Minerva Urology and Nephrology最新文献

Background: The aim of this study was to report our technique and medium-term outcomes of modified robot-assisted laparoscopic dismembered pyeloplasty (RALDP) in the Lithotomy Trendelenburg position for treating adult ureteropelvic junction obstruction (UPJO) with horseshoe kidney (HSK).

Methods: Between March 2021 and March 2023, 11 adult patients with UPJO and HSK underwent modified RALDP in the lithotomy Trendelenburg position. Patient demographic characteristics, perioperative parameters, and follow-up outcomes were collected prospectively and analyzed. A detailed description of the technique and medium-term outcomes were reported.

Results: The median (range) age was 33 (23-50) years. The mean preoperative serum creatinine and preoperative estimated glomerular filtration rate (eGFR) were 74.72±16.20 μmol/L and 100.4±16.5 mL/min/1.73 m², respectively. One patient (9.1%) required an additional right pyelolithotomy. The mean operative duration was 208±70 min. The median (range) estimated blood loss was 20 (20-100) mL. The median (range) drainage-tube removal time was 3 (2-4) days postoperatively. The median (range) postoperative hospitalization period was 5 (3-6) days. No open conversions or intraoperative complications occurred. Postoperative urinary tract infections (Clavien-Dindo grade II) occurred in two patients, managed with oral antibiotics. The median (range) follow-up of 25 (12-36) months achieved an overall success rate of 100%. The mean postoperative serum creatinine and postoperative eGFR were 74.96±17.43 μmol/L and 98.14±18.39 mL/min/1.73 m², respectively.

Conclusions: Our medium-term outcomes indicate that the modified RALDP in the Lithotomy Trendelenburg position was safe and feasible for adult HSK patients. Further prospective studies of larger sample sizes and randomized controlled trials are warranted.

Background: Penile cancer is a relatively rare neoplasm in developed countries, with the majority of newly diagnosed cases presenting as organ-confined, with a 5-year survival rate of 90%. Therefore, it is crucial to consider the impact of penile tumor resection on sexual and urinary function. Regrettably, the literature is devoid of comprehensive, step-by-step video instructions for the surgical procedure of partial penectomy with reconstruction using a split-thickness skin graft (0.3 mm). This study aimed to demonstrate a step-by-step video of the partial penectomy technique with reconstruction using a split-thickness skin graft and to present the outcomes of this procedure.

Methods: This multicenter study was initiated in April 2019 and completed in February 2023, enrolling 54 male patients who underwent partial penectomy and reconstruction using a split-thickness skin graft (0.3 mm). The study collected data on the local recurrence rates, overall survival, sexual and voiding functions and complications.

Results: The average patient age was 61.26 years old (range: 26-82 years). Following penile-sparing surgery, a substantial proportion of patients exhibited favorable results. Among the 54 patients, 37 (68.5%) were classified as sexually active and 50 (92.6%) demonstrated good voiding function. Excellent cosmetic outcomes were achieved in 52 patients (96.3%), and the average size of the negative resection margins was 4.75±4.162 mm (range: 0.5 to 20 mm). Notably, no positive margins were observed. Patient outcomes depend on the tumor stage and histologic grade rather than the size of the surgical margin.

Conclusions: Partial penectomy with reconstruction using a split-thickness skin graft has excellent oncological, functional, and cosmetic outcomes.

Background: The aim of this study was to validate lymphovascular invasion (LVI) as a predictor of lymph-node invasion (LNI) in squamous cell carcinoma of the penis (SCCP).

Methods: Within the Surveillance, Epidemiology, and End Results database (2010-2020), we identified SCCP patients who underwent lymphadenectomy with known LVI status. Univariable logistic regression models (LRMs) addressed LNI. Harrell's concordance index (c-index) quantified accuracy after 2000 bootstrap resamples for internal validation. Multivariable LRMs included the most informative, statistically significant predictors. Subgroup analyses were repeated in organ-confined (T1b-T2) and non-organ confined (T3-T4) stages.

Results: Of 586 SCCP patients, 219 (37%) had LVI. LVI was associated with higher rate of LNI (66 vs. 43%; P<0.001). Positive predictive value of LVI was 66 vs. 57% for negative predictive value. In multivariable LRMs, LVI independently predicted LNI (Odds ratio [OR]: 2.41; P<0.001). Bootstrap-adjusted c-index of multivariable model was 0.570 without LVI vs. 0.639 with LVI. In subgroup analyses, LVI independently predicted LNI in organ-confined (OR: 2.23; P<0.001) and in non-organ confined stages (OR: 3.10; P<0.001). In subgroup analyses, addition of LVI increased c-index from 0.530 to 0.595 in organ-confined and from 0.599 to 0.682 in non-organ confined.

Conclusions: The current study validates LVI as an independent predictor of LNI in SCCP. LVI increases the accuracy of LNI predictions in the overall cohort as well as in organ-confined and non-organ confined stages. However, stage and grade even with the added consideration of LVI are not accurate enough to provide LNI prediction in individual patients.

Background: Rezūm is a novel minimally invasive surgical technique (MIST) useful for BPH patients with medium-sized prostate (30-80 cm³) refractory to medical treatment. The aim of this study was to evaluate the efficacy and safety of Rezūm as a treatment option in large-sized prostates (>80 cm³).

Methods: We performed a prospective, comparative, single-center study from June 2022 to June 2023, including consecutive patients undergoing surgery with the Rezūm System. Enrolled men were classified into two subgroups based on prostate size: medium prostate (MP) (30-80 cm³) and large prostate (LP) (≥80 cm³). Inclusion criteria included an International Prostate Symptom Score (IPSS) Total score of ≥ 8 points. International Prostate Symptom Score (IPSS), maximum urinary flow rate (Qmax), post-void residual (PVR), and International Index of Erectile Function 5-item version (IIEF-5) were collected at baseline and at three, six, and 12 months post-procedure. Ejaculation presence was assessed at 3 months. Post-operative complications were described using the Clavien-Dindo (CD) classification. The primary outcome was the IPSS-Total score, with intraoperative and postoperative CD grade ≥III complications as secondary outcomes.

Results: One hundred and twenty-one patients (PV 78.2±32.1 mL) were included in the study, 51 large prostate (LP) and 70 medium prostate (MP). The IPSS-Total score and Qmax showed a statistically significant (P<0.0001) improvement at 3, 6, and 12 months respectively. PVR decreased at 3, 6, and 12 months; however, only at 3 months this variation was statistically significant (P<0.0001). At 3-month follow-up, anejaculation was detected in (3; 5.8% and 1; 1.4%) patients in LP and MP group respectively (P=0.86). IIEF-5 significantly improved 3 months after surgery in the LP subgroup (P<0.0001).

Conclusions: Rezūm water vapor therapy appears to be effective for treating BPH in larger prostates. Additionally, it demonstrates a low risk of impairing sexual function, indicating a favorable safety profile.

Background: Augmentation cystoplasty (AC) is a useful alternative for the treatment of neuropathic bladder, although there are few studies reporting long-term results. We assess our experience over the last 30-years.

Methods: A retrospective study was conducted in patients with neuropathic bladder in whom AC was performed in our institution between 1990-2020. Demographic variables, pre- and post- AC urodynamic studies, long-term outcomes and postoperative complications were collected.

Results: Eighty-six patients (43 males and 43 females) underwent AC surgery with a median age of 12.8 years (interquartile range 9.6-15.1). Bladder augmentation was performed with ileum in 49 cases (57%), sigma in 32 cases (37.2%) and ureter in 5 cases (5.8%). In 27 patients an artificial urinary sphincter (AUS) was placed at the same intervention. The mean preoperative bladder capacity was 117 mL (SD 40), which was increased to 430 mL (SD 64) one year after surgery, this difference being statistically significant (P<0.001). Median follow-up was 24.5 years (interquartile range 17.5-26). Vesico-ureteral reflux improved after AC in 78.9% with no other surgical interventions. Seven mechanical complications associated with AUS were reported. Bladder lithiasis was reported in 9 patients. No bladder perforations were described. One patient developed bladder squamous cell carcinoma 16 years after AC, requiring radical cystectomy and Hautmann neobladder.

Conclusions: Long-term results of this study demonstrate that AC is an effective surgical treatment in patients with neuropathic bladder patients without proper response to medical treatment. The risk of developing complications long after bladder augmentation makes close clinical follow-up of these patients essential.

Background: The aim of this study was to describe the technique and initial outcomes of robot-assisted T-plasty for recalcitrant bladder neck stenosis.

Methods: Patients who underwent robot-assisted T-plasty for recalcitrant bladder neck stenosis in a single center were included. Presence of bladder neck stenosis was preoperatively confirmed by the combination of retrograde urethrography with voiding cysto-urethrography and flexible urethroscopy. Follow-up visits were performed with history taking, uroflowmetry and echographic residual urine measurement. Complications were graded according to the Clavien-Dindo classification. Patients without urinary symptoms and with a maximum uroflow of no less than 15mL/s were considered as successfully treated. Otherwise, cystoscopy would be performed, and recurrence was defined as the inability to pass a 14 French cystoscope through the bladder neck.

Results: Since 2018, seven patients were treated. The etiologies were transurethral resection of the prostate and simple prostatectomy in respectively 6 patients and 1 patient. Cystoscopy was able to diagnose bladder neck stenosis in all cases whereas urethrography was equivocal in 3 out of 7 cases. Median (range) age at surgery was 60 (54-75) years, and median number of prior endoscopic treatment for bladder neck stenosis was 3 (1-16). The median operative time was 123 (110-159) minutes. No intraoperative complications were reported. Three patients suffered a grade 2 complication. After a median follow-up of 27 (4-74) months, the recurrence-free rate was 100% with no evidence of de-novo incontinence or erectile dysfunction.

Conclusions: In our series, robot-assisted T-plasty suggests positive and safe outcomes in treating recalcitrant bladder neck stenosis with a good patency rate and low incontinence rate. Additionally, cystoscopy is reliable in the diagnosis of patients with inconclusive urethrography results.