Conventional Transurethral Resection Of Bladder Tumor Research Articles

P243 VI-RADS followed by Primary Photodynamic Diagnosis (PDD) TURBT versus conventional White-Light TURBT and Re-TURBT in NMIBCs Candidate for second-look and resection: The CUT-less trial

P243 VI-RADS followed by Primary Photodynamic Diagnosis (PDD) TURBT versus conventional White-Light TURBT and Re-TURBT in NMIBCs Candidate for second-look and resection: The CUT-less trial

Prospective non-randomized comparison of transurethral laser en bloc resection vs. conventional resection of bladder tumors larger than 3 cm.

En bloc resection of bladder tumor (ERBT) is an established surgical treatment method for patients with non-muscle invasive bladder cancer (NMIBC) in tumors less than 3 cm. Data regarding the efficacy and safety of ERBT on larger than 3 cm tumors are sparse and its efficacy compared to conventional transurethral resection (TURBT) remains unclear. The aim of this study was to prospectively compare the feasibility, safety and oncological outcomes of laser (Tm-fiber) ERBT and TURBT in patients with primary bladder lesions ≥3 cm. A cohort of 45 patients who underwent surgery for primary NMIBC between February 2018 and March 2022 was collected prospectively. There was no randomization. All procedures were performed by two experienced surgeons. Inclusion criteria were as follows: age >18 years, primary Ta or T1 bladder tumor with a diameter of ≥3 cm, no more than 3 tumors and no history of upper tract urothelial carcinoma. Exclusion criteria were carcinoma in situ or invasion into muscle layer (≥T2). ERBT was performed with thulium fiber laser (IPG, Russia). Primary endpoints included efficacy with recurrence-free survival (RFS) at 3, 6 and 12 months. Secondary endpoints were safety parameters, perioperative data and specimen quality (the presence of muscle layer in specimens). Twenty-eight patients underwent laser ERBT and 17 conventional TURBT. The location and size of the tumors were comparable in both groups. The success rate was 93.3% in the ERBT group with two cases of conversion from ERBT to TURBT. Detrusor muscle was present in 92.8% patients in the ERBT group versus 70.5% in the TURBT group (P=0.04). Obturator nerve reflex was observed only in the TURBT group: 17.6% vs. 0.0% (P=0.02). The frequency of other complications was comparable between the two groups. RFS was not statistically different between the two methods at 3 (93.9% vs. 94.1%, P=0.87), 6 (89.3% vs. 82.3%, P=0.5) and 12 months (89.3% vs. 70.6%, P=0.11). Laser ERBT is a feasible and safe procedure to manage bladder tumors larger than 3 cm. While it seems safer than TURBT, its effect on efficacy remains to be assessed in larger trials.

Does the quality of endoscopic equipment influence the recurrence rate after photodynamic diagnosis-assisted transurethral resection of bladder tumor?

BackgroundPhotodynamic diagnosis-assisted transurethral resection of bladder tumor (PDD-TURBT) for nonmuscle-invasive bladder cancer is superior to conventional white-light TURBT for cancer detection. However, when performing PDD-TURBT, cystoscopy findings vary depending on the quality of the endoscopic equipment. In this study, we compared the effects of different types of endoscopic equipment on postoperative outcomes. MethodsPatients who underwent their first PDD-TURBT at our clinic were selected. Patients on whom PDD-TURBT was performed using endoscopic equipment A were sorted into Group A, and patients on whom PDD-TURBT was performed using equipment S were sorted into Group S. The characteristics, recurrence-free survival (RFS), and recurrence frequency of these patients were retrospectively investigated and compared. The prognostic factors for RFS were also analyzed. ResultsA total of 49 patients were included in Group A and 46 in Group S. In Group S, a higher detection rate (8.2% vs. 30.4 %, p < 0.01) of carcinoma in situ (CIS) was noted. RFS tended to be better in Group S (HR 0.63, p = 0.15). The frequency of recurrence also tended to be lower in Group S (4.92 vs. 3.66 per 10,000 person-days, p = 0.08). Furthermore, CIS (HR 0.30, p = 0.04) and Bacillus Calmette–Guerin therapy (HR: 0.26, p = 0.01) were significant favorable prognostic factors for RFS. ConclusionThe quality of the endoscopic equipment may influence postoperative recurrence after PDD-TURBT. Higher-quality endoscopic instruments have superior CIS detection capabilities, which can lead to improvements in postoperative outcomes with the appropriate selection of postoperative adjuvant therapy.

Incidence and predictors of intraoperative hypotension during transurethral bladder tumor resection with oral 5-aminolevulinic acid.

To analyze the incidence and risk factors of intraoperative hypotension related to photodynamic diagnosis-assisted transurethral resection of bladder tumor (PDD-TURBT) with oral 5-aminolevulinic acid (5-ALA). We retrospectively analyzed 487 patients with bladder tumors who underwent PDD-TURBT (n = 184) or conventional TURBT (conv-TURBT) (n = 303) between 2018 and 2021. Intraoperative hypotension was defined as hypotension requiring vasopressors during TURBT, and its incidence was compared between the two groups. Potential risk factors of intraoperative hypotension, including preoperative change in mean arterial pressure (MAP), were further investigated in patients receiving PDD-TURBT. The median age was 72 years, 392 patients (81%) were male, and 203 (42%) had hypertension. TURBT was performed under general and spinal anesthesia in 76 (16%) and 411 (84%) patients, respectively. The incidence of intraoperative hypotension was significantly higher in PDD-TURBT compared to conv-TURBT (43% vs. 17%, respectively). The median change in MAP until the induction of anesthesia was +6.5 mmHg (range: -29.0 to +46.3) in the PDD-TURBT group and +14.7 mmHg (range: -35.3 to +67.7) in the conv-TURBT group, showing a significantly smaller increase in the PDD-TURBT group (p < 0.001). In the multivariable analysis for PDD-TURBT patients, advanced age, general anesthesia, and lower MAP change (<+6.5 mmHg) until anesthesia induction were significantly associated with intraoperative hypotension (p = 0.0104, <0.001, and <0.001, respectively). Intraoperative hypotension occurred more frequently in patients who underwent PDD-TURBT than in those who underwent conv-TURBT. Using oral 5-ALA decreases preoperative blood pressure elevation and may be responsible for intraoperative hypotension.

Safety, feasibility, and quality of thulium laser en-bloc resection for treatment of non-muscle invasive bladder cancer

BackgroundTrans-Urethral Resection of Bladder Tumors (TURBT) is a critical step in diagnosis, staging and treatment of bladder tumors. Conventional TURBT (cTURBT) involves the electro-resection of the tumor into small fragments. This technique leads to concerns about the completeness of resection, under-staging, bleeding, cancer cell implantation, and most importantly, risk of tumour recurrence. To circumvent this, laser en-bloc resection of bladder tumors has been introduced.ObjectivesAssessment of the safety, feasibility, and quality of Thulium Laser En-bloc Resection of Tumors (TmL-ERBT) for treatment of Non-Muscle Invasive Bladder Cancer (NMIBC) in various urinary bladder walls as a primary endpoint. The secondary endpoints were to investigate the feasibility of thulium laser use in the re-staging cystoscopy and to evaluate the learning curve of TmL-ERBT.MethodsThis is a prospective observational study including all newly diagnosed patients, above 18 years old, with a urinary bladder mass ≤ 4 cm in maximal dimension (measured via bladder ultrasound or CT or MRI). All patients underwent TmL-ERBT under regional anaesthesia in a lithotomy position. All intraoperative complications such as obturator nerve reflex, bladder perforation, and significant bleeding were recorded. Postoperative variables such as the mean catheterization time, bladder irrigation fluid volume and duration, and the mean of hospital stay as well as the postoperative complications were recorded. All patients were risk stratified and managed according to EUA guidelines then followed by a surveillance regimen per 3 months for 6 months.ResultsThe study included 23 patients with a mean age of 53 ± 15.8 years. While 15 patients (65%) had a single tumor, the rest had multiple tumors, ranging from 2 to 3 in number with a total of 36 lesions. No cases required conversion to cTURBT and none of them experienced obturator nerve reflex or bladder perforation. Only one patient (4.3%) had an attack of clot urine retention. The mean hospitalization time was 31.2 ± 14.4 h and the mean catheterization time was 20.4 ± 13.3 h. The Detrusor muscle was present in 20 patients (87%) and the remaining 3 patients required a re-staging cystoscopy which was performed efficiently using thulium laser. None of the treated patients developed tumour recurrence during the follow-up period. In analysis, the duration of complete resection of 2–4 cm tumours was 23–27 min after the 7th case with a resection rate of 0.12–0.15 cm/min.ConclusionTmL-ERBT is safe and feasible for complete resection of NMIBC with a short learning curve and adequate cancer control.

Role of En Bloc Resection in Staging of Non-Muscle Invasive Bladder Urothelial Carcinoma

Background Among cancers affecting both sexes, bladder cancer ranks as the fourth most prevalent cancer globally, and in the top 5 in prevalence in individual countries of all income levels and all regions enbloc resection approach of bladder tumors has a great effect in staging bladder tumors that help in early management of bladder tumors. Objective to review systematically studies whether en bloc resection of non-muscle invasive bladder cancer (NMIBC) could improve the identification of muscularis mucosa (MM) and muscle properia. Patients and Methods We searched PubMed, Google scholar search engine, Cochrane database of systematic reviews, EMBASE and science Direct, using the following Keywords “bladder tumors, enbloc resection, transurethral resection,”. The mentioned databases were searched for studies published during the last five years Results Total number of patients in included studies was 1940 of which 955 (49.2%) underwent en bloc resection and 985(50.8%) underwent conventional TURBT. after analyzing available data, en bloc resection has superiority in less recurrence rate and less hospital stay and higher in staging rate. Data Sources Medline databases (PubMed, Medscape, ScienceDirect. EMF-Portal) and all materials available in the Internet till 2022. Data Extraction If the studies did not fulfill the inclusion criteria, they were excluded. Study quality assessment included whether ethical approval was gained, eligibility criteria specified, appropriate controls, and adequate information and defined assessment measures. Conclusion In our review, ERBT show that it is an effective approach with some advantages over cTURBT regarding the treatment of NMIBC. This review revealed that hospitalization time and staging rate are superior in patients treated with ERBT than cTURBT, and complication rate and 24-month recurrence rate were also lower using ERBT. Accumulating evidence indicates that ERBT improves the quality of the surgical specimens and decreases the ReTUR frequency. Based on the previous evidence we recommend that, ERBT should be adapted by more surgeons in the treatment of non muscle invasive bladder tumors.

Intravesical BCG therapy with photodynamic diagnosis-guided transurethral resection of bladder tumors improves recurrence-free survival

BackgroundIntravesical Bacille Calmette–Guerin (BCG) therapy has been reported to be effective in preventing recurrence and progression in non-muscle invasive bladder cancer. Furthermore, photodynamic diagnosis (PDD)-assisted transurethral resection of bladder tumor (TURBT) improves the accuracy of cancer diagnosis and contributes to lower recurrence rates. The purpose of this study is to investigate whether more tumor resection with PDD-TURBT rather than conventional TURBT before BCG therapy outweighs the benefit of BCG therapy alone. MethodsPatients who underwent intravesical BCG therapy following TURBT in our institution from 2010 to 2021 were included. They were divided into the following two groups: those who received PDD-TURBT before BCG treatment (PDD + BCG group) and those who received conventional TURBT before BCG treatment (WL + BCG group). The 2-year recurrence-free survival (RFS) and progression-free survival (PFS) of the two groups were retrospectively analyzed and compared. ResultsThe 2-year RFS was significantly improved in the PDD + BCG group (hazard ratio [HR]: 2.41, 95% confidence interval [CI]: 1.26–4.60; p = 0.025). No significant difference in 2-year PFS was noted between the two groups. Analysis of prognostic factors for RFS showed that PDD-TURBT w We think that this text does not adequately express the meaning that we want to deliver to the reader.as a significant prognostic factor in univariate analysis (HR: 0.41, 95% CI: 0.18–0.92; p = 0.03). ConclusionBCG treatment following PDD-TURBT significantly improved RFS more than BCG therapy following WL-TURBT. More accurate tumor localization and more efficient tumor resection by PDD-TURBT may have a positive impact on subsequent BCG treatments even if the treatment is administered postoperatively.

Comparison of Pathological Outcome and Recurrence Rate between En Bloc Transurethral Resection of Bladder Tumor and Conventional Transurethral Resection: A Meta-Analysis.

Current treatment for non-muscle invasive bladder cancer (NMIBC) is the conventional transurethral resection of bladder tumor (CTURBT), but the en bloc transurethral resection of bladder tumor (ERBT) has been gaining more attraction in recent years considering better specimen integrity. Thus, we conducted this meta-analysis to compare the safety and efficacy of ERBT versus CTURBT. Trials were collected from an online database. The primary outcomes included identification of detrusor muscle in specimen, residual tumor, 3, 12, and 24-month recurrence rates and same-site recurrence rate. A total of 31 trials were included. The ERBT group had a higher rate of identification of detrusor muscle in specimens (p = 0.003) and lower residual tumor (p < 0.001). Other than that, lower rates of 3-month (p = 0.005) and 24-month recurrence rate (p < 0.001), same-site recurrence rate (p < 0.001) and complications were also observed. For perioperative outcomes, shorter hospitalization time (HT) (p < 0.001), and catheterization time (CT) (p < 0.001) were also revealed in the ERBT group. No significant difference was found in operative time (OT) (p = 0.93). The use of ERBT showed better pathological outcomes and fewer complications, so it could be considered a more effective treatment option for NMIBC.

En bloc resection versus conventional TURBT for T1HG bladder cancer: A propensity score-matched analysis

En bloc resection versus conventional TURBT for T1HG bladder cancer: A propensity score-matched analysis

Precise diagnosis and treatment of non-muscle invasive bladder cancer -A clinical perspective.

According to the guidelines, transurethral resection of bladder tumor (TURBT) followed by intravesical therapy remains the standard strategy for the management of non-muscle invasive bladder cancer (NMIBC). However, even if patients receive standard strategy, the risk of postoperative recurrence and progression is high. From the clinical perspective, the standard strategy needs to be optimized and improved. Compared to conventional TURBT, the technique of en bloc resection of bladder tumor (ERBT) removes the tumor tissue in one piece, thus following the principles of cancer surgery. Meanwhile, the integrity and spatial orientation of tumor tissue is protected during the operation, which is helpful for pathologists to make accurate histopathological analysis. Then, urologists can make a postoperative individualized treatment plan based on the patient's clinical characteristics and histopathological results. To date, there is no strong evidence that NMIBC patients treated with ERBT achieve better oncological prognosis, which indicates that ERBT alone does not yet improve patient outcomes. With the development of enhanced imaging technology and proteogenomics technology, en bloc resection combined with these technologies will make it possible to achieve precise diagnosis and treatment of bladder cancer. In this review, the authors analyze the current existing shortcomings of en bloc resection and points out its future direction, in order to promote continuous optimization of the management strategy of bladder cancer.

Proposal for a New Vesical Imaging-Reporting and Data System (VI-RADS)-Based Algorithm for the Management of Bladder Cancer: A Paradigm Shift From the Current Transurethral Resection of Bladder Tumor (TURBT)-Dependent Practice.

Transurethral resection of bladder tumor (TURBT) is the essential first step in the current algorithm for the management of bladder cancer (BC). However, despite its necessity and significance, TURBT has several limitations, including cost, hospitalization, anesthesia, potential complications such as bladder perforation, and delay to radical cystectomy. The Vesical Imaging Reporting and Data System (VI-RADS) was developed to standardize the reporting of multiparametric magnetic resonance imaging for BC, and its diagnostic accuracy to predict muscle invasion has been validated. Given the high sensitivity of VI-RADS ≥ 3 and high specificity of VI-RADS ≥ 4 as clinically relevant cutoff values, we herein propose a new VI-RADS-based algorithm for the management of BC. Using this algorithm, patients with VI-RADS ≤ 2 may not need to undergo sampling of the detrusor muscle nor second TURBT even if there is no muscle in the initial TURBT specimen, whereas patients with VI-RADS ≥ 4 may skip conventional TURBT aimed at pathologic confirmation of muscle invasion and immediately undergo radical cystectomy. Our newly proposed algorithm enables the avoidance of unnecessary deep resection or second TURBT as well as delay to radical cystectomy. The VI-RADS-based algorithm enables a paradigm shift from the current TURBT-dependent practice in the management of BC.

En bloc resection of bladder tumors: challenges and unmet needs in 2022

Non-muscle invasive bladder cancer accounts for the majority of new bladder cancer diagnoses, and endoscopic transurethral resection of bladder tumor (TURBT) represents the standard-of-care. Although a relatively safe and common procedure, TURBT is often hampered by the questionable quality of resection. The evolution of surgical techniques has brought en bloc resection of bladder tumor (ERBT) to the forefront. ERBT has emerged as an alternative to conventional TURBT, incorporating a more delicate en bloc sculpting and tumor excision, in contrast to 'piecemeal'resection by conventional TURBT. ERBT appears safe, feasible and effective with demonstrably higher rates of detrusor muscle in the pathologic specimen, all while providing better staging and obviating the need for a re-TURBT in selected patients. However, the method's adoption in the field is still limited. This review summarizes the recent evidence relevant to ERBT while further highlighting the technique's limitations and unmet needs.

Safety and efficacy of en bloc vs. conventional transurethral resection of bladder tumors: ameta-analysis and systematic review

En bloc tumor resection of bladder tumors (ERBT) is anovel alternative procedure to conventional resection of bladder tumor (cTURBT), which might help to address common problems of the standard method, such as inadequate detrusor muscle in specimens, high re-resection rates and high recurrence rates. To analyze current data on ERBT in efficacy and safety compared to cTURBT. PubMed. Two independent authors identified trials based on keywords and inclusion criteria. Athird author was consulted in case of discrepancies. Screening keywords: ERBT, en bloc transurethral resection of bladder tumor, TURBT en bloc. Ameta-analysis of 13studies was performed. The effect size was estimated based on odds ratios and mean differences including their corresponding two-sided 95% confidence intervals. The analyzed studies comprised ahomogenous collective in terms of tumor size, tumor multiplicity and tumor stage. Operation time did not significantly differ between the methods. Differences were observed in hospitalization and catheterization time in favor of ERBT. Reported complications did not show clear differences. There was significantly more detrusor muscle in the specimens in the ERBT group. No significant differences were found in recurrence up to 2years of follow-up. ERBT is asafe alternative to conventional TURBT with promising features regarding effective resection of detrusor muscle. More standardized data on recurrence rates, different resection modalities and resection margin results are needed.

Reduction of residual tumors by photodynamic diagnosis-assisted TURBT using 5-aminolevulinic acid for high-risk nonmuscle-invasive bladder cancer (BRIGHT study).

489 Background: High-risk non-muscle invasive bladder cancer (NMIBC) has high tumor residual rate of 40–60% after TURBT, and second TUR is strongly recommended. Photodynamic diagnosis-assisted TURBT (PDD-TURBT) using 5-aminolevulinic acid (5-ALA) has been reported to reduce residual tumors and intravesical recurrence. The purpose of this study is to investigate the residual tumor-reducing effect of PDD-TURBT for high-risk NMIBC and to explore the possibility that second TUR could be omitted by PDD-TURBT. Methods: We conducted an investigator-initiated multicenter prospective observational study (BRIGHT study; UMIN000035712) involving patients who underwent PDD-TURBT using 5-ALA and second TUR for high-risk NMIBC (high-grade UC or pT1 or concurrent CIS). The primary endpoint was tumor residual rate and the secondary endpoint was recurrence-free survival, which were compared with historical data (conventional TURBT) using propensity score-matching (PSM; caliper: 0.2). Assuming that the difference between the two groups was 20%, the planned number of cases was statistically set to 200 PDD-TURBT cases and 300 historical data cases, and the registration period was 2 years from January 2019 to December 2020, and the follow-up period was 2 years after second TUR. Results: In this study, 188 patients in the PDD-TURBT group and 313 patients in the historical group were enrolled, and 177 patients and 306 patients were included in the final analysis, respectively. After PSM adjustment, 167 patients in both groups were compared, and no significant differences were observed in age, gender, history of bladder cancer, tumor diameter, number of tumors, history of upper tract urothelial cancer, and period from initial TURBT to second TUR. The tumor residual rate was 25.8% in the PDD-TURBT group compared with 47.3% in the historical group, showing a significant decrease (odds ratio 0.39 [95% CI: 0.24–0.63]; p = 0.000064). Logistic regression analysis revealed that significant factors predicting residual tumors in PDD-TURBT were current or past smoking history, multiple tumors, and non-pTa (pT1 or pTis) tumors. Focusing on these three factors, patients with 0–1 of these three factors have a significant less tumor residual rate compared with patients with 2–3 factors (8.33% vs. 33.3%; odds ratio 5.46 [95% CI: 1.81–22.3]; p = 0.00052). Conclusions: PDD-TURBT for high-risk NMIBC significantly reduced the tumor residual rate at the second TUR compared to the conventional TURBT. PDD-TURBT using 5-ALA may enable to omit second TUR in some high-risk NMIBC cases. Clinical trial information: UMIN000035712.

Effectiveness and Safety of a Modified Technique of Transvesical Obturator Nerve Block to Avoid Adductor Contractions during Transurethral Resection of Bladder Tumors

Introduction: The aim of the study was to evaluate the effectiveness of a modified transvesical obturator nerve block (ONB) in the prevention of obturator nerve reflex and consecutive bladder perforations (BPs) during transurethral resection of bladder tumors (TURBTs). Materials and Methods: A retrospective analysis of all patients resected in 2014–2015 due to a bladder tumor of the lateral walls, including a follow-up period until December 2018, was performed. Two groups were defined: in the first group, all patients underwent TURBT with a modified transvesical ONB. The second group underwent conventional TURBT with intermittent resection. Primary endpoints were the rates of adductor contractions and BPs. Results: Ninety-four out of 1,145 resected patients presented with tumors on the lateral wall of the bladder and a complete dataset including a long-term follow-up. Thirty-six patients were treated in the ONB group, and 58 patients comprised the control group. The median age in the 2 groups was 70.8 and 71.8 years in the first and second groups, respectively. Adductor spasms were reported in 8.33 versus 25.86% (p = 0.057) and perforation in 2.78 versus 17.24% (p = 0.047) in groups 1 and 2, respectively. After a median follow-up of 32.5 months, there was no significant difference in recurrence rates (52.78 vs. 51.72%, p = 0.672). In a subgroup analysis, lower perforation rates were recorded for the ONB group in patients with tumors <3 cm (0/30 vs. 8/46, p = 0.076) and in patients with unifocal tumors (0/12 vs. 5/23, p = 0.141). Discussion/Conclusion: The simplified approach of transvesical ONB demonstrated in this study appears to be an inexpensive, safe, effective, and simple-to-use technique.

En bloc transurethral resection of bladder tumors: A review of current techniques

Growing interest surrounds the concept of en bloc transurethral resection of bladder tumors (ERBT). Theoretical advantages include improved adherence to oncological principles and potential yield of superior pathological specimens. Multiple ERBT methods exist. This review summarizes the current evidence regarding application of differing techniques and technologies to ERBT. A systematic review of MEDLINE/EMBASE/Scopus databases was performed, using terms "en bloc," "ERBT," "bladder," and "urinary bladder neoplasm." Template-based data extraction included technique of ERBT, feasibility, tumor size, activation of obturator nerve reflex, operative complications, detrusor muscle sampling rate, and recurrence data. Multiple approaches to ERBT have evolved, using a variety of energy sources. The feasibility of electrocautery, laser, combined waterjet/electrocautery, and polypectomy snare techniques have been confirmed in achieving ERBT. ERBT appears safe, with a low complication rate. The use of laser energy sources reduces the risk of activating the obturator nerve reflex during lateral wall resections. Otherwise, no energy source is unequivocally superior in achieving ERBT. The rate of detrusor muscle sampling is high with use of ERBT and appears superior to that achieved with conventional TURBT (cTURBT) in multiple comparative studies. A limited number of largely non-randomized trials assess bladder tumor recurrence; current evidence suggests this is similar between ERBT and cTURBT groups. ERBT using a variety of technologies is feasible and safe, with a high detrusor muscle sampling rate. Further research is required to determine whether rates of residual disease or recurrence can be reduced with ERBT vs. cTURBT.

Variations in photodynamic diagnosis for bladder cancer due to the quality of endoscopic equipment

Background: Photodynamic diagnosis (PDD)-assisted transurethral resection of bladder tumor (TURBT) has different treatment outcomes across institutions, as seen in conventional TURBT. We retrospectively compared the difference in quality between the two types of endoscopic equipment used for PDD-assisted TURBT in our institution.Methods: This study enrolled 205 consecutive patients who underwent PDD-assisted TURBT. Patients were divided into two groups according to the endoscopic equipment used for PDD-assisted TURBT: Group A using the conventionally used endoscopic system and Aladuck LS-DLED and Group S using the Storz PDD system. Cystoscopy findings of white light (WL), fluorescence light (FL), and combination (positive if either WL or FL was positive) were recorded, and diagnostic quality of PDD was compared between both groups.Results: Group A had 105 cases and 336 specimens, while Group S had 100 cases and 361 specimens, with no significant differences between patient characteristics. The tumor sensitivities of WL, FL, and combination in Group A was 71.9%, 77.1%, 90.5%, respectively, while in Group S, these were 71.5%, 92.2%, 96.1%, respectively. Group S had significantly higher sensitivity of FL and combination than Group A, as well as higher detection of carcinoma in situ lesions.Conclusion: Both endoscopic systems had improved sensitivity with PDD-assistance versus WL only, with Group S having higher sensitivity. Differences in the quality of endoscopic equipment may influence the differences in treatment results with PDD-assisted TURBT across institutions.

Transurethral Resection of Bladder Tumor: Electrosurgical and Laser.

Transurethral resection of bladder tumor (TURBT) is still the gold standard for the diagnosis, treatment, and staging of nonmuscle invasive bladder cancer. En bloc resection of bladder tumor (EBRT) has been recently introduced to overcome the limitations of conventional TURBT. EBRT potential advantages are (1) complete resection, (2) a more precise and controlled resection (potentially fewer complications), (3) better sample orientation for histopathology analysis, (4) presence of detrusor in the specimen, and (5) less tumor seeding on normal urothelium by tumor fragments. This article aimed to present a step-by-step technique of conventional TURBT and EBRT with thulium laser support. We also aimed to provide tips and tricks for a correct surgical procedure and postoperative patient care. Finally, clinical outcomes of TURBT versus EBRT were reviewed.

MP16-04 LASER VERSUS ELECTRICAL E-BLOC RESECTION OF BLADDER TUMORS FOR TREATMENT OF NON-MUSCLE INVASIVE BLADDER CANCER; CRITICAL APPRAISAL THROUGH A RANDOMIZED TRIAL

You have accessJournal of UrologyBladder Cancer: Non-invasive II (MP16)1 Sep 2021MP16-04 LASER VERSUS ELECTRICAL E-BLOC RESECTION OF BLADDER TUMORS FOR TREATMENT OF NON-MUSCLE INVASIVE BLADDER CANCER; CRITICAL APPRAISAL THROUGH A RANDOMIZED TRIAL Ahmed Elshal, Mohamed Bahy, Mahmoud Laymon, Abdelwahab Hashem, Ahmed Mosbah, and Adel Nabeeh Ahmed ElshalAhmed Elshal More articles by this author , Mohamed BahyMohamed Bahy More articles by this author , Mahmoud LaymonMahmoud Laymon More articles by this author , Abdelwahab HashemAbdelwahab Hashem More articles by this author , Ahmed MosbahAhmed Mosbah More articles by this author , and Adel NabeehAdel Nabeeh More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000002001.04AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: Laser En-bloc resection of bladder tumors (ERBT) has been reported as a safer procedure with less residual tumor and better specimen quality when compared to conventional resection. In this trial, we tested the non-inferiority of electrical versus laser ERBT invasive bladder cancer (NMIBC) METHODS: Between June 2019 and December 2020, 106 patients with cystoscpic visual criteria of NMIBC were randomly allocated to laser and electrical enbloc resection. The primary endpoint was to assess the need of conversion to conventional TURBT. Operative parameters, quality of specimen, perioperative complications and completeness of resection as indicated by residual tumors in restaging TUR (2-6 weeks after ERBT) Trial ID NCT04029948 RESULTS: Patients` and tumor`s baseline characteristics were comparable in both groups. More resection time was reported during laser ERBT, p= 0.04. Technical failure with conversion to conventional resection was in 2 cases during electrical ERBT and none during Laser ERBT, P=0.146 Detrusor muscle was sampled in 59.3% and 53.8% (p=0.574) in Laser ERBT and electrical ERBT, respectively. Lamina propria invasion was 85.1%% and 84% in Laser ERBT and electrical ERBT, respectively (p=0.111). Intraoperative complications were reported in 17.3% after electrical ERBT in the form of obturator kick, bladder perforation and with no complications reported in the laser group (p=0.002). Table 1 There was no statistical difference between laser and electrosurgical ERBT regarding urethral catheter duration and hospital stay with p value 0.2 & 0.9 in the 2 groups respectively. Residual tumors at second look were detected in 6.5% and 2.6% Laser ERBT and electrical ERBT, respectively (p=0.391). CONCLUSIONS: Laser ERBT seems to be safer procedure for bladder tumor resection with longer resection time when compared to electrical ERBT. Source of Funding: no © 2021 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 206Issue Supplement 3September 2021Page: e297-e297 Advertisement Copyright & Permissions© 2021 by American Urological Association Education and Research, Inc.MetricsAuthor Information Ahmed Elshal More articles by this author Mohamed Bahy More articles by this author Mahmoud Laymon More articles by this author Abdelwahab Hashem More articles by this author Ahmed Mosbah More articles by this author Adel Nabeeh More articles by this author Expand All Advertisement Loading ...

EN BLOC RESECTION OF BLADDER TUMOR(EBRT) USING MONOPOLAR CAUTERY; A TERTIARY HOSPITAL EXPERIENCE.

Bladder cancer is a growing health problem with the second most common urological malignancy. It accounts for around 7% of a new cancer diagnosis. Tobacco smoking is the most important risk factor accounting for around 50% of cases. Tobacco smokes contain aromatic amines and polycyclic hydrocarbons which are excreted through kidneys. The goal of transurethral biopsy in NMIBC(non-muscle invasive bladder cancer) is to make the correct diagnosis and completely remove all visible lesions which can be either resected piecemeal or en bloc. The presence of detrusor muscle in the specimen is an important factor for planning treatment and prognosis. Here we share our experience of EBRT using monopolar cautery describing the feasibility, safety, and adequacy of the procedure in the management of small urinary bladder tumors. The study was conducted in the Department of Urology, SMS Medical College, and attached hospitals. All the patients with clinical NMIBC during study duration were admitted and a total of 25 patients above the age of 18yrs, having papillary bladder tumors less than 3 cm were included in the study. Complete resection by the en bloc technique was achieved in all 25 cases with no requirement of conversion to conventional TURBT. Our study also shows the presence of detrusor muscle in 22 specimens out of 25. And only two patients developed severe bleeding which needed a blood transfusion. Thus, ERBT using monopolar cautery is safe and feasible for the complete resection of NMIBCs with a high rate of detrusor-positive specimens in the selected patient population.