INTRODUCTION: This research investigates the influence of the medical personnel shortage on the treatment of urolithiasis by comparing the complication rates in patients with urinary stones who undergo ureterorenoscopy with laser lithotripsy before and after the emergence of this unprecedented situation. METHODS: A total of 160 patients undergoing ureterorenoscopy with laser lithotripsy for urolithiasis were retrospectively evaluated, segmented into pre- and post-pandemic cohorts. Complications that occurred preoperatively (during the waiting period for operation), intraoperatively, and postoperatively were documented to compare the complication rates between the two cohorts. RESULTS: The investigation demonstrated a significant elevation of complications during the preoperative waiting period in the post-pandemic cohort (p < 0.001), concurrent with a substantial increase in the median waiting time from 20 days to 94 days (p < 0.001). No significant differences were present in intra- and postoperative complications between the two cohorts. CONCLUSION: In the new era of personnel shortage, increased complication rates during the preoperative waiting time were observed, concomitant with a significant increase in the waiting times for surgery. This novel challenge of increased preoperative morbidity also led to additional resource consumption. It is imperative to adapt the therapeutic landscape of urolithiasis to the new circumstances.

• Klíčová slova
• Complication, Laser lithotripsy, Personnel scarcity, Ureterorenoscopy, Urolithiasis, Waiting time,
• Publikační typ
• časopisecké články MeSH

A retrospective analysis of 136 patients, who were submitted rigid ureteroscopy for stone removal, was performed. Patients were divided into two groups. First group consisted of 63 patients with routine balloon dilation of intramural part of ureter before ureteroscopy. 73 patients of the second group were submitted ureteroscopy without previous ureter dilation. The total success rate was achieved in the first and second group of the patients in 90.5% and 91.8%. The success rate achieved in removing of the stone of upper, middle and lower part of the ureter was in the first group 81.8%, 88.9% and 94.1% and in the second group 78.6%, 95%, 94.9%, respectively. None of the patients have demonstrated vesico-renal reflux. With respect to our similar success rate in both of the groups they don't consider routine dilation of ureter as necessary before ureteroscopy.

• MeSH
• dospělí MeSH
• kameny v močovodu terapie   MeSH
• katetrizace * MeSH
• lidé středního věku MeSH
• lidé MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• ureteroskopie metody   MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• anglický abstrakt MeSH
• časopisecké články MeSH

CONTEXT: Endourological procedures frequently require fluoroscopic guidance, which results in harmful radiation exposure to patients and staff. One clinician-controlled method for decreasing exposure to ionising radiation in patients with urolithiasis is to avoid the use of intraoperative fluoroscopy during stone intervention procedures. OBJECTIVE: To comparatively assess the benefits and risks of "fluoroscopy-free" and fluoroscopic endourological interventions in patients with urolithiasis. EVIDENCE ACQUISITION: A systematic review of the literature from 1970 to 2022 was performed using the MEDLINE/PubMed, Embase, and Cochrane controlled trials databases and ClinicalTrials.gov. Primary outcomes assessed were complications and the stone-free rate (SFR). Studies reporting data on ureteroscopy and percutaneous nephrolithotomy (PCNL) were eligible for inclusion. Secondary outcomes were operative duration, hospital length of stay, conversion from a fluoroscopy-free to a fluoroscopic procedure, and requirement for an auxiliary procedure to achieve stone clearance. EVIDENCE SYNTHESIS: In total, 24 studies (12 randomised and 12 observational) out of 834 abstracts screened were eligible for analysis. There were 4564 patients with urolithiasis in total, of whom 2309 underwent a fluoroscopy-free procedure and 2255 underwent a comparative fluoroscopic procedure for treatment of urolithiasis. Pooled analysis of all procedures revealed no significant difference between the groups in SFR (p = 0.84), operative duration (p = 0.11), or length of stay (p = 0.13). Complication rates were significantly higher in the fluoroscopy group (p = 0.009). The incidence of conversion from a fluoroscopy-free to a fluoroscopic procedure was 2.84%. Similar results were noted in subanalyses for ureteroscopy (n = 2647) and PCNL (n = 1917). When only randomised studies were analysed (n = 12), the overall complication rate was significantly in the fluoroscopy group (p < 0.001). CONCLUSIONS: For carefully selected patients with urolithiasis, fluoroscopy-free and fluoroscopic endourological procedures have comparable stone-free and complication rates when performed by experienced urologists. In addition, the conversion rate from a fluoroscopy-free to a fluoroscopic endourological procedure is low at 2.84%. These findings are important for clinicians and patients, as the detrimental health effects of ionising radiation are negated with fluoroscopy-free procedures. PATIENT SUMMARY: We compared treatments for kidney stones with and without the use of radiation. We found that kidney stone procedures without the use of radiation can be safely performed by experienced urologists in patients with normal kidney anatomy. These findings are important, as they indicate that the harmful effects of radiation can be avoided during kidney stone surgery.

• Klíčová slova
• Flexible ureterorenoscopy, Flexible ureteroscopy, Fluoroless, Fluoroscopy, Fluoroscopy-free, Ionising radiation, Percutaneous nephrolithotomy, Radiation, Ureteroscopy,
• MeSH
• fluoroskopie MeSH
• ledvinové kameny * chirurgie   MeSH
• lidé MeSH
• urolitiáza * chirurgie   MeSH
• urologie * MeSH
• výsledek terapie MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• přehledy MeSH
• systematický přehled MeSH

• MeSH
• karcinom z přechodných buněk chirurgie   MeSH
• lidé MeSH
• nádory močového měchýře * MeSH
• nádory močovodu chirurgie   MeSH
• nefrektomie MeSH
• nefroureterektomie * MeSH
• ureter MeSH
• urologické nádory chirurgie   MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• dopisy MeSH
• komentáře MeSH

OBJECTIVES: To test for differences in overall and recurrence-free survival between laparoscopic and open surgical approaches in patients undergoing radical nephroureterectomy (RNU) for upper tract urothelial carcinoma (UTUC). MATERIALS AND METHODS: We retrospectively identified patients treated for UTUC from 2010 to 2020 from our institutional database. Patients undergoing laparoscopic or open RNU with no suspicion of metastasis (cM0) were for the current study population. Patients with suspected metastases at diagnosis (cM1) or those undergoing other surgical treatments were excluded. Tabulation was performed according to the laparoscopic versus open surgical approach. Kaplan-Meier plots were used to test for differences in overall and recurrence-free survival with regard to the surgical approach. Furthermore, separate Kaplan-Meier plots were used to test the effect of preoperative ureterorenoscopy on overall and recurrence-free survival within the overall study cohort. RESULTS: Of the 59 patients who underwent nephroureterectomy, 29% (n = 17) underwent laparoscopic nephroureterectomy, whereas 71% (n = 42) underwent open nephroureterectomy. Patient and tumor characteristics were comparable between groups (p ≥ 0.2). The median overall survival was 93 and 73 months in the laparoscopic nephroureterectomy group compared to the open nephroureterectomy group (p = 0.5), respectively. The median recurrence-free survival did not differ between open and laparoscopic nephroureterectomies (73 months for both groups; p = 0.9). Furthermore, the median overall and recurrence-free survival rates did not differ between patients treated with and without preoperative ureterorenoscopy. CONCLUSIONS: The results of this retrospective, single-center institution showed that overall and recurrence-free survival rates did not differ between patients with UTUC treated with laparoscopic and open RNU. Furthermore, preoperative ureterorenoscopy before RNU was not associated with higher overall or recurrence-free survival rates.

• Klíčová slova
• Laparoscopic radical nephroureterectomy, Open radical nephroureterectomy, Overall survival, Upper tract urothelial carcinoma,
• Publikační typ
• časopisecké články MeSH

INTRODUCTION: Identifying factors effecting the quality of nephrolithiasis surgical treatment could improve medical care for patients suffering from kidney stone disease. The objective of the article is to identify factors influencing reintervention rate after surgical treatment of kidney stone disease either by percutaneous nephrolitholapaxy or flexible ureterorenoscopy. METHOD: A retrospective study was conducted on 149 patients who underwent a surgery for a kidney stone disease at the Urological department of F.D. Roosevelt hospital Banská Bystrica from January 2015 till June 2015. The cohort included 60 women at average age of 57 (range 28-91) and 89 men at average age of 58 (range 30-92). Patients were treated by percutaneous litholapaxy (67 cases) and flexible ureterorenoscopy (82 cases, including 72 using dusting technique). Factors with potential influence on probability of repeated intervention during following 12 months have been studied and statistically analyzed. For the statistical analysis we used the generalized linear regression framework (GLM Generalized Linear Model) with the stepwise forward modeling approach. RESULTS: Using the significance level of 5% the statistically significant factors affecting the probability of the re-intervention for ipsilateral kidney stone disease are the stone size (p-value 0.0035) and the postoperative stone free status (p-value 0.0418). Other studied factors as demographical data (age, gender), surgical method (percutaneous nephrolitolapaxy or flexible ureterorenoscopy), stone count, postoperative draining system (nefrostomy or JJ stent) did not have any statistically significant impact. CONCLUSION: Patients could benefit from early diagnosis which could lead to earlier identification of smaller stones. Perfect operative technique with intraoperative achievement of stone free status is important to lower the need of repeated intervention.Key words: kidney stone disease - reintervention residual fragments.

• MeSH
• dospělí MeSH
• ledvinové kameny * chirurgie   MeSH
• lidé středního věku MeSH
• lidé MeSH
• litotripse * MeSH
• retrospektivní studie MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• ureteroskopie MeSH
• výsledek terapie MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH

BACKGROUND: Several groups have proposed features to identify low-risk patients who may benefit from endoscopic kidney-sparing surgery in upper tract urothelial carcinoma (UTUC). OBJECTIVE: To evaluate standard risk stratification features, develop an optimal model to identify ≥pT2/N+ stage at radical nephroureterectomy (RNU), and compare it with the existing unvalidated models. DESIGN, SETTING, AND PARTICIPANTS: This was a collaborative retrospective study that included 1214 patients who underwent ureterorenoscopy with biopsy followed by RNU for nonmetastatic UTUC between 2000 and 2017. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: We performed multiple imputation of chained equations for missing data and multivariable logistic regression analysis with a stepwise selection algorithm to create the optimal predictive model. The area under the curve and a decision curve analysis were used to compare the models. RESULTS AND LIMITATIONS: Overall, 659 (54.3%) and 555 (45.7%) patients had ≤pT1N0/Nx and ≥pT2/N+ disease, respectively. In the multivariable logistic regression analysis of our model, age (odds ratio [OR] 1.02, 95% confidence interval [CI] 1.0-1.03, p = 0.013), high-grade biopsy (OR 1.81, 95% CI 1.37-2.40, p < 0.001), biopsy cT1+ staging (OR 3.23, 95% CI 1.93-5.41, p < 0.001), preoperative hydronephrosis (OR 1.37 95% CI 1.04-1.80, p = 0.024), tumor size (OR 1.09, 95% CI 1.01-1.17, p = 0.029), invasion on imaging (OR 5.10, 95% CI 3.32-7.81, p < 0.001), and sessile architecture (OR 2.31, 95% CI 1.58-3.36, p < 0.001) were significantly associated with ≥pT2/pN+ disease. Compared with the existing models, our model had the highest performance accuracy (75% vs 66-71%) and an additional clinical net reduction (four per 100 patients). CONCLUSIONS: Our proposed risk-stratification model predicts the risk of harboring ≥pT2/N+ UTUC with reliable accuracy and a clinical net benefit outperforming the current risk-stratification models. PATIENT SUMMARY: We developed a risk stratification model to better identify patients for endoscopic kidney-sparing surgery in upper tract urothelial carcinoma.

• Klíčová slova
• Kidney-sparing surgery, Radical nephroureterectomy, Risk stratification, Upper tract urothelial carcinoma,
• MeSH
• hodnocení rizik MeSH
• karcinom z přechodných buněk * chirurgie   MeSH
• ledviny chirurgie   MeSH
• lidé MeSH
• nádory močového měchýře * MeSH
• nádory močovodu chirurgie   MeSH
• retrospektivní studie MeSH
• urologické nádory MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH

BACKGROUND AND OBJECTIVE: Stone size has traditionally been measured in one dimension. This is reflected in most of the literature and in the EAU guidelines. However, recent studies have shown that multidimensional measures provide better prediction of outcomes. METHODS: We performed a systematic review and meta-analysis of the prognostic accuracy of measures of stone size (PROSPERO reference CRD42022346967). We considered all studies reporting prognostic accuracy statistics on any intervention for kidney stones (extracorporeal shockwave lithotripsy [ESWL], ureterorenoscopy [URS], or percutaneous nephrolithotomy [PCNL]; Population) using multiplane measurements of stone burden (area in mm2 or volume in mm3; Intervention) in comparison to single-plane measurements of stone burden (size in mm; Intervention) for the study-defined stone-free rate (Outcome) in a PICO-framed question. We also assessed complication rates (overall and by Clavien-Dindo grade) and the operative time as secondary outcomes. Searches were made between 1970 and August 2023. We used the DeLong method to compare receiver operating characteristic (ROC) curves. KEY FINDINGS AND LIMITATIONS: Of 24 studies included in the review, 12 were eligible for comparative analysis with the DeLong test following meta-analysis of prognostic accuracy. For prediction of stone-free status, the area under the ROC curve (AUC) was significantly higher for stone volume than for stone size (0.71 vs 0.67; p < 0.001). Subanalyses confirmed this for ESWL and URS, but not for PCNL. For URS, the AUC was also significantly higher for stone area than for stone size (0.79 vs 0.77; p < 0.001). Throughout all analyses, there was no difference in AUC between stone area and stone volume. There was high risk of bias for all analyses apart from the URS subanalyses. CONCLUSIONS AND CLINICAL IMPLICATIONS: According to the limited data currently available, stone-free rates are predicted with significantly higher accuracy using multidimensional measures of stone burden in comparison to a single linear measurement. PATIENT SUMMARY: We reviewed different ways of measuring the size of stones in the kidney or urinary tract and compared their accuracy in predicting stone-free rates after treatment. We found that measurement of the stone area (2 dimensions) or stone volume (3 dimensions) is better than stone diameter (1 dimension) in predicting stone-free status after treatment.

• Klíčová slova
• Guidelines, Multidimensional measures, Predictor, Single linear measurement, Stone burden, Stone-free rate, Urolithiasis,
• Publikační typ
• časopisecké články MeSH
• přehledy MeSH

BACKGROUND: The European Association of Urology risk stratification dichotomizes patients with upper tract urothelial carcinoma (UTUC) into two risk categories. OBJECTIVE: To evaluate the predictive value of a new classification to better risk stratify patients eligible for kidney-sparing surgery (KSS). DESIGN, SETTING, AND PARTICIPANTS: This was a retrospective study including 1214 patients from 21 centers who underwent ureterorenoscopy (URS) with biopsy followed by radical nephroureterectomy (RNU) for nonmetastatic UTUC between 2000 and 2017. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: A multivariate logistic regression analysis identified predictors of muscle invasion (≥pT2) at RNU. The Youden index was used to identify cutoff points. RESULTS AND LIMITATIONS: A total of 811 patients (67%) were male and the median age was 71 yr (interquartile range 63-77). The presence of non-organ-confined disease on preoperative imaging (p < 0.0001), sessile tumor (p < 0.0001), hydronephrosis (p = 0.0003), high-grade cytology (p = 0.0043), or biopsy (p = 0.0174) and higher age at diagnosis (p = 0.029) were independently associated with ≥pT2 at RNU. Tumor size was significantly associated with ≥pT2 disease only in univariate analysis with a cutoff of 2 cm. Tumor size and all significant categorical variables defined the high-risk category. Tumor multifocality and a history of radical cystectomy help to dichotomize between low-risk and intermediate-risk categories. The odds ratio for muscle invasion were 5.5 (95% confidence interval [CI] 1.3-24.0; p = 0.023) for intermediate risk versus low risk, and 12.7 (95% CI 3.0-54.5; p = 0.0006) for high risk versus low risk. Limitations include the retrospective design and selection bias (all patients underwent RNU). CONCLUSIONS: Patients with low-risk UTUC represent ideal candidates for KSS, while some patients with intermediate-risk UTUC may also be considered. This classification needs further prospective validation and may help stratification in clinical trial design. PATIENT SUMMARY: We investigated factors predicting stage 2 or greater cancer of the upper urinary tract at the time of surgery for ureter and kidney removal and designed a new risk stratification. Patients with low or intermediate risk may be eligible for kidney-sparing surgery with close follow-up. Our classification scheme needs further validation based on cancer outcomes.

• Klíčová slova
• Risk assessment, Transitional cell carcinoma, Ureteroscopy, Urologic neoplasms, Urologic surgical procedures, Urological diagnostic techniques,
• MeSH
• karcinom z přechodných buněk * patologie   MeSH
• ledviny patologie   chirurgie   MeSH
• lidé MeSH
• nádory močového měchýře * patologie   MeSH
• nádory močovodu * patologie   chirurgie   MeSH
• retrospektivní studie MeSH
• senioři MeSH
• Check Tag
• lidé MeSH
• mužské pohlaví MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH