World Journal of Urology最新文献

Purpose: Due to its biological properties, the omentum is a very useful tool in the hands of reconstructive urologists. The purpose of this systematic review is to present all existing evidence regarding the use of omentum during different robotic-assisted reconstructive urological surgeries.

Methods: In accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Guidelines, three databases (PubMed, Scopus and Cochrane) were systematically screened. The following search string was used: (omentum OR omental) AND robotic. Retrospective studies and case-series were included, while case-reports were not included.

Results: 13 studies met all eligibility criteria and were included in final qualitative synthesis. Seven studies reported robotic vesicovaginal fistula repair, two studies reported robotic vesicouterine or vesicocervical fistula repair, one study reported robotic rectovesical fistula repair, one study reported robotic rectourethral fistula repair, one study reported ureterolysis with omental wrap and one study reported robotic repair of long ureteral strictures with omental wrap and autologous onlay flap or graft ureteroplasty. Recurrence rates ranged from 0% to 6.7%. The Grade I-II complications according to Clavien-Dindo Classification ranged from 0 to 40%, while no Grade III-IV were reported.

Conclusion: Robotic repair with the use of omentum is potentially a feasible, safe and efficient approach for complicated urological surgeries, such as vesicovaginal, vesicouterine, vaginocervical, rectovesical and rectourethral fistulas, idiopathic retroperitoneal fibrosis and long ureteral strictures. Because the evidence is based on small case series, further publications are needed to enhance confidence in omental harvesting and render it a routine component of reconstructive Urology.

Introduction: Although weight loss is known to alleviate urinary incontinence (UI) symptoms, the effects of sex and body size on this relationship remain insufficiently explored.

Materials and methods: We analyzed data from the National Health and Nutrition Examination Survey (NHANES) 2007-2018, comprising 28,161 participants. Weighted logistic regression analysis, fitted curves, and subgroup analysis were used to assess the association between the percentage of weight loss and UI. Propensity score matching (PSM) was performed to account for potential confounding factors.

Results: After PSM, multivariate logistic regression showed an inverse relationship between weight loss percentage and UI risk (odds ratio [OR] = 0.97, 95% confidence interval [CI]: 0.94-0.99). Compared with weight loss percentages < 0%, the risk of UI significantly decreased with weight loss percentages > 5% (weight loss percentage 5.1-10%: OR = 0.83, 95% CI: 0.70-1.00; weight loss percentage 10.1-15%: OR = 0.73, 95% CI: 0.55-0.97; weight loss percentage > 15%: OR = 0.52, 95% CI: 0.39-0.70). Furthermore, subgroup analysis indicated that this relationship was more significant in males and non-overweight/non-obese populations.

Conclusion: There was an inverse relationship between weight loss percentage and UI risk, with noticeable differences based on sex and body size. However, these findings warrant further investigation.

Purpose: To compare the oncological outcomes between standard radical cystectomy (SRC) and organ-sparing cystectomy (OSC) in male patients diagnosed with bladder cancer.

Methods: Patients with stage Ta-T3 bladder cancer who underwent OSC or SRC were identified from the Surveillance, Epidemiology, and End Results (SEER) database between 2004 and 2015. The association between preoperative factors and the implementation of OSC was analyzed using logistic regression. Propensity score matching (PSM) was employed to balance baseline characteristics between the two groups. Patients' overall survival (OS) and cancer-specific survival (CSS) were estimated using the Kaplan-Meier method. Subgroup analyses based on the T stage were also conducted.

Results: A total of 7264 patients were included, with 96.8% (7033 patients) receiving SRC and 3.2% (231 patients) receiving OSC. Patients with higher T stages and high-grade tumors were less likely to undergo OSC. After PSM, OSC was associated with significantly worse OS and CSS than SRC. Subgroup analysis revealed that OSC did not lead to worse OS and CSS in non-muscle invasive bladder cancer and T2 stage patients, but it resulted in significantly worse outcomes in T3 stage patients.

Conclusion: Our study indicates that OSC is associated with poorer oncological outcomes compared to SRC, particularly in patients with advanced-stage tumors. These findings suggest the need for stringent selection criteria for OSC in bladder cancer patients. Given the negative impact on prognosis, stage T3 should potentially be considered a contraindication for OSC. Further evidence is required to confirm these assertions.

Purpose: To investigate functional, oncological and complication outcomes in women undergoing robot-assisted cystectomy (RARC) with intracorporeal orthotopic neobladder.

Methods: From a multi-institutional database, we identified females with bladder cancer treated with RARC and intracorporeal orthotopic neobladder. We evaluated the continence rate, short-term oncological outcomes, and complication rates. Analyses were repeated and stratified by the status of preserving gynecological organs.

Results: The study involved 146 patients with the median age 60 years (IQR, 51-66 years). Pelvic organ-preserving procedure (POP) was performed in 77 patients (53%). Overall daytime and nighttime continence rates were 54% and 53%, respectively. For POP, the continence rate was 58% for both daytime and nighttime continence. In the non-POP cohort, the continence rate was 50% for daytime and 49% for nighttime continence. Both groups had balanced positive surgical margin rates (5,3% for POP and 4,7% for non-POP). In the whole cohort, high-grade (Clavien-Dindo ≥3) early and late complication rate was 7,5% and 7,5%, respectively.

Conclusions: Robot-assisted radical cystectomy with intracorporeal orthotopic neobladder in females demonstrate excellent functional and complication outcomes. Pelvic organ-preserving cystectomy enhances urinary continence rates without adversely affecting surgical margins. Orthotopic neobladder in selected women with bladder cancer, along with pelvic organ-preserving cystectomy may be used for improved functional outcomes without compromising oncological results.

Purpose: High-risk localized prostate cancer (HRLPC) commonly progresses to metastatic disease after local treatment. Neoadjuvant androgen deprivation therapy (nADT) before radical prostatectomy (RP) has recently been suggested to improve early oncological outcomes in HRLPC. We aimed to perform an exploratory analysis of the pathological outcomes from a prospective trial testing nADT before RP.

Methods: Prospective, single-centered, phase II, randomized trial performed between October 2018 and July 2021. Random assignment (1:1) for nADT modalities: goserelin (10.8 mg) plus abiraterone acetate (1000 mg/d) plus prednisone (5 mg/d), with or without apalutamide (240 mg/d) for 12 weeks, followed by RP (within 30 days) and extended lymph node dissection. Baseline clinical and pathological variables were assessed in needle biopsies before nADT. Tumor regression was histologically evaluated in surgical specimens using the residual cancer burden index (RCB).

Results: Sixty-two patients reached the surgical phase. Good response (RCB ≤ 0.25 cm³) was achieved in 14 patients (22.5%). Overall stage migration rate between baseline status (MRI before nADT) and final status (after surgery) was 27.4%. Late stage detection (high tumor burden, perineural invasion) and altered PTEN/ERG immunostatus showed significant association with poor response in univariate analysis. Higher baseline tumor burden was the only independent factor related to poor response in multivariate analysis.

Conclusions: There are subgroups of patients, such as those with low baseline cancer burden and PTEN/ERG wild-type status, more likely to achieve good response with nADT. In the case of long term oncological benefit to be proven, nADT might be an additional therapeutic resource for these patients.

Purpose: Metastatic castration-resistant prostate cancer (mCRPC) patients harbor reduced life expectancy after first-line treatment progression. Currently, no information is available regarding the influence of metastatic sites and osseous burden on progression-free (PFS) and overall survival (OS) of mCRPC patients.

Methods: We relied on the Frankfurt Metastatic Cancer Database of the Prostate (FRAMCAP) database to select patients progressing to mCRPC and stratified them according to lymph node vs. osseous vs. visceral metastatic sites. Moreover, we stratified osseous mCRPC patients regarding the number of metastatic lesions. Endpoints were PFS and OS in uni- and multivariable Cox regression models.

Results: Of 363 patients, 9.4% harbored M1a vs. 78% M1b vs. 12% M1c mCRPC with significantly higher PSA in M1b (9 vs. 22 vs. 8ng/ml). Rates of DeNovo (15% vs. 60% vs. 56%) were significantly lower in the M1a mCRPC group, compared to M1b and M1c (p < 0.001). In PFS analyses, a median of 12.7 vs. 10.1 vs. 15.9 months for M1a vs. M1b vs. M1c mCRPC was observed (p > 0.05). In multivariable Cox regression models, M1c mCRPC was independently at higher risk for progression (hazard ratio [HR]: 5.93, p = 0.048), relative to M1a. Regarding OS, significant differences were observed (p = 0.002), with median OS of 58 vs. 42 vs. 25 months for M1a vs. M1b vs. M1c mCRPC and corresponding HRs of 1.54 (p = 0.11) and 2.76 (p < 0.01). In multivariable models M1c mCRPC was associated with higher risk of death (HR: 3.56, p = 0.049), relative to M1a. No differences were observed after stratification according to number of bone lesions (all p ≥ 0.05).

Conclusion: M1c mCRPC patients are independently at higher risk for progression and death, while M1a patients harbor best cancer-control outcomes.

Purpose: To create a machine-learning model for estimating the likelihood of post-retrograde intrarenal surgery (RIRS) sepsis.

Methods: All consecutive patients with kidney stone(s) only undergoing RIRS in 16 centers were prospectively included (January 2022-August 2023).

Inclusion criteria: adult, renal stone(s) only, CT scan (within three months), mid-stream urine culture (within 10 days).

Exclusion criteria: concomitant ureteral stone, bilateral procedures. In case of symptomatic infection/asymptomatic bacteriuria, patients were given six days of antibiotics according to susceptibility profiles. All patients had antibiotics prophylaxis. Variables selected for the model: age, gender, age-adjusted Charlson Comorbidity Index, stone volume, indwelling preoperative bladder catheter, urine culture, single/multiple stones, indwelling preoperative stent/nephrostomy, ureteric access sheath, surgical time. Analysis was conducted using Python programming language, with Pandas library and machine learning models implemented using the Scikit-learn library. Machine learning algorithms tested: Decision Tree, Random Forest, Gradient Boosting. Overall performance was accurately estimated by K-Fold cross-validation with three folds.

Results: 1552 patients were included. There were 20 (1.3%) sepsis cases, 16 (1.0%) septic shock cases, and three more cases (0.2%) of sepsis-related deaths. Random Forest model showed the best performance (precision = 1.00; recall = 0.86; F1 score = 0.92; accuracy = 0.92). A web-based interface of the predictive model was built and is available at https://emabal.pythonanywhere.com/ CONCLUSIONS: Our model can predict post-RIRS sepsis with high accuracy and might facilitate patient selection for day-surgery procedures and identify patients at higher risk of sepsis who deserve extreme attention for prompt identification and treatment.

Introduction: Benign prostatic obstruction (BPO) is one of the most common causes of male lower urinary tract symptoms. Some institutions routinely perform BPO surgeries in ambulatory setting, while others elect for overnight hospitalization. With the COVID-19 pandemic limiting resources and hospital space for elective surgery, we investigated the time trend of ambulatory BPO procedures performed around the COVID-19 outbreak.

Methods: We identified BPO surgeries from the California State Inpatient and State Ambulatory Surgery Databases between 2018 and 2020. Our primary outcome was the proportion of procedures performed in ambulatory settings with a length of stay of zero days. Univariable and multivariable analyses were performed to analyze factors associated with ambulatory surgery around the COVID-19 outbreak. Spline regression with a knot at the pandemic outbreak was performed to compare time trends pre- and post-pandemic.

Results: Among 37,148 patients who underwent BPO procedures, 30,067 (80.9%) were ambulatory. Before COVID-19, 80.1% BPO procedures were performed ambulatory, which increased to 83.4% after COVID-19 outbreak (p < 0.001). In multivariable model, BPO procedures performed after COVID-19 outbreak were 1.26 times more likely to be ambulatory (OR 1.26, 95% CI 1.14-1.40, p < 0.0001). Spline curve analysis indicated significantly different trend of change pre- and post-pandemic (p = 0.006).

Conclusions: We observed a rising trend of BPO surgeries performed in ambulatory setting post-pandemic. It remains to be seen if the observed ambulatory transition remains as we continue to recover from the pandemic.

Purpose: Prostate cancer is the second most diagnosed male malignancy in the U.S. 2,4-Dichlorophenoxyacetic acid (2,4-D) is a commonly used herbicide and potential carcinogen. The researchers evaluated the association between prostate cancer and 2,4-D.

Methods: Data was leveraged from the National Health and Nutrition Examination Survey (NHANES), a population-based, cross-sectional study of men and women in the U.S. Our cohort of interest was men aged 50 years and over. Urinary 2,4-D served as the measure of exposure. Our primary outcome was history of prostate cancer based on an individual's reply of "yes" to either ever having been diagnosed with prostate cancer and/or having received treatment for prostate cancer. Chi-square, one-way analysis of variance (ANOVA), and multivariable, weighted logistic regression were used to analyze the relationship between 2,4-D and prostate cancer.

Results: We identified 1,788 eligible men, representing an estimated 691,709 men after survey weighting. The median 2,4-D level was 0.28 µg/L (IQR: 0.26-0.53), and the geometric mean was 0.38 µg/L. Increasing exposure of 2,4-D was associated with prostate cancer (OR 1.72, 95% CI [1.2,2.4]). Individuals in the highest quartile of 2,4-D exposure had a higher odds of a prostate cancer diagnosis compared to the lowest quartile (OR = 3.46 95% CI [1.11,10.72]). Age stratification revealed statistically significant associations between 2,4-D and prostate cancer in men age 70 + who were in the highest quartile of exposure (OR = 3.79 95% CI [1.51,9.52]).

Conclusions: These findings implicate 2,4-D exposure in the risk of prostate cancer. Future studies are warranted to corroborate these findings and elucidate potential mechanisms underlying these associations.