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Teoh JYC, D'Andrea D, Gallioli A, Yanagisawa T, MacLennan S, Nicoletti R, Fai NC, Maffei D, Hurle R, Lusuardi L, Malavaud B, Miki J, Kramer M, Mostafid H, Enikeev D, Babjuk M, Breda A, Shariat S, Gontero P, Herrmann T. En bloc resection of bladder tumour: the rebirth of past through reminiscence. World J Urol 2023; 41:2599-2606. [PMID: 37584691 PMCID: PMC10581917 DOI: 10.1007/s00345-023-04547-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 07/20/2023] [Indexed: 08/17/2023] Open
Abstract
PURPOSE To learn about the history and development of en bloc resection of bladder tumour (ERBT), and to discuss its future directions in managing bladder cancer. METHODS In this narrative review, we summarised the history and early development of ERBT, previous attempts in overcoming the tumour size limitation, consolidative effort in standardising the ERBT procedure, emerging evidence in ERBT, evolving concepts in treating large bladder tumours, and the future directions of ERBT. RESULTS Since the first report on ERBT in 1980, there has been tremendous advancement in terms of its technique, energy modalities and tumour retrieval methods. In 2020, the international consensus statement on ERBT has been developed and it serves as a standard reference for urologists to practise ERBT. Recently, high-quality evidence on ERBT has been emerging. Of note, the EB-StaR study showed that ERBT led to a reduction in 1-year recurrence rate from 38.1 to 28.5%. An individual patient data meta-analysis is currently underway, and it will be instrumental in defining the true value of ERBT in treating non-muscle-invasive bladder cancer. For large bladder tumours, modified approaches of ERBT should be accepted, as the quality of resection is more important than a mere removal of tumour in one piece. The global ERBT registry has been launched to study the value of ERBT in a real-world setting. CONCLUSION ERBT is a promising surgical technique in treating bladder cancer and it has gained increasing interest globally. It is about time for us to embrace this technique in our clinical practice.
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Affiliation(s)
- Jeremy Yuen-Chun Teoh
- Department of Surgery, S.H. Ho Urology Centre, The Chinese University of Hong Kong, Hong Kong SAR, China.
- Urothelial Cancer Working Group, European Association of Urology-Young Academic Urologists (EAU-YAU, Amsterdam, Netherlands.
| | - David D'Andrea
- Urothelial Cancer Working Group, European Association of Urology-Young Academic Urologists (EAU-YAU, Amsterdam, Netherlands
- Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Andrea Gallioli
- Urothelial Cancer Working Group, European Association of Urology-Young Academic Urologists (EAU-YAU, Amsterdam, Netherlands
- Department of Urology, Fundació Puigvert, Autonoma University of Barcelona, Barcelona, Spain
| | - Takafumi Yanagisawa
- Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
- Department of Urology, The Jikei University School of Medicine, Tokyo, Japan
| | | | - Rossella Nicoletti
- Department of Surgery, S.H. Ho Urology Centre, The Chinese University of Hong Kong, Hong Kong SAR, China
- Unit of Urological Robotic Surgery and Renal Transplantation, Careggi Hospital, University of Florence, Florence, Italy
| | - Ng Chi Fai
- Department of Surgery, S.H. Ho Urology Centre, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Davide Maffei
- Department of Urology, University College London Hospital NHS Foundation Trust, London, UK
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
| | - Rodolfo Hurle
- Department of Urology, IRCCS Humanitas Research Hospital, Rozzano, Italy
| | - Lukas Lusuardi
- Department of Urology and Andrology, Salzburg University Hospital, Paracelsus Medical University, 5020, Salzburg, Austria
| | - Bernard Malavaud
- Institut Universitaire du Cancer Toulouse-Oncopôle, Toulouse, France
| | - Jun Miki
- Department of Urology, The Jikei University School of Medicine, Tokyo, Japan
| | - Mario Kramer
- Department of Urology, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Hugh Mostafid
- Department of Urology, The Stokes Centre for Urology, Royal Surrey Hospital, Guildford, UK
| | - Dmitry Enikeev
- Institute for Urology and Reproductive Health, Sechenov University, Moscow, Russia
| | - Marek Babjuk
- Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
- Department of Urology, 2nd Faculty of Medicine, Hospital Motol, Charles University, Prague, Czech Republic
| | - Alberto Breda
- Department of Urology, Fundació Puigvert, Autonoma University of Barcelona, Barcelona, Spain
| | - Shahrokh Shariat
- Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
- Institute for Urology and Reproductive Health, Sechenov University, Moscow, Russia
- Department of Urology, 2nd Faculty of Medicine, Hospital Motol, Charles University, Prague, Czech Republic
- Department of Urology, Weill Cornell Medical College, New York, NY, USA
- Department of Urology, University of Texas Southwestern, Dallas, TX, USA
- Hourani Center for Applied Scientific Research, Al-Ahliyya Amman University, Amman, Jordan
| | - Paolo Gontero
- Department of Urology, Città Della Salute e Della Scienza, University of Torino School of Medicine, Turin, Italy
| | - Thomas Herrmann
- Department of Urology, Kantonsspital Frauenfeld, Frauenfeld, Switzerland
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Guven S, Colecchia M, Oltulu P, Bonfante G, Enikeev D, Esen H, Herrmann T, Lusuardi L, Micali S, Somani B, Skolarikos A, Breda A, Liatsikos E, Redorta JP, Gozen AS. How do endoscopic bladder tumor resection techniques affect pathology practice? EAU Section of Uro-Technology (ESUT) and Uropathology (ESUP) survey. World J Urol 2023; 41:2617-2625. [PMID: 35567624 DOI: 10.1007/s00345-022-04022-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 04/19/2022] [Indexed: 10/18/2022] Open
Abstract
PURPOSE We aimed to examine how different endoscopic bladder tumor resection techniques affect pathologists' clinical practice patterns. METHODS An online survey including 28 questions clustered in four main sections was prepared by the ESUT ERBT Working Group and released to the pathologists working in the institutions of experts of the ESUT Board and the working groups and experts in the uropathology working group. A descriptive analysis was performed using the collected data. RESULTS Sixty-eight pathologists from 23 countries responded to the survey. 37.3% of the participants stated that they always report the T1 sub-staging. Of those who gave sub-staging, 61.3% used T1a, b. 85.2% think that en bloc samples provide spatial orientation faster than piecemeal samples, and 60% think en bloc samples are timesaving during an inspection. 55.7% stated that whether the tissue sample is en bloc or piecemeal is essential. 57.4% think en bloc sample reduces turnaround time and is cost-effective for 44.1%. A large number of pathologists find that the pathology examination of piecemeal samples has a longer learning curve. CONCLUSION The survey shows that pathologists think that they can diagnose faster, accurately, and cost-effectively with ERBT samples, but they do not often encounter them in practice. Moreover, en bloc samples may be a better choice in pathology resident training. Evidence from real-life observational pathology practice and clinical research can reveal the current situation more clearly and increase awareness on proper treatment in endoscopic management of bladder tumors.
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Affiliation(s)
- Selcuk Guven
- Urology Department, Meram School of Medicine, Necmettin Erbakan University, Konya, Turkey
| | | | - Pembe Oltulu
- Pathology Department, Meram School of Medicine, Necmettin Erbakan University, Konya, Turkey
| | - Giulia Bonfante
- Urology Department, University of Modena and Reggio Emilia, Modena, Italy
| | - Dmitry Enikeev
- Institute for Urology and Reproductive Health, Sechenov University, Moscow, Russia
| | - Hasan Esen
- Pathology Department, Meram School of Medicine, Necmettin Erbakan University, Konya, Turkey
| | - Thomas Herrmann
- Department of Urology, Spital Thurgau AG, Frauenfeld, Switzerland
| | - Lukas Lusuardi
- Department of Urology, General Hospital Bolzano, Bolzano, Italy
| | - Salvatore Micali
- Urology Department, University of Modena and Reggio Emilia, Modena, Italy
| | - Bashkar Somani
- Department of Urology, University Hospital Southampton NHS Trust, Southampton, UK
| | - Andreas Skolarikos
- Department of Urology, National and Kapodistrian University of Athens, Athens, Greece
| | - Alberto Breda
- Department of Urology, Fundacion Puigvert, UniversitatAutonoma de Barcelona, Barcelona, Spain
| | | | - Joan Palou Redorta
- Department of Urology, Fundacion Puigvert, UniversitatAutonoma de Barcelona, Barcelona, Spain
| | - Ali Serdar Gozen
- SLK Kliniken Urology Department, Teaching Hospital of Heidelberg University, Heilbronn, Germany.
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Zeng SP, Sun YF, Ye JB, Zeng K, Li XB. Transurethral en bloc resection of a bladder perivascular epithelioid cell tumor (PEComa): a case report. BMC Urol 2023; 23:28. [PMID: 36864398 PMCID: PMC9983238 DOI: 10.1186/s12894-023-01198-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Accepted: 02/23/2023] [Indexed: 03/04/2023] Open
Abstract
BACKGROUND Perivascular epithelioid cell tumor (PEComa) is a mesenchymal tumor with distinct histologic and immunologic features. PEComas that originate in the bladder are extremely rare clinically, with only 35 cases reported in the English literature thus far. Here, we report a case of bladder PEComa resection by transurethral en bloc resection of bladder tumor (ERBT). CASE PRESENTATION A 66-year-old female with a history of poorly controlled type 2 diabetes with associated complications of frequent urinary tract infections presented to our hospital for a routine physical examination. Outpatient ultrasound examination revealed a strong echogenic mass of approximately 1.5 × 1.3 × 1.3 cm in size on the posterior wall of the bladder. The enhanced computed tomography and enhanced magnetic resonance imaging after admission both suggested a well-defined isolated nodular mass on the posterior wall of the bladder with significant enhancement on the enhanced scan. The tumor was successfully and completely resected by ERBT. Postoperative pathological examination and immunohistochemical results confirmed the mass was a bladder PEComa. No tumor recurrence was observed in the six-month postoperative follow-up. CONCLUSION Bladder PEComa is an extremely rare mesenchymal tumor of the urinary system. When imaging and cystoscopy reveal a nodular mass with an abundant blood supply in the bladder, PEComa should be included in the differential diagnosis of bladder tumors. Surgical resection is currently the primary option for the treatment of bladder PEComa. For a solitary, pedunculated, narrow-based, small-sized bladder PEComa, resection of the tumor by ERBT was a safe and feasible approach in our patient and may be considered for similar cases in the future.
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Affiliation(s)
- Shi-Ping Zeng
- grid.507975.9Department of Urology, Zigong First People’s Hospital, Zigong, China
| | - Yi-Fei Sun
- grid.412901.f0000 0004 1770 1022Neurological Disease Laboratory, West China Hospital of Sichuan University, Chengdu, China
| | - Jun-Bing Ye
- grid.507975.9Department of Urology, Zigong First People’s Hospital, Zigong, China
| | - Ke Zeng
- grid.507975.9Department of Urology, Zigong First People’s Hospital, Zigong, China
| | - Xiao-Bin Li
- Department of Urology, Zigong First People's Hospital, Zigong, China.
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Symeonidis EN, Lo KL, Chui KL, Vakalopoulos I, Sountoulides P. En bloc resection of bladder tumors: challenges and unmet needs in 2021. Future Oncol 2022; 18:2545-2558. [PMID: 35642479 DOI: 10.2217/fon-2021-1228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
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.
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Affiliation(s)
- Evangelos N Symeonidis
- First Department of Urology, Aristotle University of Thessaloniki, School of Medicine, "G Gennimatas" General Hospital, Thessaloniki, 54635, Greece
| | - Ka-Lun Lo
- Department of Surgery, Division of Urology, The Chinese University of Hong Kong, Hong Kong SAR, The People's Republic of China
| | - Ka-Lun Chui
- Department of Surgery, Division of Urology, The Chinese University of Hong Kong, Hong Kong SAR, The People's Republic of China
| | - Ioannis Vakalopoulos
- First Department of Urology, Aristotle University of Thessaloniki, School of Medicine, "G Gennimatas" General Hospital, Thessaloniki, 54635, Greece
| | - Petros Sountoulides
- First Department of Urology, Aristotle University of Thessaloniki, School of Medicine, "G Gennimatas" General Hospital, Thessaloniki, 54635, Greece
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Oswald D, Pallauf P, Deininger S, Herrmann TRW, Netsch C, Becker B, Fiedler M, Haecker A, Homberg R, Klein JT, Lehrich K, Miernik A, Olbert P, Schöb DS, Sievert KD, Gross AJ, Westphal J, Lusuardi L. [Safety and efficacy of en bloc vs. conventional transurethral resection of bladder tumors: a meta-analysis and systematic review]. Urologie 2022; 61:644-652. [PMID: 35286433 DOI: 10.1007/s00120-022-01765-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/13/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND En bloc tumor resection of bladder tumors (ERBT) is a novel 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. OBJECTIVE To analyze current data on ERBT in efficacy and safety compared to cTURBT. DATA SOURCES PubMed. STUDY SELECTION Two independent authors identified trials based on keywords and inclusion criteria. A third author was consulted in case of discrepancies. Screening keywords: ERBT, en bloc transurethral resection of bladder tumor, TURBT en bloc. A meta-analysis of 13 studies was performed. The effect size was estimated based on odds ratios and mean differences including their corresponding two-sided 95% confidence intervals. DATA SYNTHESIS The analyzed studies comprised a homogenous 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 2 years of follow-up. CONCLUSION ERBT is a safe 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.
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Affiliation(s)
- D Oswald
- Universitätsklink für Urologie und Andrologie, Paracelsus Medizinische Universität Salzburg, Müllner Hauptstraße 48, 5020, Salzburg, Österreich.
| | - P Pallauf
- Universitätsklink für Urologie und Andrologie, Paracelsus Medizinische Universität Salzburg, Müllner Hauptstraße 48, 5020, Salzburg, Österreich
| | - S Deininger
- Universitätsklink für Urologie und Andrologie, Paracelsus Medizinische Universität Salzburg, Müllner Hauptstraße 48, 5020, Salzburg, Österreich
| | | | - C Netsch
- Abteilung für Urologie, Asklepios Klinik Barmbek, Hamburg, Deutschland
| | - B Becker
- Abteilung für Urologie, Asklepios Klinik Barmbek, Hamburg, Deutschland
| | - M Fiedler
- Klinik für Urologie, SLK-Kliniken Heilbronn GmbH, Heilbronn, Deutschland
| | - A Haecker
- Klinik für Urologie und Kinderurologie, Gesundheitsverbund Landkreis Konstanz, Klinikum Konstanz, Konstanz, Deutschland
| | - R Homberg
- Klinik für Urologie, Kinderurologie und Uro-Gynäkologie, St. Barbara-Klinik Hamm-Heessen, Hamm, Deutschland
| | - J T Klein
- Urologische Klinik am Lerchenberg, Heilbronn, Deutschland
| | - K Lehrich
- Klinik für Urologie, Vivantes Auguste-Viktoria-Klinikum, Berlin, Deutschland
| | - A Miernik
- Medizinische Fakultät, Klinik für Urologie, Universitätsklinikum Freiburg, Freiburg, Deutschland
| | - P Olbert
- BRIXSANA private clinic, Brixen, Italien
| | - D S Schöb
- Medizinische Fakultät, Klinik für Urologie, Universitätsklinikum Freiburg, Freiburg, Deutschland
| | - K D Sievert
- UKOWL, Campus Klinikum Lippe, Detmold, Deutschland
| | - A J Gross
- Abteilung für Urologie, Asklepios Klinik Barmbek, Hamburg, Deutschland
| | - J Westphal
- Klinik für Urologie, Kinderurologie und Urogynäkologie, Krankenhaus Maria Hilf der Alexianer GmbH, Krefeld, Deutschland
| | - L Lusuardi
- Universitätsklink für Urologie und Andrologie, Paracelsus Medizinische Universität Salzburg, Müllner Hauptstraße 48, 5020, Salzburg, Österreich
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Symeonidis EN, Baniotis P, Langas G, Stefanidis P, Tsiakaras S, Stratis M, Savvides E, Bouchalakis A, Petras S, Memmos D, Anastasiadis A, Mykoniatis I, Vakalopoulos I, Toutziaris C, Dimitriadis G, Sountoulides P. En bloc resection, is this the future of non-muscle invasive bladder cancer management? Presentation of our technique and brief review of the literature. Urologia 2022; 90:75-79. [PMID: 35467455 DOI: 10.1177/03915603221093739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
INTRODUCTION The quality of the initial transurethral resection of bladder tumors (TURBT) plays a key role in accurate local staging thus affecting treatment decision-making and disease prognosis. TURBT is still the gold standard for non-muscle invasive bladder cancer (NMIBC). However, en bloc resection of bladder tumors (ERBT) gradually expanded as a promising alternative to TURBT, aiming to overcome certain inherent limitations of conventional resection. We hereby describe a step-by-step bipolar ERBT technique and briefly review the current trends surrounding the role of various en bloc techniques in the field. CASE PRESENTATION We present the case of a 65-year old patient undergoing bipolar ERBT for a single, approximately 2 cm, papillary bladder mass. An experienced urologist completed the procedure within 17 min and without any intra- or postoperative complications. No conversion to TURBT was needed, and an adequate specimen for histological assessment was obtained. The patient made an uneventful recovery, and no recurrence was noted at 12-months. CONCLUSION Our initial experience demonstrates that ERBT via bipolar current is relatively quick, safe, and reliable. Prospective comparative clinical trials will examine its efficacy, and long-term oncological superiority in managing NMIBC.
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Affiliation(s)
- Evangelos N Symeonidis
- First Department of Urology, School of Medicine, "G. Gennimatas" General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Panagiotis Baniotis
- First Department of Urology, School of Medicine, "G. Gennimatas" General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Georgios Langas
- First Department of Urology, School of Medicine, "G. Gennimatas" General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Panagiotis Stefanidis
- First Department of Urology, School of Medicine, "G. Gennimatas" General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Stavros Tsiakaras
- First Department of Urology, School of Medicine, "G. Gennimatas" General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Michail Stratis
- First Department of Urology, School of Medicine, "G. Gennimatas" General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Eliophotos Savvides
- First Department of Urology, School of Medicine, "G. Gennimatas" General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Athanasios Bouchalakis
- First Department of Urology, School of Medicine, "G. Gennimatas" General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Stefanos Petras
- Department of Pathology, "G. Gennimatas" General Hospital, Thessaloniki, Greece
| | - Dimitrios Memmos
- First Department of Urology, School of Medicine, "G. Gennimatas" General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Anastasios Anastasiadis
- First Department of Urology, School of Medicine, "G. Gennimatas" General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ioannis Mykoniatis
- First Department of Urology, School of Medicine, "G. Gennimatas" General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ioannis Vakalopoulos
- First Department of Urology, School of Medicine, "G. Gennimatas" General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Chrysovalantis Toutziaris
- First Department of Urology, School of Medicine, "G. Gennimatas" General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Georgios Dimitriadis
- First Department of Urology, School of Medicine, "G. Gennimatas" General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Petros Sountoulides
- First Department of Urology, School of Medicine, "G. Gennimatas" General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Teoh JYC, Mayor N, Li KM, Lo KL, Ng CF, Mostafid H. En-bloc resection of bladder tumour as primary treatment for patients with non-muscle-invasive bladder cancer: routine implementation in a multi-centre setting. World J Urol 2021; 39:3353-3358. [PMID: 33774705 DOI: 10.1007/s00345-021-03675-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 03/16/2021] [Indexed: 10/21/2022] Open
Abstract
PURPOSE To investigate the technical success rate and 30-day complications of en-bloc resection of bladder tumour (ERBT) upon routine implementation regardless of tumour size. METHODS This is a prospective, multi-centre, study on routine implementation of ERBT for patients with bladder tumours requiring transurethral surgery. Surgeons were allowed to cross over to conventional transurethral resection of bladder tumour (TURBT) when necessary. We performed an analysis for patients who had ERBT/TURBT as the definitive treatment. Study outcomes included the technical success rate of ERBT and 30-day complication rate. Multivariate logistic regression analysis was performed to investigate for predictors of a successful ERBT and factors associated with 30-day complications. RESULTS A total of 135 patients were included in this study. The majority of the patients (80.0%) had bladder tumours of ≤ 3 cm. ERBT was successful in 99 patients, resulting in an overall technical success rate of 73.3%. When stratified according to tumour size, the technical success rates of ERBT were 94.3%, 82.2%, 75%, 84.3% and 29.6% for bladder tumour sizes of < 1 cm, 1.01-2 cm, 2.01-3 cm, ≤ 3 cm and > 3 cm respectively. Upon multivariate analysis, tumour size was the only significant factor predicting the success of ERBT (OR 0.920, 95% CI 0.882-0.960, p < 0.001). Moreover, ERBT was not a significant factor associated with 30-day complications. CONCLUSION EBRT achieved a good technical success rate for the majority of patients with bladder tumours ≤ 3 cm. Regardless of tumour size, EBRT-first approach was safe to implement into routine clinical practice.
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Affiliation(s)
- Jeremy Yuen-Chun Teoh
- Department of Surgery, S.H. Ho Urology Centre, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China.
| | - Nikhil Mayor
- Department of Urology, Royal Surrey County Hospital, Guildford, Surrey, UK
| | - Kai-Man Li
- Department of Surgery, North District Hospital, Hong Kong, China
| | - Ka-Lun Lo
- Department of Surgery, North District Hospital, Hong Kong, China
| | - Chi-Fai Ng
- Department of Surgery, S.H. Ho Urology Centre, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Hugh Mostafid
- Department of Urology, Royal Surrey County Hospital, Guildford, Surrey, UK.
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Struck JP, Kramer MW, Katzendorn O, Hupe MC, Ozimek T, Hennig MJP, Wießmeyer JR, von Klot CAJ, Kuczyk MA, Kreipe HH, Merseburger AS, Perner S, Dressler FF. Bicentric Retrospective Analysis of en Bloc Resection and Muscularis Mucosae Detection Rate in Non-Muscle Invasive Bladder Tumors: A Real-World Scenario. Adv Ther 2021; 38:258-67. [PMID: 33094476 DOI: 10.1007/s12325-020-01529-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 10/08/2020] [Indexed: 11/16/2022]
Abstract
Introduction For risk stratification of non-muscle invasive bladder cancer (NMIBC), the depth of stromal invasion can be further classified, where the lamina muscularis mucosae (MM) serves as a reference structure. While the overall identifiability of MM in standard transurethral specimens is low, en bloc resection may help in identification and overall orientation. The aims of this study were to report the detection rate of MM in en bloc resected bladder tumors (ERBT) and to provide real-world information on tissue stability and preservation of en bloc architecture during recovery and processing for histopathologic evaluation. Methods Thirty-four ERBT specimens were histologically re-evaluated with regard to MM detectability and structure as well as the presence of en bloc architecture and further histologic features. Associations with tumor size and energy source and within histologic parameters were assessed by standard Pearson's chi-squared analyses and Cramér’s V effect size testing (V). Results The first parameter assessed was MM detection rate. In 19 out of 34 samples (56%) MM was detectable: scattered in 9 cases (26%), interrupted in 8 cases (24%) and continuous in 2 cases (6%). The second parameter assessed was preservation of en bloc architecture. In 11 out of 34 samples (32%), en bloc architecture could not be confirmed, and these samples served as a reference group for the detection of MM. Preservation of en bloc architecture was associated with an increased MM detection rate (MM in en bloc preserved 16/23, 70% vs. non-preserved 3/11, 27%; p = 0.020; V = 0.398) and with tumor size (p = 0.005; V = 0.595). Medium-sized tumors (1.1–2 cm) were best preserved. The choice of energy source did not show relevant association with en bloc architecture (p = n.s.). Conclusions In line with recent publications, ERBT increases the MM detection rate considerably. However, a third of the ERBT specimens lost en bloc architecture during sample recovery and processing. Tumor size is a relevant factor, with optimal architecture preservation between 1 and 2 cm. Optimizing resection techniques, recovery, transport, and diagnostic processing of ERBT samples is warranted to verify the diagnostic value of MM-based substaging.
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