Semen parameters in testicular tumor patients before orchiectomy: What is the impact of testicular tumor stage and histology?

PURPOSE

To evaluate the influence of testicular cancer histology and stage on sperm parameters in cryopreserved samples collected prior to orchiectomy.

MATERIALS AND METHODS

We conducted a retrospective analysis of tumor histology, stage and sperm parameters of patients who underwent pre-orchiectomy sperm cryopreservation for testicular cancer between March 2010 and March 2023. The World Health Organization (WHO) 2010 sperm reference values were used to identify patients with subnormal semen parameters and to further categorize patients by sperm alteration. Localized disease was classified as Stage I, while metastatic disease encompassed Stages II and III. Continuous variables were compared using t-test or Mann Whitney U test, and categorical variables using Chi-square and Fishers exact test.

RESULTS

A total of 64 patients was identified, 48 (75%) classified as stage I and 16 (25%) classified as stage II/III. No difference was found in semen parameters between patients with seminoma and patients with non-seminoma germ cell tumor (NSGCT). Patients with stage II/III disease had significantly lower percentages of progressive motility (36% vs 53%, p=0.021) and total motility (60% vs 69%, p=0.015) than stage I patients. When categorizing by sperm alterations according to WHO 2010 reference values, patients with stage II/III disease had significantly higher proportions of asthenozoospermia (38% vs 15%, p=0.048) and teratozoospermia (63% vs 31%, p=0.027) than stage I patients. Elevated tumor markers were not associated with sperm abnormalities.

CONCLUSIONS

Patients with metastatic testicular cancer present with worse sperm quality than patients with localized disease. Sperm cryopreservation should be offered to all patients with testicular cancer, and especially emphasized in patients with metastatic disease.

Transperitoneal vs. Retroperitoneal Approach in Laparoscopic Partial Nephrectomy for Posterior Renal Tumors: A Retrospective, Multi-Center, Comparative Study

Purpose: The aim of our study is to compare the perioperative, functional, and oncological outcomes of laparoscopic transperitoneal partial nephrectomy (LTPN) and laparoscopic retroperitoneal partial nephrectomy (LRPN) for posterior cT1 renal tumors. Methods: We retrospectively collected data on all patients who consecutively underwent LTPN and LRPN for posterior cT1 renal tumors in three different centers from January 2015 to January 2023. Patients with a single, unilateral, cT1 renal mass, located in the posterior renal surface were included. Patients' data regarding perioperative, functional, and oncological outcomes were collected from medical records and statistically analyzed and compared. Results: A total of 128 patients was obtained, with 53 patients in the LPTN group and 75 patients in the LRPN group. Baseline characteristics were similar. Warm ischemia time (WIT) (18.8 vs. 22.6 min, p = 0.002) and immediate postoperative eGFR drop (-6.1 vs. -13.0 mL/min/1.73 m2, p = 0.047) were significantly lower in the LPTN group. Estimated blood loss (EBL) (100 vs. 150 mL, p = 0.043) was significantly lower in the LRPN group. All other perioperative and functional outcomes and complications were similar between the groups. The positive surgical margin (PSM) rate was lower in the LRPN group, although without statistical significance (7.2% vs. 13.5%, p = 0.258). Surgical success defined by Trifecta (WIT ≤ 25 min, no PSM, and no major postoperative complication) was similar between both approaches. Conclusions: LTPN has significantly shorter WIT and a significantly smaller drop in immediate eGFR when compared to LRPN for posterior renal tumors. On the other hand, LRPN has significantly less EBL than LTPN. LRPN demonstrated fewer PSMs than LTPN, albeit without statistical significance. In terms of overall surgical success, as defined by Trifecta, both approaches achieved similar results.

Outcomes of Urinary Tract Endometriosis-Laparoscopic Treatment: A 10-Year Retrospective Study

INTRODUCTION

Urinary tract endometriosis (UTE), a rare manifestation, encompasses bladder and ureteral involvement. Surgical intervention is commonly recommended for UTE, though the optimal surgical approach remains a subject of debate. This study aims to report our centre's experience with UTE.

METHODS

We conducted a retrospective cohort study of 55 patients who underwent surgical treatment for UTE at a single tertiary centre over a 10-year period (2012-2022). Patient data, including demographics, symptoms, intraoperative findings, and complications, were collected from medical records. Data were statistically analysed, and correlations were explored.

RESULTS

The study population had a mean age of 37.11 years, with dysmenorrhea (89.1%) being the most common symptom. Bladder endometriosis was present in 27 cases, ureteral endometriosis in 25, and mixed-location in 3. Laparoscopy was the primary surgical approach, with multidisciplinary teams involving urologists. There were six patients with postoperative complications, and there were six (10.9%) recurrences of endometriosis. A positive correlation was found between age and recurrence, but no significant predictors of recurrence were identified in our analysis.

CONCLUSIONS

Laparoscopic treatment of urinary endometriosis is safe and effective. Multidisciplinary collaboration plays a pivotal role in addressing this challenging condition.

Extraperitoneal robot-assisted radical prostatectomy with the Hugo™ RAS system: initial experience of a tertiary center with a high background in extraperitoneal laparoscopy surgery

PURPOSE

The Hugo™ RAS system is a novel robotic platform with innovative features. However, there are currently no available data on extraperitoneal robot-assisted radical prostatectomy (RARP) performed using this system. The objective of this study is to describe the surgical setup and assess the safety and feasibility of the extraperitoneal approach in robotic radical prostatectomy with the Hugo™ RAS system.

METHODS

Sixteen consecutive patients diagnosed with localized prostate cancer underwent extraperitoneal RARP ± lymph node dissection at our institution, between March and May 2023. All RARP procedures were performed extraperitoneal with a modular four-arm configuration. The focus was to describe the operative room setup, trocar placement, tilt and docking angles and evaluate the safety and feasibility of this approach with this robotic platform. Secondary outcomes recorded included, total operative time, console time, estimated bleeding, intra- and postoperative complications, and length of stay after surgery. A descriptive analysis was conducted.

RESULTS

We report on the first sixteen cases of extraperitoneal robot-assisted radical prostatectomy performed with the new Hugo™ RAS system. All procedures were completed, without the need for conversion or placement of additional ports. No intraoperative complications or major technical failures that would prevent the completion of surgery were recorded. The median operative time was 211 min (IQR 180-277), and the median console time was 152 min (IQR 119-196). The mean docking time was 4.6 min (IQR 4.1-5.2). The median estimated blood loss and the median time to remove the vesical catheter were 200 mL (IQR 150-400) and 8 days (IQR 7-8), respectively. The median length of stay was 2 days (IQR 2-2). Only one minor complication was registered in the first 30 days.

CONCLUSION

This study provides evidence of the safety and feasibility of the extraperitoneal approach in RARP with the Hugo™ RAS system. The description of the surgical setup in terms of trocar placement, arm-cart disposition, tilt and docking angles offers valuable information for surgeons interested in adopting this surgical approach with the Hugo™ RAS platform.

Renal Artery Thrombosis After Laparoscopic Living-Donor Nephrectomy: A Case Report

Renal transplantation is the most successful treatment for end-stage renal disease, and the number of living-donor nephrectomies has been rising over the years due to the advantages it offers over deceased donors. Although this surgery is considered safe, it can be associated with complications amplified by the fact that it is performed on a healthy individual. Renal artery thrombosis is a rare disease that needs prompt diagnosis and treatment to avoid renal function deterioration, which becomes even more important in cases of solitary kidneys. We report the first case of renal artery thrombosis after laparoscopic living-donor nephrectomy treated with catheter-directed thrombolysis.

Robot-assisted vesicovaginal fistula repair: comparison of the extravesical and transvesical techniques

INTRODUCTION AND OBJECTIVES

Almost two decades after the description of robotic vesicovaginal fistula repair (R-VVF), the literature remains limited. The aims of this study are to report the outcomes of R-VVF and to compare the transvesical versus extravesical techniques.

METHODS

We performed an observational, retrospective, multicenter study, including all patients who underwent R-VVF from March 2017 to September 2021 at four academic institutions. All abdominal VVF repair over the study period were performed using a robotic approach. The success of R-VVF was defined as the absence of clinical recurrence. The outcomes of the extravesical versus transvesical techniques were compared.

RESULTS

Twenty-two patients were included. The median age was 43 years old (IQR 38-50). Fistulas were supratrigonal and trigonal in 18 and 4 cases respectively. Five patients had undergone previous attempts of fistula repair (22.7%). The fistulous tract was systematically excised, and an interposition flap was used in all but two cases (90.9%). The transvesical and extravesical techniques were used in 13 and 9 cases respectively. There were four postoperative complications, three minor and one major. None of the patients had vesicovaginal fistula recurrence after a median follow-up of 15 months.

CONCLUSIONS

The present series, one of the largest R-VVF reported to date, is consistent with the few series already published with a 100% cure rate. Systematic excision of the fistulous tract and the high rate of flap interposition may explain the high success rate. The transvesical and extravesical approaches yielded similar outcomes.

How the COVID-19 pandemic changed urology residency - a nationwide survey from the Portuguese resident's perspective

Introduction

The aim of this article was to evaluate the impact of the COVID-19 pandemic on urology residency.

Material and methods

A 30 question online survey was sent to all urology residents in Portugal between the 25^th of April and the 25^th of May 2020. Reduction in different areas of clinical activity during the COVID-19 period were evaluated and their perceived impact on their residency program was quantified.

Results

Forty-three (54.4%) Portuguese urology residents responded to our inquiry. Eighty-one percent report having supressed their activity by more than 75% in the outpatient clinic; 48.8% in diagnostic procedures; 29.3% in endoscopic surgery; 67.5% in laparoscopic/robotic surgery and 17.5% in major open surgery. There were no differences in clinical activity reduction across residency years. Considering the impact of COVID-19 on urology training programs, 32.6% plan on prolonging residency. During the COVID-19 period, a larger number of residents report having spent more time developing research projects or on continuing medical education, as compared with the pre-COVID-19 period (p = 0.012).

Conclusions

COVID-19 had a major impact on Urology residency in Portugal, with major short- and long-term consequences. A large proportion of residents are considering prolonging their residency as a result.

Remaining kidney volume indexed to weight as a strong predictor of estimated glomerular filtration rate at 1 year and mid-term renal function after living-donor nephrectomy - a retrospective observational study

The donors' estimated glomerular filtration rate (eGFR) after living nephrectomy has been a concern, particularly in donors with smaller kindeys. Therefore, we developed this retrospective observational study in 195 donors to determine the ability remaining kidney volume indexed to weight (RKV/W) to predict eGFR at 1 year through multivariate linear regression and to explore this relationship between annual eGFR change from 1 to 4 years postdonation evaluated by a linear mixed model. Comparing RKV/W tertiles (T1, T2, T3), RKV/W was a good predictor of 1-year eGFR which was significantly better in T3 donors. Gender, predonation eGFR, and RKV/W were independent predictors of eGFR at 1-year. In a subgroup with predonation eGFR < 90mL/min/1.73 m² , a significant prediction of eGFR < 60mL/min/1.73 m² was detected in males with RKV/W ≤ 2.51cm³ /kg. Annual eGFR (ml/min/year) change from 1 to 4 years was + 0.77. RKV/W divided by tertiles (T1-T3) was the only significant predictor: T2 and T3 donors had an annual eGFR improvement opposing to T1. RKV/W was a good predictor of eGFR at 1 year, independently from predonation eGFR. A higher RKV/W was associated with improved eGFR at 1 year. A decline in eGFR on the four years after surgery was only noticeable in donors with RKV/W ≤ 2.13cm³ /kg.

The impact of the coronavirus disease 2019 pandemic on the utilisation of emergency urological services

OBJECTIVES

To compare the number of patients attending the Urology Emergency Department (ED) of the Centro Hospitalar Universitário do Porto (CHUP), as well as their demographic characteristics, the reasons for admission, the clinical severity under the Manchester triage system (MTS), and the need for emergency surgery or hospitalisation, during the coronavirus disease 2019 (COVID-19) pandemic and the equivalent period in 2019.

PATIENTS AND METHODS

Data were collected from patients attending the Urology ED of the CHUP over 3 weeks, from 11 March to 1 April 2020, and from the same period in the previous year (from 11 March to 1 April 2019).

RESULTS

During the pandemic, 46.4% fewer patients visited our urological ED (122 vs 263). There was no significant difference in the mean age or the number of old patients (aged ≥65 years) between the two periods. However, significantly fewer female patients sought emergency urological services during the COVID-19 pandemic period (32.7% vs 14.8%, P < 0.05). No significant differences were noted between different clinical severity groups under the MTS. In 2019, significantly less patients required hospitalisation. The most common reasons for admission, during both periods, were haematuria, renal colic and urinary tract infections. The authors recognise that the study has several limitations, namely, those inherent to its retrospective nature.

CONCLUSION

COVID-19 significantly influenced people's urological care-seeking behaviour. Understanding the present situation is helpful for predicting future urological needs. Based on the results of this study, we have reason to speculate that people's requirements for urological services might grow explosively in the post-COVID-19 period. There should be further studies about the real state of long-term urological services and the consequences that this pandemic may have in terms of morbimortality not directly related to the severe acute respiratory syndrome coronavirus 2.

P1715CORRELATION OF DONATED KIDNEY MASS AND GRAFT FUNCTION IN RECIPIENTS OF LIVING DONOR KIDNEY TRANSPLANTATION

Background and Aims

Kidney volume has been proven to be a surrogate marker of nephron mass and renal function in living donors. Although many studies correlate the kidney mass with renal donors’ function after donation, few studies have compared the donated kidney mass with estimated glomerular filtration rate (eGFR) in the kidneýs recipients.

The purpose of this study is to examine the relationship between donor kidney volume and post-transplantation graft function by using computerized tomography to obtain renal volumes.

Method

Clinical data off all donor and recipient pairs undergoing live donor kidney transplantation (KT) at our institution between January 2008 and December 2017 (n=195) were reviewed. The volume of the kidney selected for transplant was determined using volume calculating software and correlate to transplant recipient eGFR.

Results

All metrics of donor kidney volume (DKV): DKV alone, ADK adjusted for weight, body mass index (BMI) or body surface area (BSA), correlated significantly with eGFR (all with p&lt;0,001) at 1 year after KT, with DKV/BSA having the highest correlation (r=0,431). Hence, recipients were divided into terciles according their DKV/BSA (cm3/m2): tercile 1 (DKV/BSA between 49,7-77,5, n=64), tercile 2 (78-95,2, n=63) and tercile 3 (95,4-176, n=63). eGFR differences between groups at each time point were all significant (P&lt;0.05), except for the comparison between T1 and T2 at month 6 (figure 1)

Significant risk factors for eGFR&lt;60 ml/min at 1-year were: acute rejection (AR) at 1-year (OR=4.116, P=0.018); calculated PRA&gt;0% (OR=2.075, P=0.039); higher donor age (OR per unit=1.033, P=0.047); and peritoneal dialysis modality (in comparison with preemptive KT: OR=3.232, P=0.013). Higher (T3) DKV/BSA tercile (in comparison with T1: OR=0.306, P=0.004) was protective of this outcome.

Patients that experienced AR at 1-year had significantly lower DKV/BSA, particularly those with acute cellular rejection (ACR).

The median follow-up was 4,8 years (IQR: 3.2-7.5). The censored graft survival by DKV/BSA terciles at 10 years were 59,3% for group 1, 91.3% for group 2 and 91.1% for group 3 (figure 3).

Conclusion

Our study demonstrates that transplantation of donor-recipient pairs with lower DKV/BSA ratio were associated with significantly worse graft function and higher incidence of AR. This data suggests that a larger mass of nephrons remaining adjusted to recipient’s weight seems to predict a better long-term eGFR. This method can be useful in order to identify patients at risk for a low eGFR after KT and, in cases of multiple potential donors, optimize donor selection.

RETIRADO: El impacto de la pandemia de COVID-19 en la utilización de los servicios urológicos de urgencias

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