clínica habitual.MATERIAL Y MÉTODOS: Estudio observacional, no intervencionista, multicéntrico de ámbito nacional, realizado en Unidades de Urología Funcional y Urodinámica de España pertenecientes al Grupo IFU en el que se analizaron 273 mujeres con SDV a las que se les realizó una cistoscopia a nivel basal como herramienta diagnóstica según criterio clínico y siguiendo la práctica clínica habitual de cada centro. Se describieron los hallazgos pre y post hidrodistensión y las puntuaciones de los cuestionarios de síntomas y de Calidad de Vida Relacionada con la Salud (CVRS): BPIC-SS, PPBC, PGI-S y EQ-5D-5L. RESULTADOS: La edad media (DE) fue de 59 (14) años con gran presencia de síntomas vesicales: frecuencia miccional aumentada (81,7%), nocturia (74,0%) y urgencia (60,4%). El 40,7% de las cistoscopias se realizaron bajo anestesia y en el 73,7% se empleó un cistoscopio rígido estándar. Se observaron lesiones de Hunner en un 9,9% de las pacientes, hipervascularizaciones (46,2%), glomerulaciones (23,4%), sangrado leve (6,6%) y cicatrices (2,2%). Tras la hidrodistensión se observó un mayor número de lesiones grado 1 y 2. En el 51,6% de las pacientes no hubo cambios, pero en el 27,5% se observaron cambios leves y en el 11,4% cambios moderados o graves. Las puntuaciones de los cuestionarios de síntomas y CVRS no mostraron asociación con los hallazgos de la cistoscopia antes y después de la hidrodistensión. CONCLUSIONES: El valor de los hallazgos cistoscópicos en el SDV está aún por definir, aunque juega un papel fundamental en el diagnóstico diferencial. En este estudio observacional no encontramos correlación de los hallazgos cistoscópicos con los síntomas de las pacientes, medidos por cuestionarios validados, ni con la CVRS.

La cistoscopia en la evaluación del síndrome de dolor vesical: resultados de un estudio observacional multicéntrico nacional / Cystoscopy in the evaluation of bladder pain syndrome: results of a national multicenter observational study

Objetivo: Analizar el uso y resultados dela cistoscopia y la hidrodistensión vesical para la evaluación objetiva de pacientes con Síndrome de DolorVesical (SDV), en el contexto de práctica clínica habitual.Material y métodos: Estudio observacional, nointervencionista, multicéntrico de ámbito nacional, realizado en Unidades de Urología Funcional y Urodinámica de España pertenecientes al Grupo IFU en el quese analizaron 273 mujeres con SDV a las que se lesrealizó una cistoscopia a nivel basal como herramientadiagnóstica según criterio clínico y siguiendo la prácticaclínica habitual de cada centro. Se describieron los hallazgos pre y post hidrodistensión y las puntuaciones de los cuestionarios de síntomas y de Calidad de Vida Relacionada con la Salud (CVRS): BPIC-SS, PPBC, PGI-Sy EQ-5D-5L.Resultados: La edad media (DE) fue de 59 (14) añoscon gran presencia de síntomas vesicales: frecuenciamiccional aumentada (81,7%), nocturia (74,0%) y urgencia (60,4%). El 40,7% de las cistoscopias se realizaron bajo anestesia y en el 73,7% se empleó uncistoscopio rígido estándar. Se observaron lesiones deHunner en un 9,9% de las pacientes, hipervascularizaciones (46,2%), glomerulaciones (23,4%), sangradoleve (6,6%) y cicatrices (2,2%). Tras la hidrodistensiónse observó un mayor número de lesiones grado 1 y2. En el 51,6% de las pacientes no hubo cambios,pero en el 27,5% se observaron cambios leves y en el11,4% cambios moderados o graves. Las puntuacionesde los cuestionarios de síntomas y CVRS no mostraronasociación con los hallazgos de la cistoscopia antes ydespués de la hidrodistensión. Conclusiones: El valor de los hallazgos cistoscópicos en el SDV está aún por definir, aunque juega unpapel fundamental en el diagnóstico diferencial. En esteestudio observacional no encontramos correlación delos hallazgos cistoscópicos con los síntomas de las pacientes, medidos por cuestionarios validados, ni con laCVRS.(AU)

Objetives: To study the use and resultsof cystoscopy and bladder hydrodistension in the objective assessment of patients with Bladder Pain Syndrome(BPS), in routine clinical practice.Material and methods: Observational, non-interventional, national, multicenter study carried out inFunctional Urology and Urodynamic Units of Spain belonging to the IFU Group. 273 women with BPS whounderwent cystoscopy at baseline as a diagnostic toolaccording to clinical criteria and following the routineclinical practice of each center, were studied. The preand post hydrodistension findings and the scores of thesymptom and Health-Related Quality of Life (HRQoL)questionnaires were described: BPIC-SS, PPBC, PGI-Sand EQ-5D-5L.Results: The mean age (SD) was 59 (14) years witha high presence of bladder symptoms: increased voiding frequency (81.7%), nocturia (74%) and urgency(60.4%). 40.7% of cystoscopies were performed under anesthesia and 73.7% uses a standard rigid cystoscope. Hunner lesions were observed in 9.9% of thepatients, hypervascularizations (46.2%), glomerulations(23.4%), mild bleeding (6.6%) and scars (2.2%). Afterhydrodistension, a greater number of grade 1 and 2lesions were observed. In 51.6% of the patients therewere no changes, but in 27.5% slight changes wereobserved and in 11.4% moderate or severe changes.Symptom and HRQoL questionnaire scores showed noassociation with cystoscopy findings before and afterhydrodistension.Cconclusions: The value of the cystoscopic findingsin the SDV has yet to be defined, although it plays afundamental role in the differential diagnosis. In this observational study, we did not find a correlation of thecystoscopic findings with the symptoms of the patients,measured by validated questionnaires, nor with theHRQoL.(AU)

Laparoendoscopic single-site simultaneous bilateral nephrectomy: first reported case series.

Bilateral renal tumors in patients on dialysis are usually managed with bilateral nephrectomy. With traditional laparoscopy, this procedure requires the insertion of multiple trocars. Laparoendoscopic single-site surgery (LESS) uses a single umbilical incision to insert multiple instruments and is also employed for extraction of specimens. This technique appears especially useful for bilateral nephrectomy, since many access ports can be spared. We describe 5 cases of simultaneous bilateral radical nephrectomies performed at a single academic institution. We had no intraoperative complications and a mean operating time of 155 minutes. Four patients could be resected using this approach; one case was converted to a traditional laparoscopy. One case had a postoperative complication. We believe this technique is feasible, and can be accomplished with acceptable morbidity and ade-quate operative time.

B Cell-Derived Extracellular Vesicles Reveal Residual B Cell Activity in Kidney Graft Recipients Undergoing Pre-Transplant Desensitization.

Background: Living-donor kidney transplant (LDKT) recipients undergoing desensitization for Human Leukocyte Antigen (HLA)-incompatibility have a high risk of developing antibody-mediated rejection (ABMR). The purpose of the study is to evaluate if residual B cell activity after desensitization could be estimated by the presence of circulating B cell-derived extracellular vesicles (BEVs). Methods: BEVs were isolated by Sepharose-based size exclusion chromatography and defined as CD19+ and HLA-II+ extracellular vesicles. We analyzed stored serum samples from positive crossmatch LDKT recipients before and after desensitization at first post-transplant biopsy and at 12-month protocol biopsy (n = 11). Control groups were formed by hypersensitized patients who were not submitted to desensitization (n = 10) and by low-risk recipients (n = 9). A prospective validation cohort of 11 patients also included the analysis of B cells subpopulations in recipients' blood and lymph nodes recovered upon graft implantation, along with BEVs analysis before and after desensitization. Results: We found out that CD19+ and HLA-II+BEVs dropped significantly after desensitization and relapse in patients who later developed ABMR was evident. We validated these findings in a proof-of-concept prospective cohort of 6 patients who received the same desensitization protocol and also in a control group of 5 LDKT recipients. In these patients, B cell subpopulations were also studied in recipients' blood and lymph nodes that were recovered before the graft implantation. We confirmed the significant drop in BEVs after desensitization and that this paralleled the reduction in CD19+cells in lymph nodes, while in peripheral blood B cells, this change was almost undetectable. Conclusions: BEVs reflected B cell residual activity after desensitization and this could be a valid surrogate of humoral alloreactivity in this setting.

Accuracy of Transvaginal Ultrasound Compared to Cystoscopy in the Diagnosis of Bladder Endometriosis Nodules.

OBJECTIVES: To evaluate the accuracy of transvaginal ultrasound (TVUS) in predicting detrusor infiltration and ureteral meatus involvement in patients with bladder endometriosis (BE) to select which cystoscopic procedures could be avoided and, secondarily, to assess the relationship between symptoms and the characteristics of nodules and the association of BE with other forms of endometriosis. METHODS: Patients with BE diagnosed by TVUS were classified according to detrusor infiltration: BE with partial involvement of the muscular layer (group 1) and total muscular layer involvement with bladder protrusion (group 2). We analyzed the accuracy of TVUS compared with subsequently performed cystoscopy, the correlation with symptoms, and the association with other forms of endometriosis. RESULTS: Among the 22 patients included, TVUS showed 9 patients with BE nodules partially affecting the detrusor (group 1) with normal cystoscopic findings (TVUS negative predictive value, 100%). Transvaginal ultrasound detected 13 nodules with total involvement, all visible by cystoscopy (TVUS positive predictive value, 100%). Transvaginal ultrasound also identified ureteral orifices that were free of involvement at greater than 10 mm from the BE nodule in 21 of 22 women (TVUS sensitivity, 95%). Ultrasound criteria for adenomyosis and endometriosis in other locations were present in 20 of 22 patients. CONCLUSIONS: Transvaginal ultrasound can identify the infiltration of BE nodules in the bladder wall and predict cystoscopic findings with great accuracy. Nodules that partially affect the muscular layer have normal cystoscopic findings, thereby obviating the need for this procedure. Bladder endometriosis nodules are commonly associated with other forms of endometriosis and do not usually affect the ureteral meatus.

Increasing kidney grafts for transplantation.

INTRODUCTION: The current pool of organs available for transplantation does not cover requirements, for this reason non-standard risk donors need to be incorporated into the pool. In this way, donors with small renal tumour are considered for transplantation after bench tumour excision. The aim of our study was to analyse our experience in using these grafts for transplantation. MATERIALS AND METHODS: Retrospective analysis from our prospective accrued database of donors with incidental renal mass used for kidney transplantation between January 2007 and August 2018. RESULTS: Twenty kidney transplantations were performed, thirteen cases received the affected kidney (after tumour removal) and seven the contralateral kidney; from six living and eleven deceased donors. Donor and recipient median age was 58 years (range 22-82) and 56.5 years (range 38-74), respectively. Mean tumour diameter was 12.7 mm (SD 9.5). Tumours resulted in two benign lesions and fifteen renal cell carcinoma. Surgical margins were negative. Two cases presented with bleeding after reperfusion was solved without repercussion. One case presented with immediate vein thrombosis. None of them present delayed graft function. After a 69 month follow-up none of the donors or the recipients presented tumour recurrence. CONCLUSIONS: Kidneys with small incidental tumours seem to be a good option for kidney transplantation in selected patients after bench surgery excision with good functional and oncologic results. More studies and longer follow-up are needed to confirm these results.

Robot-assisted kidney transplantation: update from the European Robotic Urology Section (ERUS) series.

OBJECTIVE: To report the results of the robot-assisted kidney transplantation (RAKT) experience performed in 10 European centres by members of the European Robotic Urology Section (ERUS)-RAKT group. PATIENTS AND METHODS: This is a multicentre prospective observational study of RAKT. Descriptive analysis of recipients and donor characteristics, surgical data, intraoperative outcomes, complications rate and functional results were collected and analysed. RESULTS: Between July 2015 and September 2019, 291 living-donor RAKTs were performed. Recipients were mostly male (189 [65%]), the mean Standard deviation (sd) age was 45.2 (13.35) years, the mean (sd) body mass index was 27.13 (19.28) kg/m2 , and RAKT was pre-emptive in 155 (53.8%) cases. Right and multiple arteries kidneys were used in 15.4%. The mean (sd) total surgical and re-warming time was 244 (70.5) min and 53.16 (15.27) min, respectively. In all, 17 patients presented with postoperative bleeding (5.7%). Five kidneys had delayed graft function; five (2%) were lost due to thrombosis and one due to acute rejection. Two patients had arterial stenosis, three had incisional hernias, six had ureteric stenosis, and nine had lymphoceles. Neither surgical nor re-warming times were correlated with postoperative serum creatinine levels (P > 0.05). Comparison of surgical data between the first 120 cases and the following 171 cases showed a significantly shorter total surgical time in the second group (265 vs 230 min, P = 0.005). CONCLUSIONS: This is the largest European multicentre study of RAKT with good surgical and functional results competitive with open kidney transplant series, with a relatively short learning curve when performed in centres with a wide experience in open kidney transplantation and robotic surgery.

Results and Lessons Learned on Robotic Assisted Kidney Transplantation.

INTRODUCTION: Nowadays, minimally invasive surgery in kidney transplantation is a reality thanks to robotic assistance. In this paper, we describe our experience, how we developed the robotic assisted Kidney transplantation (RAKT) technique, and analyze our results. Material and Methods. This is a retrospective study of all RAKTs performed at our center between July 2015 and March 2020. We describe the donor selection, surgical technique, and analyze the surgical results and complications. A comparison between the first 20 cases and the following ones is performed. RESULTS: During the aforementioned period, 82 living donor RAKTs were performed. The mean age was 47.4 ± 13.4 and 50 (61%) were male. Mean body mass index was 25 ± 4.7 and preemptive in 63.7% of cases. Right kidneys and multiple arteries were seen in 14.6% and 12.2%, respectively. Mean operative and rewarming time was 197 ± 42 and 47 ± 9.6 minutes, respectively. Five cases required conversion to open surgery because of abnormal kidney vascularization. Two patients required embolization for subcapsular and hypogastric artery bleeding without repercussion. Three kidneys were lost, two of them due to acute rejection and one because venous thrombosis. Late complications requiring surgery included one kidney artery stenosis, one ureteral stenosis, two lymphoceles, and three hernia repairs. We noticed a significant reduction in time between the first 20 cases and the following ones from 248.25 ± 38.1 to 189.75 ± 25.3 (p < 0.05). With a mean follow-up time of 1.8 years (SD 1.3), the mean creatinine was 1.52 (SD 0.7) and RAKT graft survival was 98%. CONCLUSIONS: The robotic approach is an attractive, minimally invasive method for kidney transplantation, yielding good results. Further studies are needed to consider it a standard approach.

[Functional urology during COVID-19: Recommendations during de-escalation.] / La urología funcional en la era COVID-19. Consejos para la desescalada.

OBJECTIVES: Due to the COVID-19 Pandemic, all surgical activity that was not life threatening was cancelled , as well as most face-to-face consultations. Currently the beginning of the de-escalation phases that will led us to a new normal, forces us to establish some degree of priority in the interventions as well as in the medical consultations. Our objective is to establish some recommendation on Functional Urology office visits and surgical interventions that serve as a tool to facilitate decision-making. MATERIAL AND METHODS: Experts in Functional Urology from different autonomous communities of Spain were contacted to design a strategy to reorganize the activity of both, diagnosis and treatment. A modified nominal group technique has been used due to the extraordinary restrictions of assembly and mobility during the COVID pandemic. The first signer (EMC) made the first draft with the measures adopted and the strategy to be followed during the evolution of the COVID-19 pandemic. The proposal was sent to the rest of the authors, in order to unify criteria and experiences to reach a quick consensus on the relative priority of the different activities, problems and solutions. A final version was approved by all authors May 27, 2020. RESULTS: Tables of recommendation have been prepared for outpatient consultation, surgical and technical interventions, according to de-escalation phases proposed by the Spanish Associations of Surgeons. CONCLUSIONS: The change that COVID-19 Pandemich as involved in our clinical practice force us to seek alternative methods to treat our patients, some of which may already be established. Mean while, a consensusin decision making is necessary. Documents such as the current one, are intended to guide the management of patients with urological functional pathology in exceptional situations. Logically, it should be adapted to material and human availability, and to the idiosyncrasy of each Urology service.

OBJETIVOS: Debido a la Pandemia COVID-19 se suspendió toda actividad quirúrgica que no fuera una urgencia vital, así como la mayoría de consultas presenciales. Actualmente el inicio de las fases dedesescalada que nos llevarán a una nueva normalidad nos obliga a establecer unos grados de prioridad en las intervenciones así como en las consultas médicas. Nuestro objetivo es establecer una serie de recomendaciones sobre las consultas de Urología Funcional y las intervenciones quirúrgicas que sirva como herramientade ayuda en la toma de decisiones.MATERIAL Y MÉTODOS: Expertos en Urología Funcionalde distintas comunidades autónomas de España fueron contactados para diseñar una estrategia parareorganizar la actividad tanto de diagnóstico como de tratamiento. Se ha utilizado una técnica de grupo nominal modificada debido a las restricciones extraordinarias de reunión y movilidad durante la pandemia COVID. El primer firmante (EMC) realizó el primer borrado rcon las medidas adoptadas y la estrategia a seguir durante la evolución de la pandemia COVID19. Se remitió la propuesta al resto de autores, con el fin de unificar criterios y experiencias para llegar a un rápido consenso sobre la importancia relativa de las distintas actividades, problemas y soluciones. Se realizó una versión definitiva, aprobada por todos los autores, el día 27 de mayo de 2020. RESULTADOS: Se han elaborado tablas de recomendaciones tanto para consultas externas, como para intervenciones quirúrgicas y técnicas, de acuerdo con las fases de desescalada propuestas por la Asociación Española de Cirujanos (AEC). CONCLUSIONES: El cambio que ha supuesto la Pandemia COVID-19 en nuestra práctica clínica nos obliga a buscar métodos alternativos para seguir y tratar a nuestros pacientes, algunos de los cuales pueden ya quedar instaurados. Mientras, es necesario un consenso en la toma de decisiones. Documentos como el actual, pretenden orientar en el manejo de los pacientes con patología funcional urológica en situaciones excepcionales. Lógicamente, deberá adaptarse alas disponibilidades materiales y humanas, y a la idiosincrasia de cada servicio de Urología.

La urología funcional en la era COVID-19. Consejos para la desescalada / Functional urology during COVID-19: Recommendations during de-escalation

OBJETIVOS: Debido a la Pandemia COVID-19 se suspendió toda actividad quirúrgica que no fuera una urgencia vital, así como la mayoría de consultas presenciales. Actualmente el inicio de las fases dedesescalada que nos llevarán a una nueva normalidad nos obliga a establecer unos grados de prioridad en las intervenciones así como en las consultas médicas. Nuestro objetivo es establecer una serie de recomendaciones sobre las consultas de Urología Funcional y las intervenciones quirúrgicas que sirva como herramientade ayuda en la toma de decisiones. MATERIAL Y MÉTODOS: Expertos en Urología Funcionalde distintas comunidades autónomas de España fueron contactados para diseñar una estrategia parareorganizar la actividad tanto de diagnóstico como de tratamiento. Se ha utilizado una técnica de grupo nominal modificada debido a las restricciones extraordinarias de reunión y movilidad durante la pandemia COVID. El primer firmante (EMC) realizó el primer borrado rcon las medidas adoptadas y la estrategia a seguir durante la evolución de la pandemia COVID19. Se remitió la propuesta al resto de autores, con el fin de unificar criterios y experiencias para llegar a un rápido consenso sobre la importancia relativa de las distintas actividades, problemas y soluciones. Se realizó una versión definitiva, aprobada por todos los autores, el día 27 de mayo de 2020. RESULTADOS: Se han elaborado tablas de recomendaciones tanto para consultas externas, como para intervenciones quirúrgicas y técnicas, de acuerdo con las fases de desescalada propuestas por la Asociación Española de Cirujanos (AEC). CONCLUSIONES: El cambio que ha supuesto la Pandemia COVID-19 en nuestra práctica clínica nos obliga a buscar métodos alternativos para seguir y tratar a nuestros pacientes, algunos de los cuales pueden ya quedar instaurados. Mientras, es necesario un consenso en la toma de decisiones. Documentos como el actual, pretenden orientar en el manejo de los pacientes con patología funcional urológica en situaciones excepcionales. Lógicamente, deberá adaptarse alas disponibilidades materiales y humanas, y a la idiosincrasia de cada servicio de Urología

OBJECTIVES: Due to the COVID-19 Pandemic, all surgical activity that was not life threatening was cancelled, as well as most face-to-face consultations. Currently the beginning of the de-escalation phases that will led us to a new normal, forces us to establish some degree of priority in the interventions as well as in the medical consultations. Our objective is to establish some recommendation on Functional Urology office visits and surgical interventions that serve as a tool to facilitate decision-making. MATERIAL AND METHODS: experts in Functional Urology from different autonomous communities of Spain were contacted to design a strategy to reorganize the activity of both, diagnosis and treatment. A modified nominal group technique has been used due to the extraordinary restrictions of assembly and mobility during the COVID pandemic. The first signer (EMC) made the first draft with the measures adopted and the strategy to be followed during the evolution of the COVID-19 pandemic. The proposal was sent to the rest of the authors, in order to unify criteria and experiences to reach a quick consensus on the relative priority of the different activities, problems and solutions. A final version was approved by all authors May 27, 2020. RESULTS: tables of recommendation have been prepared for outpatient consultation, surgical and technical interventions, according to de-escalation phases proposed by the Spanish Associations of Surgeons. CONCLUSIONS: The change that COVID-19 Pandemic has involved in our clinical practice force us to seek alternative methods to treat our patients, some of which may already be established. Meanwhile, a consensus in decision making is necessary. Documents such as the current one, are intended to guide the management of patients with urological functional pathology in exceptional situations. Logically, it should be adapted to material and human availability, and to the idiosyncrasy of each Urology service

Orthotopic Renal Transplantation: Indication, Technique and Outcomes.

PURPOSE OF REVIEW: Nowadays many ESRD patients awaiting kidney transplantation have known unsuitable iliac vessels for vascular anastomosis, due to severe atheromatosis, occupied iliac fossa, or other uncommon vascular abnormalities. In these cases, orthotopic kidney transplantation (OKT) could be the solution. RECENT FINDINGS: Since the update on OKT published in 2010, no more large series have been reported. Some small series or case reports being described in the literature. The orthotopic position has shown good recipient and graft results with acceptable complication rate in selected patients. This technique permits the possibility of kidney transplantation, in patients unfit for heterotopic kidney transplantation (HKT), and consequently the avoidance of the dialysis treatment. In this paper, we review what is new in the literature, analyzing indications, technique, and results of this surgical approach.