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Rosenbaum CM, Netsch C, Filmar S, Hook S, Gross AJ, Becker B. [Organ-preserving treatment for urothelial carcinoma of the upper urinary tract]. UROLOGIE (HEIDELBERG, GERMANY) 2024:10.1007/s00120-024-02422-3. [PMID: 39269527 DOI: 10.1007/s00120-024-02422-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/25/2024] [Indexed: 09/15/2024]
Abstract
Urothelial carcinoma of the upper urinary tract is rare but the incidence is currently increasing in western countries. Radical nephroureterectomy has long been the standard treatment; however, it can lead to chronic kidney failure and also the necessity for dialysis. Therefore, organ-preserving treatment is now recommended for selected patients with low-risk tumors. The choice of treatment depends on the tumor characteristics, comorbidities and individual risk factors. Surgical options for organ preservation include ureterorenoscopy (URS), percutaneous treatment and partial ureteral resection. The URS is the most frequently used method for organ preservation. Photodynamic diagnostics (PDD) and narrow band imaging (NBI) can potentially also be used for tumor detection in the upper urinary tract. Conservative options such as topical treatment with mitomycin C or Bacillus Calmette-Guérin (BCG) and systemic treatment options are also possible.
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Affiliation(s)
- Clemens M Rosenbaum
- Klinik für Urologie, Asklepios Klinik Barmbek, Rübenkamp 220, 22307, Hamburg, Deutschland.
- Klinik für Urologie, Universitätsklinikum Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Deutschland.
| | - Christopher Netsch
- Klinik für Urologie, Asklepios Klinik Barmbek, Rübenkamp 220, 22307, Hamburg, Deutschland
| | - Simon Filmar
- Klinik für Urologie, Asklepios Klinik Barmbek, Rübenkamp 220, 22307, Hamburg, Deutschland
| | - Sophia Hook
- Klinik für Urologie, Asklepios Klinik Barmbek, Rübenkamp 220, 22307, Hamburg, Deutschland
| | - Andreas J Gross
- Klinik für Urologie, Asklepios Klinik Barmbek, Rübenkamp 220, 22307, Hamburg, Deutschland
| | - Benedikt Becker
- Klinik für Urologie, Asklepios Klinik Barmbek, Rübenkamp 220, 22307, Hamburg, Deutschland
- Klinik für Urologie, Universitätsklinikum Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Deutschland
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Gravestock P, Cullum D, Somani B, Veeratterapillay R. Diagnosing upper tract urothelial carcinoma: A review of the role of diagnostic ureteroscopy and novel developments over last two decades. Asian J Urol 2024; 11:242-252. [PMID: 38680592 PMCID: PMC11053284 DOI: 10.1016/j.ajur.2022.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 08/13/2022] [Indexed: 11/29/2022] Open
Abstract
Objective The role of ureteroscopy in the diagnosis of upper tract urothelial carcinoma is yet to be fully determined. We aimed to provide an up to date evaluation of its role and the emerging technologies in the field. Methods A literature search of the last two decades (from 24th May, 2001 to 24th May, 2021) was carried out identifying 147 papers for potential inclusion within this narrative review. Results Diagnostic ureteroscopy is undeniably useful in its ability to visualise and biopsy indeterminate lesions, and to risk stratify malignant lesions that may be suitable for kidney sparing surgery. However, an increased risk of intravesical recurrence following nephroureterectomy when a prior diagnostic ureteroscopy has been performed, inadequate sampling at biopsy, complications from the procedure, and difficult ureteric access are all potential drawbacks. Furthermore, whilst generally an accurate diagnostic procedure, it risks missing carcinoma in-situ lesions. Despite this, evidence shows that routine use of ureteroscopy changes the management of patients in a large proportion of cases, preventing unnecessary surgery or facilitating kidney sparing surgery. The overall rate of complications is low, and improved biopsy techniques and the use of tissue biomarkers for improved staging and grading are encouraging. The risks of delays to definitive management and post-ureteroscopy intravesical recurrence do not seem to affect survival, and trials are in progress to determine whether intravesical therapy can mitigate the latter. Further promising techniques are being investigated to improve shortcomings, particularly in relation to improved diagnosis of carcinoma in situ and preoperative staging. Conclusion Ureteroscopy has a role in the diagnosis of upper tract malignancy, though whether it should be used routinely is yet to be determined.
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Affiliation(s)
- Paul Gravestock
- Urology Department, Freeman Hospital, Newcastle Upon Tyne, UK
| | - Daniel Cullum
- Urology Department, Freeman Hospital, Newcastle Upon Tyne, UK
| | - Bhaskar Somani
- Department of Urology, University Hospital Southampton, Southampton, UK
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Yoshida T, Ohe C, Nakamoto T, Kinoshita H. Learning from the past and present to change the future: Endoscopic management of upper urinary tract urothelial carcinoma. Int J Urol 2023; 30:634-647. [PMID: 37294007 DOI: 10.1111/iju.15208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 05/09/2023] [Indexed: 06/10/2023]
Abstract
Current guidelines recommend endoscopic management (EM) for patients with low-risk upper urinary tract urothelial carcinoma, as well as those with an imperative indication. However, regardless of the tumor risk, radical nephroureterectomy is still mainly performed worldwide despite the benefits of EM, such as renal function maintenance, no hemodialysis requirement, and treatment cost reduction. This might be explained by the association of EM with a high risk of local recurrence and progression. Furthermore, the need for rigorous patient selection and close surveillance following EM may be relevant. Nevertheless, recent developments in diagnostic modalities, pathological evaluation, surgical devices and techniques, and intracavitary regimens have been reported, which may contribute to improved risk stratification and treatments with superior oncological outcomes. In this review, considering recent advances in endourology and oncology, we propose novel treatment strategies for optimal EM.
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Affiliation(s)
- Takashi Yoshida
- Department of Urology and Andrology, Kansai Medical University, Osaka, Japan
- Corporate Sponsored Research Programs for Multicellular Interactions in Cancer, Kansai Medical University, Osaka, Japan
| | - Chisato Ohe
- Corporate Sponsored Research Programs for Multicellular Interactions in Cancer, Kansai Medical University, Osaka, Japan
- Department of Pathology, Kansai Medical University, Osaka, Japan
| | - Takahiro Nakamoto
- Department of Urology and Andrology, Kansai Medical University, Osaka, Japan
- Department of Pathology, Kansai Medical University, Osaka, Japan
| | - Hidefumi Kinoshita
- Department of Urology and Andrology, Kansai Medical University, Osaka, Japan
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Hao H, Wang X, Qin Y, Ma Z, Yan P, Liu C, Chen G, Yang X. Ex vivo near-infrared targeted imaging of human bladder carcinoma by ICG-anti-CD47. Front Oncol 2023; 13:1083553. [PMID: 36937442 PMCID: PMC10014561 DOI: 10.3389/fonc.2023.1083553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 02/17/2023] [Indexed: 03/05/2023] Open
Abstract
Objective The low detection rate of early-stage and small tumors remains a clinical challenge. A solution to this unmet need is urgently warranted for the accurate diagnosis and treatment of bladder cancer (BC). This study aimed to evaluate the feasibility of CD47 as a target for optical molecular imaging of human BC and conduct preliminary ex vivo imaging experiments. Method Using indocyanine green (ICG) and a CD47 antibody (anti-CD47), we synthesized a new targeted fluorescent probe ICG-anti-CD47. A total of 25 patients undergoing radical cystectomy were prospectively included in ex vivo imaging experiments. Following surgery, the freshly isolated bladder specimens were incubated with ICG-anti-CD47, and images were captured under white light and near-infrared (NIR) light. Standard histopathologic evaluation was performed, and findings were correlated with those of CD47-targeted NIR molecular imaging. Results Based on the ex vivo imaging experiments, 23 and 2 patients were pathologically diagnosed with bladder urothelial carcinoma and bladder squamous cell carcinoma, respectively. There were no adverse effects of ICG-anti-CD47 on the histological structure of the tumor and normal uroepithelium. In the NIR grayscale images, the mean fluorescence intensity of the tumor tissue was significantly higher than that of the adjacent normal background tissue, which markedly improved tumor visualization. Conclusion Anti-CD47-targeted NIR molecular imaging may be a feasible and powerful strategy for the accurate diagnosis of BC. Nevertheless, larger-scale randomized trials are warranted to verify the present findings.
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Affiliation(s)
- Haifeng Hao
- Department of Urology, First Hospital of Shanxi Medical University, Taiyuan, China
| | - Xinyu Wang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China
| | - Yan Qin
- Department of Gastroenterology, Shanxi Provincial People’s Hospital, Taiyuan, China
| | - Zhifang Ma
- Department of Urology, First Hospital of Shanxi Medical University, Taiyuan, China
| | - Pengyu Yan
- Department of Urology, First Hospital of Shanxi Medical University, Taiyuan, China
| | - Chao Liu
- Department of Urology, First Hospital of Shanxi Medical University, Taiyuan, China
| | - Guanying Chen
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China
- *Correspondence: Xiaofeng Yang, ; Guanying Chen,
| | - Xiaofeng Yang
- Department of Urology, First Hospital of Shanxi Medical University, Taiyuan, China
- *Correspondence: Xiaofeng Yang, ; Guanying Chen,
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Ham WS, Park JS, Jang WS, Kim J. Nephron-Sparing Approaches in Upper Tract Urothelial Carcinoma: Current and Future Strategies. Biomedicines 2022; 10:biomedicines10092223. [PMID: 36140325 PMCID: PMC9496458 DOI: 10.3390/biomedicines10092223] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/01/2022] [Accepted: 09/04/2022] [Indexed: 11/23/2022] Open
Abstract
Upper tract urothelial carcinoma (UTUC) is a relatively rare cancer, and much of the approach to treatment has been derived from strategies employed in treating bladder cancer. Radical nephroureterectomy (RNU) is regarded as the gold standard treatment for UTUC. However, due to potential complications, such as renal function impairment, that can affect oncologic outcomes, the demand for nephron-sparing treatment to effectively treat cancer while preserving renal function has increased. As a result, various treatment methods for low-grade, low-volume UTUC, such as segmental ureterectomy, endoscopic resection, and intraluminal therapy, have been attempted and reported. Although these treatment modalities have exhibited acceptable oncological results, further studies are required. In the future, the introduction of new technologies, such as improved diagnostic and surgical equipment, and new drug delivery systems, could enhance the effectiveness of nephron-sparing strategies in the treatment of UTUC. Additionally, understanding the biological and genetic characteristics of UTUC that distinguish it from those of bladder cancer will also aid in establishing strategies for nephron-sparing.
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Affiliation(s)
- Won Sik Ham
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Jee Soo Park
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul 03722, Korea
- Department of Urology, Sorokdo National Hospital, Goheung 59562, Korea
| | - Won Sik Jang
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Jongchan Kim
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul 03722, Korea
- Department of Urology, Yongin Severance Hospital, Yonsei University Health System, Yongin 16995, Korea
- Correspondence: ; Tel.: +82-31-5189-8479; Fax: +82-31-5189-8568
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Yan P, Chen D, Yan X, Yan X, Wang Y, Liu C, Yang X. Ex Vivo Near-Infrared Molecular Imaging of Human Upper Urinary Tract Urothelial Carcinoma With a CD47-Based Targeted Tracer. Front Oncol 2022; 12:825476. [PMID: 35295998 PMCID: PMC8919026 DOI: 10.3389/fonc.2022.825476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 01/31/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectiveThe low detection rate of early and small tumors remains a clinical problem that urgently needs to be solved in the accurate diagnosis and treatment of upper urinary tract urothelial carcinoma (UTUC). The objective of this study is to evaluate the feasibility of CD47 as a target for optical molecular imaging of human UTUC and conduct preliminary ex vivo imaging experiments.MethodsWe firstly analyzed the genome-wide mRNA expression data from Gene Expression Omnibus (GEO). Paraffin-embedded tissue specimens comprising UTUC and normal urothelium were collected. All tissue specimens were used for immunohistochemistry to compare CD47 protein expression in normal and cancer tissue. Meanwhile, 12 patients undergoing radical nephroureterectomy were prospectively included in ex vivo imaging experiments. Freshly isolated upper urinary tract specimens were incubated with anti-CD47-Alexa Fluor 790 and then imaged under white light and near-infrared (NIR) light. Standard histopathologic evaluation was performed, and findings were correlated with CD47-targeted NIR molecular imaging.ResultsThe GEO data revealed that CD47 mRNA expression was higher in UTUC specimens than that in paracancer normal tissue. In immunohistochemical analysis, the CD47 protein expression level was higher in both non-muscle-invasive and muscle-invasive (stage ≥T2) UTUCs than that in normal uroepithelium, and the localization of CD47 protein was the tumor cell membrane. In the ex vivo imaging experiments, all patients were pathologically diagnosed with UTUC, and no adverse effects of anti-CD47-Alexa Fluor 790 on the histological structure of the tumor and normal uroepithelium were observed. In the NIR grayscale images, the mean fluorescence intensity of the tumor tissue was significantly higher than that of the adjacent normal background tissue, which greatly improved the visualization of the tumor.ConclusionsCD47-targeted NIR molecular imaging could be a feasible and powerful strategy for the accurate diagnosis of UTUC. Larger-scale randomized trials are needed.
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Affiliation(s)
- Pengyu Yan
- Department of Urology, First Hospital of Shanxi Medical University, Taiyuan, China
| | - Dan Chen
- Department of Pathology and Cancer Research Center, Yanbian University Medical College, Yanji, China
| | - Xutao Yan
- Department of Urology, First Hospital of Shanxi Medical University, Taiyuan, China
| | - Xiaoting Yan
- Department of Urology, First Hospital of Shanxi Medical University, Taiyuan, China
| | - Yingpeng Wang
- Department of Urology, First Hospital of Shanxi Medical University, Taiyuan, China
| | - Chao Liu
- Department of Urology, First Hospital of Shanxi Medical University, Taiyuan, China
- *Correspondence: Xiaofeng Yang, ; Chao Liu,
| | - Xiaofeng Yang
- Department of Urology, First Hospital of Shanxi Medical University, Taiyuan, China
- *Correspondence: Xiaofeng Yang, ; Chao Liu,
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Cinque A, Capasso A, Vago R, Floris M, Lee MW, Minnei R, Trevisani F. MicroRNA Signatures in the Upper Urinary Tract Urothelial Carcinoma Scenario: Ready for the Game Changer? Int J Mol Sci 2022; 23:2602. [PMID: 35269744 PMCID: PMC8910117 DOI: 10.3390/ijms23052602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 02/20/2022] [Accepted: 02/24/2022] [Indexed: 12/18/2022] Open
Abstract
Upper urinary tract urothelial carcinoma (UTUC) represents a minor subgroup of malignancies arising in the urothelium of the renal pelvis or ureter. The estimated annual incidence is around 2 cases per 100,000 people, with a mean age at diagnosis of 73 years. UTUC is more frequently diagnosed in an invasive or metastatic stage. However, even though the incidence of UTUC is not high, UTUC tends to be aggressive and rapidly progressing with a poor prognosis in some patients. A significant challenge in UTUC is ensuring accurate and timely diagnosis, which is complicated by the non-specific nature of symptoms seen at the onset of disease. Moreover, there is a lack of biomarkers capable of identifying the early presence of the malignancy and guide-tailored medical treatment. However, the growing understanding of the molecular biology underlying UTUC has led to the discovery of promising new biomarkers. Among these biomarkers, there is a class of small non-coding RNA biomarkers known as microRNAs (miRNAs) that are particularly promising. In this review, we will analyze the main characteristics of UTUC and focus on microRNAs as possible novel tools that could enter clinical practice in order to optimize the current diagnostic and prognostic algorithm.
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Affiliation(s)
- Alessandra Cinque
- Biorek S.r.l., San Raffaele Scientific Institute, 20132 Milan, Italy;
| | - Anna Capasso
- Department of Medical Oncology Livestrong Cancer Institutes, Dell Medical School, University of Texas at Austin, Austin, TX 78723, USA;
| | - Riccardo Vago
- Urological Research Institute, Division of Experimental Oncology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy;
- Faculty of Medicine and Surgery,, Università Vita-Salute San Raffaele, 20132 Milan, Italy
| | - Matteo Floris
- Nephrology, Dialysis, and Transplantation, Università degli Studi di Cagliari, G. Brotzu Hospital, 09134 Cagliari, Italy; (M.F.); (R.M.)
| | - Michael W. Lee
- Department of Medical Oncology and Medical Education, Dell Medical School, Livestrong Cancer Institutes, University of Texas at Austin, Austin, TX 78723, USA;
| | - Roberto Minnei
- Nephrology, Dialysis, and Transplantation, Università degli Studi di Cagliari, G. Brotzu Hospital, 09134 Cagliari, Italy; (M.F.); (R.M.)
| | - Francesco Trevisani
- Biorek S.r.l., San Raffaele Scientific Institute, 20132 Milan, Italy;
- Urological Research Institute, Division of Experimental Oncology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy;
- Unit of Urology, San Raffaele Scientific Institute, 20132 Milan, Italy
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Olson KM, Faraj KS, Singh P, Tyson MD. Treatment of Upper Tract Urothelial Carcinoma. Urol Oncol 2022. [DOI: 10.1007/978-3-030-89891-5_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Soria F, Laguna MP, Roupret M, Garcia-Marchinena P, Gonzalez MS, Habuchi T, Erkan E, Ng A, Gontero P, de la Rosette J. Flexible fibre optic vs digital ureteroscopy and enhanced vs unenhanced imaging for diagnosis and treatment of upper tract urothelial carcinoma (UTUC): results from the Clinical Research Office of the Endourology Society (CROES)-UTUC registry. BJU Int 2021; 128:734-743. [PMID: 34028166 PMCID: PMC9292011 DOI: 10.1111/bju.15494] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Objectives To compare the oncological outcomes of patients with upper tract urothelial carcinoma (UTUC) undergoing kidney‐sparing surgery (KSS) with fibre‐optic (FO) vs digital (D) ureteroscopy (URS). To evaluate the oncological impact of image‐enhancement technologies such as narrow‐band imaging (NBI) and Image1‐S in patients with UTUC. Patients and Methods The Clinical Research Office of the Endourology Society (CROES)‐UTUC registry is an international, multicentre, cohort study prospectively collecting data on patients with UTUC. Patients undergoing flexible FO‐ or D‐URS for diagnostic or diagnostic and treatment purposes were included. Differences between groups in terms of overall survival (OS) and disease‐free survival (DFS) were evaluated. Results The CROES registry included 2380 patients from 101 centres and 37 countries, of whom 401 patients underwent URS (FO‐URS 186 and D‐URS 215). FO‐URS were performed more frequently for diagnostic purposes, while D‐URS was peformed when a combined diagnostic and treatment strategy was planned. Intra‐ and postoperative complications did not differ between the groups. The 5‐year OS and DFS rates were 91.5% and 66.4%, respectively. The mean OS was 42 months for patients receiving FO‐URS and 39 months for those undergoing D‐URS (P = 0.9); the mean DFS was 28 months in the FO‐URS group and 21 months in the D‐URS group (P < 0.001). In patients who received URS with treatment purposes, there were no differences in OS (P = 0.9) and DFS (P = 0.7). NBI and Image1‐S technologies did not improve OS or DFS over D‐URS. Conclusions D‐URS did not provide any oncological advantage over FO‐URS. Similarly, no differences in terms of OS and DFS were found when image‐enhancement technologies were compared to D‐URS. These findings underline the importance of surgeon skills and experience, and reinforce the need for the centralisation of UTUC care.
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Affiliation(s)
- Francesco Soria
- Division of Urology, Department of Surgical Sciences, San Giovanni Battista Hospital, University of Studies of Torino, Turin, Italy
| | - M Pilar Laguna
- Department of Urology, Medipol Mega University Hospital, Istanbul Medipol University, Istanbul, Turkey
| | - Morgan Roupret
- GRC 5 Predictive ONCO-URO, AP-HP, Urology, Pitie-Salpetriere Hospital, Sorbonne University, Paris, France
| | | | | | | | - Erkan Erkan
- TCSB Istanbul Training Hospital, Istanbul, Turkey
| | - Anthony Ng
- SH Ho Urology Centre, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - Paolo Gontero
- Division of Urology, Department of Surgical Sciences, San Giovanni Battista Hospital, University of Studies of Torino, Turin, Italy
| | - Jean de la Rosette
- Department of Urology, Medipol Mega University Hospital, Istanbul Medipol University, Istanbul, Turkey
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Photodynamic diagnostic ureteroscopy using the VISERA ELITE video system for diagnosis of upper-urinary tract urothelial carcinoma: a prospective cohort pilot study. BMC Urol 2021; 21:45. [PMID: 33765999 PMCID: PMC7995577 DOI: 10.1186/s12894-021-00819-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 03/15/2021] [Indexed: 11/24/2022] Open
Abstract
Background The advantages of photodynamic diagnostic technology using 5-aminolevulinic acid (ALA-PDD) have been established. The aim of this prospective cohort study was to evaluate the usefulness of ALA-PDD to diagnose upper tract urothelial carcinoma (UT-UC) using the Olympus VISERA ELITE video system. Methods We carried out a prospective, interventional, non-randomized, non-contrast and open label cohort pilot study that involved patients who underwent ureterorenoscopy (URS) to detect UT-UC. 5-aminolevulinic acid hydrochloride was orally administered before URS. The observational results and pathological diagnosis with ALA-PDD and traditional white light methods were compared, and the proportion of positive subjects and specimens were calculated. Results A total of 20 patients were enrolled and one patient who had multiple bladder tumors did not undergo URS. Fifteen of 19 patients were pathologically diagnosed with UT-UC and of these 11 (73.3%) were ALA-PDD positive. Fourteen of 19 patients were ALA-PDD positive and of these 11 were pathologically diagnosed with UC. For the 92 biopsy specimens that were malignant or benign, the sensitivity for both traditional white light observation and ALA-PDD was the same at 62.5%, whereas the specificities were 73.1% and 67.3%, respectively. Of the 38 specimens that were randomly biopsied without any abnormality under examination by both white light and ALA-PDD, 11 specimens (28.9%) from 5 patients were diagnosed with high grade UC. In contrast, four specimens from 4 patients, which were negative in traditional white light observation but positive in ALA-PDD, were diagnosed with carcinoma in situ (CIS). Conclusions Our results suggest that ALA-PDD using VISERA ELITE is not sufficiently applicable for UT-UC. Nevertheless, it might be better particularly for CIS than white light and superior results would be obtained using VISERA ELITE II video system. Trial registration: The present clinical study was approved by the Okayama University Institutional Review Board prior to study initiation (Application no.: RIN 1803–002) and was registered with the UMIN Clinical Trials Registry (UMIN-CTR), Japan (Accession no.: UMIN000031205).
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11
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Farrow JM, Kern SQ, Gryzinski GM, Sundaram CP. Nephron-sparing management of upper tract urothelial carcinoma. Investig Clin Urol 2021; 62:389-398. [PMID: 34190434 PMCID: PMC8246013 DOI: 10.4111/icu.20210113] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 05/12/2021] [Accepted: 06/07/2021] [Indexed: 11/18/2022] Open
Abstract
Urothelial carcinoma of the upper urinary tract is uncommon and presents unique challenges for diagnosis and management. Nephroureterectomy has been the preferred management option, but it is associated with significant morbidity. Nephron-sparing treatments are a valuable alternative and provide similar efficacy in select cases. A PubMed literature review was performed in English language publications using the following search terms: urothelial carcinoma, upper tract, nephron-sparing, intraluminal and systemic therapy. Contemporary papers published within the last 10 years were primarily included. Where encountered, systematic reviews and meta-analyses were given priority, as were randomized controlled trials for newer treatments. Core guidelines were referenced and citations reviewed for inclusion. A summary of epidemiological data, clinical diagnosis, staging, and treatments focusing on nephron-sparing approaches to upper tract urothelial carcinoma (UTUC) are outlined. Nephron-sparing management strategies are viable options to consider in patients with favorable features of UTUC. Adjunctive therapies are being investigated but the data remains mixed. Protocol variability and dosage differences limit statistical interpretation. New mechanisms to improve treatment dwell times in the upper tracts are being designed with promising preliminary results. Studies investigating systemic therapies are ongoing but implications for nephron-sparing management are uncertain. Nephron-sparing management is an acceptable treatment modality best suited for favorable disease. More work is needed to determine if intraluminal and/or systemic therapies can further optimize treatment outcomes beyond resection alone.
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Affiliation(s)
- Jason M Farrow
- Department of Urology, Indiana University School of Medicine, Indianapolis, IN, USA.
| | - Sean Q Kern
- Department of Urology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Gustavo M Gryzinski
- Department of Urology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Chandru P Sundaram
- Department of Urology, Indiana University School of Medicine, Indianapolis, IN, USA
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12
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Vali Y, Yang B, Olsen M, Leeflang MMG, Bossuyt PMM. Reporting of test comparisons in diagnostic accuracy studies: A literature review. Res Synth Methods 2020; 12:357-367. [PMID: 33217225 PMCID: PMC8246725 DOI: 10.1002/jrsm.1469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 10/29/2020] [Accepted: 11/17/2020] [Indexed: 12/22/2022]
Abstract
Comparative accuracy studies evaluate the relative performance of two or more diagnostic tests. As any other form of research, such studies should be reported in an informative manner, to allow replication and to be useful for decision‐making. In this study we aimed to assess whether and how components of test comparisons were reported in comparative accuracy studies. We evaluated 100 comparative accuracy studies, published in 2015, 2016 or 2017, randomly sampled from 238 comparative accuracy systematic reviews. We extracted information on 20 reporting items, pertaining to the identification of the test comparison, its validity, and the actual results of the comparison. About a third of the studies (n = 36) did not report the comparison as a study objective or hypothesis. Although most studies (n = 86) reported how participants had been allocated to index tests, we could often not evaluate whether test interpreters had been blinded to the results of other index tests (n = 40; among 59 applicable studies), nor could we identify the sequence of index tests (n = 52; among 90 applicable studies) or the methods for comparing measures of accuracy (n = 59). Two‐by‐four table data (revealing the agreement between index tests) were only reported by 9 of 90 paired comparative studies. More than half of the studies (n = 64) did not provide measures of statistical imprecision for comparative accuracy. Our findings suggest that components of test comparisons are frequently missing or incompletely described in comparative accuracy studies included in systematic reviews. Explicit guidance for reporting comparative accuracy studies may facilitate the production of full and informative study reports.
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Affiliation(s)
- Yasaman Vali
- Department of Epidemiology and Data Science, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Bada Yang
- Department of Epidemiology and Data Science, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Maria Olsen
- Department of Epidemiology and Data Science, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Mariska M G Leeflang
- Department of Epidemiology and Data Science, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Patrick M M Bossuyt
- Department of Epidemiology and Data Science, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
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13
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Diagnostic accuracy of photodynamic diagnosis for upper urinary tract urothelial carcinoma: A systematic review and meta-analysis. Photodiagnosis Photodyn Ther 2020; 32:102067. [PMID: 33096285 DOI: 10.1016/j.pdpdt.2020.102067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 09/30/2020] [Accepted: 10/13/2020] [Indexed: 11/21/2022]
Abstract
BACKGROUND This study aimed to evaluate the effectiveness of photodynamic diagnosis (PDD) for upper urinary tract urothelial carcinoma (UTUC) by performing a meta-analysis. METHOD Relevant articles were retrieved from the Cochrane Library, PubMed, and Embase databases. Studies evaluating the accuracy of PDD for the diagnosis of upper UTUC were included. The pooled sensitivity, specificity, and area under the curve (AUC) were calculated by STATA 16.0 at the per-lesion level. RESULTS Six studies with 289 lesions were included in this systematic review and meta-analysis. The pooled results showed that PDD can differentiate upper UTUC from benign lesions with a sensitivity of 0.96 (95 % confidence interval: 0.85-0.99) and a specificity of 0.86 (95 % confidence interval: [0.64-0.95]; AUC, 0.97). Compared with white-light ureterorenoscopy, PDD can significantly improve the additional detection rate of UTUC (RR 0.16, 95 % CI 0.07-0.34 P = 0.000). CONCLUSIONS PDD is a valid technique that improves the diagnostic accuracy of UTUC compared with standard white-light ureterorenoscopy at the per-lesion level. PDD is a promising endoscopic technique for upper UTUC.
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14
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Schuettfort VM, Pradere B, Quhal F, Mostafaei H, Laukhtina E, Mori K, Motlagh RS, Rink M, D'Andrea D, Abufaraj M, Karakiewicz PI, Shariat SF. Diagnostic challenges and treatment strategies in the management of upper-tract urothelial carcinoma. Turk J Urol 2020; 47:S33-S44. [PMID: 33052841 DOI: 10.5152/tud.2020.20392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 09/03/2020] [Indexed: 01/19/2023]
Abstract
Upper-tract urothelial carcinoma (UTUC) is a rare disease, posing many challenges for the treating physician due to the lack of strong evidence-based recommendations. However, novel molecular discoveries and a better understanding of the clinical behavior of the disease lead to a continuous evolution of therapeutic landscape in UTUC. The aim of the review is to provide a comprehensive update of the current diagnostic modalities and treatment strategies in UTUC with a special focus on recent developments and challenges. A comprehensive literature search including relevant articles up to August 2020 was performed using the MEDLINE/PubMed database. Despite several technological improvements, accurate staging and outcome prediction remain major challenges and hamper appropriate risk stratification. Kidney-sparing surgery can be offered in low risk UTUC; however, physician and patient must be aware of the high rate of recurrence and risk of progression due to tumor biology and understaging. The value and efficacy of intracavitary therapy in patients with UTUC remains unclear due to the lack of high-quality data. In high-risk diseases, radical nephroureterectomy with bladder cuff excision and template lymph node dissection is the standard of care. Perioperative systemic chemotherapy is today accepted as a novel standard for advanced cancers. In metastatic or unresectable disease, the therapeutic landscape is rapidly changing due to several novel agents, such as checkpoint inhibitors. While several diagnostic and treatment challenges remain, progress in endoscopic technology and molecular knowledge have ushered a new age in personalized management of UTUC. Novel accurate molecular and imaging biomarkers are, however, still needed to guide decision making as tissue acquisition remains suboptimal. Next generation sequencing and novel agents are promising to rapidly improve patient outcomes.
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Affiliation(s)
- Victor M Schuettfort
- Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria.,Department of Urology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Benjamin Pradere
- Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria.,Department of Urology, University Hospital of Tours, Tours, France
| | - Fahad Quhal
- Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria.,Department of Urology, King Fahad Specialist Hospital, Dammam, Saudi Arabia
| | - Hadi Mostafaei
- Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria.,Research Center for Evidence Based Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ekaterina Laukhtina
- Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria.,Institute for Urology and Reproductive Health, Sechenov University, Moscow, Russia
| | - Keiichiro Mori
- Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria.,Department of Urology, The Jikei University School of Medicine, Tokyo, Japan
| | - Reza Sari Motlagh
- Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Michael Rink
- Department of Urology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - David D'Andrea
- Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Mohammad Abufaraj
- Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria.,Division of Urology, Department of Special Surgery, Jordan University Hospital, The University of Jordan, Amman, Jordan
| | - Pierre I Karakiewicz
- Cancer Prognostics and Health Outcomes Unit, Division of Urology, University of Montreal Health Center, Montreal, Canada
| | - Shahrokh F Shariat
- Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria.,Department of Urology, Weill Cornell Medical College, New York, New York, USA.,Department of Urology, University of Texas Southwestern, Dallas, Texas, USA.,Department of Urology, Second Faculty of Medicine, Charles University, Prague, Czech Republic.,Karl Landsteiner Institute of Urology and Andrology, Vienna, Austria.,European Association of Urology Research Foundation, Arnhem, Netherlands.,Institute for Urology and Reproductive Health, Sechenov University, Moscow, Russia
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15
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Metcalf M, Pierorazio PM. Future strategies to enhance kidney preservation in upper urinary tract urothelial carcinoma. Transl Androl Urol 2020; 9:1831-1840. [PMID: 32944547 PMCID: PMC7475682 DOI: 10.21037/tau.2019.11.09] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Though radical nephroureterectomy remains the gold standard treatment for high grade or invasive disease in upper tract urothelial cancer (UTUC), kidney-sparing surgery has become preferred for low risk disease, in order to minimize morbidity and preserve renal function. Many methods exist for endoscopic management, whether via an antegrade percutaneous or retrograde ureteroscopic approach, including electroresection, laser ablation, and fulguration. There has been an increase in use of adjuvant intracavitary therapy, predominantly using mitomycin and bacillus Calmette-Guerin (BCG), to reduce recurrence after primary endoscopic management for noninvasive tumors, although efficacy remains questionable. Intraluminal BCG has additionally been used for primary treatment of CIS in the upper tract, with around 50% success. Newer investigations include use of narrow band imaging or photodynamic diagnosis with ureteroscopy to improve visualization during diagnosis and treatment. Genomic characterization may improve selection for kidney-sparing surgery as well as identify actionable mutations for systemic therapy. The evolution in adjuvant management has seen strategies to increase the dwell time and the urothelial contact of intraluminal agents. Lastly, chemoablation using a hydrogel for sustained effect of mitomycin is under investigation with promising early results. Continued expansion of the armamentarium available and better identification and characterization of tumors ideal for organ-sparing treatment will further improve kidney preservation in UTUC.
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Affiliation(s)
- Meredith Metcalf
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Phillip M Pierorazio
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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16
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European Association of Urology Guidelines on Upper Urinary Tract Urothelial Carcinoma: 2020 Update. Eur Urol 2020; 79:62-79. [PMID: 32593530 DOI: 10.1016/j.eururo.2020.05.042] [Citation(s) in RCA: 480] [Impact Index Per Article: 120.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 05/28/2020] [Indexed: 12/12/2022]
Abstract
CONTEXT The European Association of Urology (EAU) Guidelines Panel on Upper Urinary Tract Urothelial Carcinoma (UTUC) has prepared updated guidelines to aid clinicians in the current evidence-based management of UTUC and to incorporate recommendations into clinical practice. OBJECTIVE To provide an overview of the EAU guidelines on UTUC as an aid to clinicians. EVIDENCE ACQUISITION The recommendations provided in the current guidelines are based on a thorough review of available UTUC guidelines and articles identified following a systematic search of Medline. Data on urothelial malignancies and UTUC were searched using the following keywords: urinary tract cancer, urothelial carcinomas, upper urinary tract carcinoma, renal pelvis, ureter, bladder cancer, chemotherapy, ureteroscopy, nephroureterectomy, neoplasm, adjuvant treatment, instillation, recurrence, risk factors, and survival. References were weighted by a panel of experts. EVIDENCE SYNTHESIS Owing to the rarity of UTUC, there are insufficient data to provide strong recommendations. The 2017 tumour, node, metastasis (TNM) classification is recommended. Recommendations are given for diagnosis and risk stratification as well as for radical and conservative treatment, and prognostic factors are discussed. A single postoperative dose of intravesical mitomycin after nephroureterectomy reduces the risk of bladder tumour recurrence. Kidney-sparing management should be offered as a primary treatment option to patients with low-risk tumour and two functional kidneys. After radical nephroureterectomy, cisplatin-based chemotherapy is indicated in locally advanced UTUC. CONCLUSIONS These guidelines contain information on the management of individual patients according to a current standardised approach. Urologists should take into account the specific clinical characteristics of each patient when determining the optimal treatment regimen, based on the proposed risk stratification of these tumours. PATIENT SUMMARY Urothelial carcinoma of the upper urinary tract is rare, but because 60% of these tumours are invasive at diagnosis, an appropriate diagnosis is most important. A number of known risk factors exist.
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17
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Brito J, Golijanin B, Kott O, Moshnikova A, Mueller-Leonhard C, Gershman B, Andreev OA, Reshetnyak YK, Amin A, Golijanin D. Ex-vivo Imaging of Upper Tract Urothelial Carcinoma Using Novel pH Low Insertion Peptide (Variant 3), a Molecular Imaging Probe. Urology 2020; 139:134-140. [DOI: 10.1016/j.urology.2019.01.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 01/08/2019] [Accepted: 01/11/2019] [Indexed: 12/18/2022]
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18
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Yoshida T, Setsuda S, Ishizuka M, Inoue T, Kinoshita H, Matsuda T. Photodynamic Diagnosis with Oral 5-Aminolevulinic Acid for Upper Urinary Tract Carcinoma: A Prospective Clinical Trial. J Endourol 2020; 34:509-515. [PMID: 31964177 DOI: 10.1089/end.2019.0725] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background and Purpose: In this study, we evaluated the effectiveness and safety of photodynamic diagnosis (PDD) of upper urinary tract carcinoma (UTUC) using oral 5-aminolevulinic acid (5-ALA). Materials and Methods: Consecutive adult patients with suspected UTUC based on imaging and urine cytology findings were prospectively enrolled from May 2018 to January 2019. 5-ALA (20 mg/kg) was orally administered 2 to 3 hours before diagnostic ureteroscopy (URS). Sixty-three biopsy samples were collected from 20 eligible patients using white light (WL) and PDD-URS. The primary endpoint was sensitivity, and the secondary endpoints were specificity, positive predictive value (PPV) and negative predictive value (NPV), diagnostic accuracy, and safety. Results: The sensitivity of photodynamic URS was significantly higher than that of WL-URS (93.8% vs 62.5%, p = 0.0025). Although the specificity and PPV were not different between the two procedures, PDD-URS showed a significantly higher NPV (92.3% vs 69.2%, p = 0.027) and accuracy (0.86 vs 0.75, p = 0.0297) than WL-URS. With respect to safety, no grade ≥3 adverse events related to 5-ALA administration occurred in any patients. Conclusion: We found that PDD-URS with oral 5-ALA is a safe and superior diagnostic tool for detection of UTUC compared with conventional WL-URS.
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Affiliation(s)
- Takashi Yoshida
- Department of Urology and Andrology, Kansai Medical University Hospital, Hirakata, Japan
| | | | | | - Takaaki Inoue
- Department of Urology and Andrology, Kansai Medical University Hospital, Hirakata, Japan
| | - Hidefumi Kinoshita
- Department of Urology and Andrology, Kansai Medical University Hospital, Hirakata, Japan
| | - Tadashi Matsuda
- Department of Urology and Andrology, Kansai Medical University Hospital, Hirakata, Japan
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19
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Loshchenov M, Seregin A, Kalyagina N, Dadashev E, Borodkin A, Babaev A, Loran O, Loschenov V. Fluorescence visualization of the borders of bladder tumors after TUR with quantitative determination of diagnostic contrast. TRANSLATIONAL BIOPHOTONICS 2020. [DOI: 10.1002/tbio.201900026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Affiliation(s)
- Maxim Loshchenov
- Prokhorov General Physics Institute of the Russian Academy of Sciences Moscow Russia
| | - Alexander Seregin
- S.P. Botkin City Clinical Hospital of the Department of Health of Moscow Moscow Russia
- Russian Medical Academy of Continuous Professional Education of the Ministry of Health of the Russian Federation Moscow Russia
| | - Nina Kalyagina
- Prokhorov General Physics Institute of the Russian Academy of Sciences Moscow Russia
- National Research Nuclear University MEPhI Moscow Russia
| | - Elmar Dadashev
- S.P. Botkin City Clinical Hospital of the Department of Health of Moscow Moscow Russia
| | - Alexander Borodkin
- Prokhorov General Physics Institute of the Russian Academy of Sciences Moscow Russia
| | - Akobirkhon Babaev
- Russian Medical Academy of Continuous Professional Education of the Ministry of Health of the Russian Federation Moscow Russia
| | - Oleg Loran
- Russian Medical Academy of Continuous Professional Education of the Ministry of Health of the Russian Federation Moscow Russia
| | - Victor Loschenov
- Prokhorov General Physics Institute of the Russian Academy of Sciences Moscow Russia
- National Research Nuclear University MEPhI Moscow Russia
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20
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Yamamichi G, Nakata W, Yoshimura A, Tsujimura G, Tsujimoto Y, Nin M, Mimura A, Miwa H, Tsujihata M. High performance of 5-aminolevulinic acid-induced fluorescent selective upper tract urinary cytology. Int J Urol 2020; 27:213-218. [PMID: 31916332 DOI: 10.1111/iju.14170] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 12/01/2019] [Indexed: 01/09/2023]
Abstract
OBJECTIVES To investigate the efficacy of selective upper tract urinary cytology using extracorporeal 5-aminolevulinic acid for the diagnosis of upper urinary tract urothelial carcinoma. METHODS We evaluated 104 patients who underwent radical nephroureterectomy and were diagnosed pathologically as having upper urinary tract urothelial carcinoma between March 2013 and May 2019 in Osaka Rosai Hospital. Preoperatively, we collected upper tract urinary cytology from both sides, and compared the sensitivity and specificity between conventional urine cytology and 5-aminolevulinic acid-induced fluorescent urine cytology. RESULTS The sensitivity of 5-aminolevulinic acid-induced fluorescent selective upper tract urinary cytology was significantly higher than conventional cytology (90.4% vs 66.3%, P < 0.001), whereas the specificity was equally high (100% vs 98.2%, P = 1.0). In more detailed analysis, the sensitivity of 5-aminolevulinic acid-induced fluorescent selective upper tract urinary cytology was significantly higher than that of conventional cytology unrelated to patients' age (<76 years: 90.2% vs 68.6%, P = 0.013; ≥76 years: 90.6% vs 64.2%, P = 0.021), sex (male: 89.2% vs 67.5%, P = 0.001; female: 95.2% vs 61.9%, P = 0.02) or pT stage (pT1 or less: 91.4% vs 69.0%, P = 0.005; pT2 or more: 89.1% vs 63.0%, P = 0.006), tumor grade (high grade: 91.0% vs 70.5%, P = 0.002; low grade: 88.5% vs 53.8%, P = 0.013), and tended to be more efficacious for tumors that could not be detected by imaging techniques (83.3% vs 50.0%, P = 0.075). CONCLUSIONS 5-Aminolevulinic acid-induced fluorescent selective upper tract urinary cytology is more sensitive than conventional cytology for the diagnosis of upper urinary tract urothelial carcinoma, regardless of pT stage and tumor grade.
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Affiliation(s)
- Gaku Yamamichi
- Department of Urology, Osaka Rosai Hospital, Sakai, Osaka, Japan
| | - Wataru Nakata
- Department of Urology, Osaka Rosai Hospital, Sakai, Osaka, Japan
| | | | - Go Tsujimura
- Department of Urology, Osaka Rosai Hospital, Sakai, Osaka, Japan
| | - Yuichi Tsujimoto
- Department of Urology, Osaka Rosai Hospital, Sakai, Osaka, Japan
| | - Mikio Nin
- Department of Urology, Osaka Rosai Hospital, Sakai, Osaka, Japan
| | - Akihiro Mimura
- Department of Laboratory Medicine, Osaka Rosai Hospital, Sakai, Osaka, Japan
| | - Hideaki Miwa
- Department of Diagnostic Pathology, Osaka Rosai Hospital, Sakai, Osaka, Japan
| | - Masao Tsujihata
- Department of Urology, Osaka Rosai Hospital, Sakai, Osaka, Japan
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21
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Taylor J, Meng X, Ghandour R, Margulis V. Advancements in the clinical management of upper tract urothelial carcinoma. Expert Rev Anticancer Ther 2019; 19:1051-1060. [PMID: 31770492 DOI: 10.1080/14737140.2019.1698295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Introduction: Upper tract urothelial carcinoma (UTUC) remains a complex disease to manage given challenges in staging, surgical resection, use of perioperative therapy, and prevention of bladder recurrences. High-level evidence is limited to guide management; however, recent data have shifted treatment paradigms. We intend to review recent evidence on advancements in the clinical management for UTUC.Areas covered: This review summarizes advancements in pre-operative work-up, surgical technique, and the use of intravesical and systemic therapy in both the neoadjuvant and adjuvant settings. Special comment is made on progress in the genomics of UTUC and how that can inform clinical practice.Expert opinion: Advancements in the clinical management of UTUC are most prominently being made in the neoadjuvant chemotherapy setting. Although level I evidence is sparse, data from both single and multi-institutional retrospective studies strongly encourage the use of neoadjuvant chemotherapy especially in high-risk or advanced-stage patients.
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Affiliation(s)
- Jacob Taylor
- Department of Urology, NYU Langone Health, New York, NY, USA
| | - Xiaosong Meng
- Department of Urology, UT Southwestern Medical Center, Dallas, TX, USA
| | - Rashed Ghandour
- Department of Urology, UT Southwestern Medical Center, Dallas, TX, USA
| | - Vitaly Margulis
- Department of Urology, UT Southwestern Medical Center, Dallas, TX, USA.,Institute for Urology and Reproductive Health, Sechenov University, Moscow, Russia
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22
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Georges JF, Valeri A, Wang H, Brooking A, Kakareka M, Cho SS, Al-Atrache Z, Bamimore M, Osman H, Ifrach J, Yu S, Li C, Appelt D, Lee JYK, Nakaji P, Brill K, Yocom S. Delta-Aminolevulinic Acid-Mediated Photodiagnoses in Surgical Oncology: A Historical Review of Clinical Trials. Front Surg 2019; 6:45. [PMID: 31555659 PMCID: PMC6737001 DOI: 10.3389/fsurg.2019.00045] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 07/17/2019] [Indexed: 12/11/2022] Open
Abstract
Fluorescence imaging is an emerging clinical technique for real-time intraoperative visualization of tumors and their boundaries. Though multiple fluorescent contrast agents are available in the basic sciences, few fluorescence agents are available for clinical use. Of the clinical fluorophores, delta aminolevulinic acid (5ALA) is unique for generating visible wavelength tumor-specific fluorescence. In 2017, 5ALA was FDA-approved for glioma surgery in the United States. Additionally, clinical studies suggest this agent may have utility in surgical subspecialties outside of neurosurgery. Data from dermatology, OB/GYN, urology, cardiothoracic surgery, and gastrointestinal surgery show 5ALA is helpful for intraoperative visualization of malignant tissues in multiple organ systems. This review summarizes data from English-language 5ALA clinical trials across surgical subspecialties. Imaging systems, routes of administration, dosing, efficacy, and related side effects are reviewed. We found that modified surgical microscopes and endoscopes are the preferred imaging devices. Systemic dosing across surgical specialties range between 5 and 30 mg/kg bodyweight. Multiple studies discussed potential for skin irritation with sun exposure, however this side effect is infrequently reported. Overall, 5ALA has shown high sensitivity for labeling malignant tissues and providing a means to visualize malignant tissue not apparent with standard operative light sources.
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Affiliation(s)
- Joseph F Georges
- Department of Neurosurgery, Philadelphia College of Osteopathic Medicine, Philadelphia, PA, United States.,Department of Neurosurgery, Cooper University Healthcare, Philadelphia, PA, United States
| | - Amber Valeri
- Department of Neurosurgery, Philadelphia College of Osteopathic Medicine, Philadelphia, PA, United States.,Department of Neurosurgery, Cooper University Healthcare, Philadelphia, PA, United States
| | - Huan Wang
- School of Medicine, Cooper Medical School of Rowan University, Camden, NJ, United States
| | - Aaron Brooking
- Department of Neurosurgery, Philadelphia College of Osteopathic Medicine, Philadelphia, PA, United States.,Department of Neurosurgery, Cooper University Healthcare, Philadelphia, PA, United States
| | - Michael Kakareka
- Department of Neurosurgery, Philadelphia College of Osteopathic Medicine, Philadelphia, PA, United States.,Department of Neurosurgery, Cooper University Healthcare, Philadelphia, PA, United States
| | - Steve S Cho
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States.,Department of Neurosurgery, Hospital of the University of Pennsylvania, Philadelphia, PA, United States
| | - Zein Al-Atrache
- School of Medicine, Philadelphia College of Osteopathic Medicine, Philadelphia, PA, United States
| | - Michael Bamimore
- School of Medicine, Philadelphia College of Osteopathic Medicine, Philadelphia, PA, United States
| | - Hany Osman
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, United States
| | - Joseph Ifrach
- School of Medicine, Philadelphia College of Osteopathic Medicine, Philadelphia, PA, United States
| | - Si Yu
- School of Medicine, Cooper Medical School of Rowan University, Camden, NJ, United States
| | - Carrie Li
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Denah Appelt
- Department of Neurosurgery, Philadelphia College of Osteopathic Medicine, Philadelphia, PA, United States
| | - John Y K Lee
- Department of Neurosurgery, Hospital of the University of Pennsylvania, Philadelphia, PA, United States
| | - Peter Nakaji
- Department of Neurosurgery, St. Joseph's Hospital and Medical Center, Barrow Neurological Institute, Phoenix, AZ, United States
| | - Kristin Brill
- Department of Surgery, MD Anderson Cancer Center at Cooper Health Systems, Camden, NJ, United States
| | - Steven Yocom
- Department of Neurosurgery, Cooper University Healthcare, Philadelphia, PA, United States
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23
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Which flexible ureteroscope is the best for upper tract urothelial carcinoma treatment? World J Urol 2019; 37:2325-2333. [PMID: 30770944 DOI: 10.1007/s00345-019-02675-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 02/05/2019] [Indexed: 02/07/2023] Open
Abstract
PURPOSE To present attributes of currently available flexible ureteroscopes to define the best flexible ureteroscope for upper tract urothelial carcinoma (UTUC) treatment. MATERIALS AND METHODS Scopus and Medline databases were searched for articles relating to performance of flexible ureteroscopes. A consensus for final inclusion of articles judged to be relevant for UTUC treatment was reached between the authors. Instrument characteristics were extracted from manufacturers' product brochures. RESULTS Smaller cross-sectional size of instruments is associated with increased probability for successful primary access to the upper urinary tract. The smallest flexible ureteroscopes are fiberoptic scopes. Smaller ureteroscopes also allow comparatively increased irrigation flow at constant intrarenal pressure. Digital flexible ureteroscopes achieve superior image quality compared to their fiberoptic counterparts, at the price of lower end-deflection ability. Image enhancement technologies such as narrow-band imaging (NBI), photodynamic diagnosis (PDD) and Image 1-S (formerly SPIES) are based on subjective image interpretation by the operator. NBI and PDD significantly increase tumor detection rate. The highest subjective image quality score of the Image 1-S technology is reached by the "Clara + Chroma" mode. Single-use ureteroscopes offer potential advantages over reusable scopes, including sterility, absence of contamination, immediate availability and exemption of previous instrument wear. CONCLUSIONS Miniaturization, digital image caption and image enhancement technologies seem to be the major determinants defining the best flexible ureteroscope for UTUC treatment. The impact of further factors, such as distal tip design, torque, working channel position, risk of contamination, as well as upcoming technological innovations should be evaluated in randomized controlled trials.
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24
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Novel real-time optical imaging modalities for the detection of neoplastic lesions in urology: a systematic review. Surg Endosc 2018; 33:1349-1367. [PMID: 30421080 PMCID: PMC6484817 DOI: 10.1007/s00464-018-6578-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 11/02/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND Current optical diagnostic techniques for malignancies are limited in their diagnostic accuracy and lack the ability to further characterise disease, leading to the rapidly increasing development of novel imaging methods within urology. This systematic review critically appraises the literature for novel imagining modalities, in the detection and staging of urological cancer and assesses their effectiveness via their utility and accuracy. METHODS A systematic literature search utilising MEDLINE, EMBASE and Cochrane Library Database was conducted from 1970 to September 2018 by two independent reviewers. Studies were included if they assessed real-time imaging modalities not already approved in guidelines, in vivo and in humans. Outcome measures included diagnostic accuracy and utility parameters, including feasibility and cost. RESULTS Of 5475 articles identified from screening, a final 46 were included. Imaging modalities for bladder cancer included optical coherence tomography (OCT), confocal laser endomicroscopy, autofluorescence and spectroscopic techniques. OCT was the most widely investigated, with 12 studies demonstrating improvements in overall diagnostic accuracy (sensitivity 74.5-100% and specificity 60-98.5%). Upper urinary tract malignancy diagnosis was assessed using photodynamic diagnosis (PDD), narrow band imaging, optical coherence tomography and confocal laser endomicroscopy. Only PDD demonstrated consistent improvements in overall diagnostic accuracy in five trials (sensitivity 94-96% and specificity 96.6-100%). Limited evidence for optical coherence tomography in percutaneous renal biopsy was identified, with anecdotal evidence for any modality in penile cancer. CONCLUSIONS Evidence supporting the efficacy for identified novel imaging modalities remains limited at present. However, OCT for bladder cancer and PDD in upper tract malignancy demonstrate the best potential for improvement in overall diagnostic accuracy. OCT may additionally aid intraoperative decision making via real-time staging of disease. Both modalities require ongoing investigation through larger, well-conducted clinical trials to assess their diagnostic accuracy, use as an intraoperative staging aid and how to best utilise them within clinical practice.
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25
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Knoedler JJ, Raman JD. Advances in the management of upper tract urothelial carcinoma: improved endoscopic management through better diagnostics. Ther Adv Urol 2018; 10:421-429. [PMID: 30574202 DOI: 10.1177/1756287218805334] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 08/09/2018] [Indexed: 12/12/2022] Open
Abstract
As a rare disease, the management of upper tract urothelial carcinoma (UTUC) continues to evolve. While radical nephroureterectomy remains the gold standard, there is a growing desire to pursue nephron-sparing approaches through endoscopic management, particularly for low-risk disease or in the setting of imperative indications. A particular challenge for those undertaking endoscopic management is appropriate grading and staging of tumors, and thereby appropriate patient selection. In this review we will cover the current state of diagnostics for UTUC as well as highlight the challenges in accurate diagnosis. Additionally, we will focus on emerging technologies to aid in optimizing diagnostic accuracy in UTUC. This will include discussion of narrow band imaging, photodynamic diagnosis, optical coherence tomography, and confocal laser endomicroscopy.
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Affiliation(s)
- John J Knoedler
- Milton S. Hershey Medical Center, 500 University Dr., c4830, Hershey, PA 17033, USA
| | - Jay D Raman
- Milton S. Hershey Medical Center, Hershey, PA, USA
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Abstract
PURPOSE OF REVIEW Endoscopy coupled with targeted resections represents a cornerstone in the diagnosis, staging, and treatment of patients with bladder cancer. Direct visualization can be challenging and imprecise due to patient-, tumor-, and surgeon-specific factors. We will review contemporary endoscopic technologies and techniques used to improve our ability to safely identify and resect malignant lesions in patients with bladder cancer. RECENT FINDINGS Enhanced endoscopic imaging technology may improve detection rates for bladder cancer throughout the upper and lower urinary tract, which may lead to improvements in recurrence and progression rates for non-muscle invasive bladder cancer (NMIBC). New techniques including narrow-band imaging (NBI), photodynamic diagnosis (PDD), Storz Professional Image Enhancement System (SPIES), optical coherence tomography (OCT), and others have shown benefit and may further improve our ability to detect and stage bladder tumors. Enhanced endoscopy technologies have already demonstrated value in improving the sensitivity of bladder cancer detection and early results suggest they may improve short- and long-term oncologic outcomes.
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Photodynamic diagnosis in upper urinary tract urothelial carcinoma: A systematic review. Arab J Urol 2017; 15:100-109. [PMID: 29071138 PMCID: PMC5653608 DOI: 10.1016/j.aju.2017.01.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 12/08/2016] [Accepted: 01/23/2017] [Indexed: 11/26/2022] Open
Abstract
Objective To assess the diagnostic accuracy and safety of photodynamic diagnosis (PDD) in upper urinary tract urothelial carcinoma (UUTUC). Materials and methods A systematic literature search was conducted. Included studies were assessed for the risks of bias and quality using appropriate tools. Dedicated data extraction forms were used. Diagnostic accuracy in terms of sensitivity and specificity were quoted whenever provided by individual studies. A combined toxicity profile of 5-aminolevulinic acid (5ALA) was given after reviewing individual studies. Results In all, 17 studies were identified. After screening seven studies were included involving a total of 194 patients. None of the studies were randomised. All the available studies were of low-to-moderate quality. The largest available study, with 106 patients, reported a sensitivity of 95.8% and 53.5% for PDD and white-light (WL) ureterorenoscopy (URS) respectively, with a statistically significant difference. The specificity was 96.6% for PDD and 95.2% for WL-URS with no statistical significance. PDD showed better ability in detecting carcinoma in situ and dysplasia. One study compared PDD to computed tomography urogram (CTU) and found PDD to have better sensitivity and statistically significantly better specificity. 5ALA-associated toxicity was minor in nature and hypotension was the most common adverse event. Conclusion PDD in UUTUC appears to be more accurate than WL-URS and CTU, with no significant toxicity. Larger scale randomised trials are needed.
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Key Words
- (UUT)UC, (upper urinary tract) urothelial carcinoma
- 5-Aminolaevulinic
- 5ALA, 5-aminolevulinic acid
- Blue light detection
- CIS, carcinoma in situ
- CTU, CT urogram
- HAL, hexaminolaevulinate
- HNPCC, non-polyposis colorectal carcinoma
- NBI, narrow-band imaging
- PDD, photodynamic diagnosis
- PPIX, protoporphyrin IX
- PRISMA, Preferred Reporting Items for Systematic Reviews and Meta-Analyses
- Photodynamic diagnosis
- Photodynamic ureteroscopy
- QUADAS, Quality Assessment of Diagnostic Accuracy Studies
- URS, ureterorenoscopy
- Upper tract TCC
- WL, white-light
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Soria F, Shariat SF, Lerner SP, Fritsche HM, Rink M, Kassouf W, Spiess PE, Lotan Y, Ye D, Fernández MI, Kikuchi E, Chade DC, Babjuk M, Grollman AP, Thalmann GN. Epidemiology, diagnosis, preoperative evaluation and prognostic assessment of upper-tract urothelial carcinoma (UTUC). World J Urol 2017; 35:379-387. [PMID: 27604375 DOI: 10.1007/s00345-016-1928-x] [Citation(s) in RCA: 233] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 08/27/2016] [Indexed: 12/28/2022] Open
Abstract
PURPOSE Upper-tract urothelial carcinoma (UTUC) is a relatively uncommon disease with limited available evidence on specific topics. The purpose of this article was to review the previous literature to summarize the current knowledge about UTUC epidemiology, diagnosis, preoperative evaluation and prognostic assessment. METHODS Using MEDLINE, a non-systematic review was performed including articles between January 2000 and February 2016. English language original articles, reviews and editorials were selected based on their clinical relevance. RESULTS UTUC accounts for 5-10 % of all urothelial cancers, with an increasing incidence. UTUC and bladder cancer share some common risk factors, even if they are two different entities regarding practical, biological and clinical characteristics. Aristolochic acid plays an important role in UTUC pathogenesis in certain regions. It is further estimated that approximately 10 % of UTUC are part of the hereditary non-polyposis colorectal cancer spectrum disease. UTUC diagnosis remains mainly based on imaging and endoscopy, but development of new technologies is rapidly changing the diagnosis algorithm. To help the decision-making process regarding surgical treatment, extent of lymphadenectomy and selection of neoadjuvant systemic therapies, predictive tools based on preoperative patient and tumor characteristics have been developed. CONCLUSIONS Awareness regarding epidemiology, diagnosis, preoperative evaluation and prognostic assessment changes is essential to correctly diagnose and manage UTUC patients, thereby potentially improving their outcomes.
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Affiliation(s)
- Francesco Soria
- Department of Urology, Medical University of Vienna, Vienna, Austria
- Division of Urology, Department of Surgical Sciences, San Giovanni Battista Hospital, University of Studies of Torino, Turin, Italy
| | - Shahrokh F Shariat
- Department of Urology, Medical University of Vienna, Vienna, Austria
- Karl Landsteiner Institute of Urology and Andrology, Vienna, Austria
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Urology, Weill Cornell Medical College, New York, NY, USA
| | - Seth P Lerner
- Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - Hans-Martin Fritsche
- Department of Urology, Caritas St. Josef Medical Centre, University of Regensburg, Regensburg, Germany
| | - Michael Rink
- Department of Urology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Wassim Kassouf
- Department of Surgery (Urology), McGill University, Montreal, QC, Canada
| | - Philippe E Spiess
- Department of Genitourinary Oncology, Moffitt Cancer Center, Tampa, FL, USA
| | - Yair Lotan
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Dingwei Ye
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China
| | | | - Eiji Kikuchi
- Department of Urology, Keio University School of Medicine, Tokyo, Japan
| | - Daher C Chade
- Urology Department, University of Sao Paulo Medical School and Institute of Cancer, São Paulo, Brazil
| | - Marko Babjuk
- Department of Urology, Faculty Hospital Motol, Second Faculty of Medicine, Charles University in Praha, Prague, Czech Republic
| | - Arthur P Grollman
- Department of Pharmacological Sciences and Department of Medicine, Stony Brook University, Stony Brook, NY, USA
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Abstract
Upper tract urothelial carcinoma (UTUC) is a rare condition and recommendations based on a high level of evidence for diagnosis, treatment and follow-up monitoring are lacking. Current decision-making is often based on evidence from trials investigating urothelial carcinoma of the lower tract. Radical nephroureterectomy has been the standard of care for UTUC but kidney-sparing treatment using endoscopic approaches has been established for a select patient group with low-grade and low-stage disease. Optimal treatment choice requires correct tumour characterization. According to available recommendations, diagnostic work-up of UTUC includes evaluation by CT urography or MRI urography, cystoscopy and urine cytology. Ureterorenoscopy and lesion biopsy are grade C recommendations in patients with suspected UTUC. When kidney-sparing treatment is planned, ureterorenoscopy and biopsy should be considered and are the procedures of choice in most cases. These diagnostics have limitations and their accuracy varies in defining tumour characteristics and predicting grade and stage. Urinary tests have higher sensitivity than cytology for detection of lower tract urothelial carcinoma but evidence of their benefit in UTUCs is lacking. New optical and image enhancement techniques are being developed to facilitate real-time diagnostics with increased accuracy. A new diagnostic algorithm for patients with suspected UTUC that integrates the diagnosis, treatment and clinical risk stratification is required.
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Kata SG, Zreik A, Ahmad S, Chłosta P, Aboumarzouk O. Concurrent bladder cancer in patients undergoing photodynamic diagnostic ureterorenoscopy: how many lesions do we miss under white light cystoscopy? Cent European J Urol 2016; 69:334-340. [PMID: 28127447 PMCID: PMC5260463 DOI: 10.5173/ceju.2016.896] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Revised: 10/03/2016] [Accepted: 10/27/2016] [Indexed: 12/27/2022] Open
Abstract
INTRODUCTION There is an ongoing debate on panurothelial changes in the upper and lower urinary tract as multifocal presentation of urothelial cancer is well recognised. Concurrent bladder cancer impacts the outcome of the upper urinary tract urothelial cancer treatment, while its detection still relies on the white light cystoscopy. MATERIAL AND METHODS We retrospectively reviewed all patients who underwent photodynamic diagnostic ureterorenoscopy, choosing those who had synchronous bladder biopsies. Each patient received 20 mg/kg body weight of oral 5-Aminolevulinic acid around 3-4 hours before endoscopy. All procedures were performed by a single endourologist experienced in photodynamic diagnosis and flexible ureterorenoscopy. RESULTS Between July 2009 and June 2013, 69 patients underwent bladder biopsies at the time of photodynamic diagnostic endoscopic inspection of the upper urinary tract. In total, 43.5% (30/69) patients were found to have bladder lesions, of which 43.3% (13/30) were proven to be carcinoma in situ. White light inspection of the bladder missed bladder cancer in 16 (23.1%) patients, of which 12 were carcinoma in situ. There were 14 bladder cancer lesions missed under white light which were concomitant to the upper urinary tract urothelial cancer. Twelve (17.4%) patients developed minor complications relevant to the photosensitizer. CONCLUSIONS The study raises a concern about missing small bladder cancer/carcinoma in situ lesions on the initial diagnosis or in surveillance of the upper urinary tract urothelial cancer. Higher than previously reported, the rate of concomitant bladder cancer may suggest utilisation of photodynamic diagnosis to ensure the cancer free status of the bladder, but this needs to be ratified in a multi-institutional randomised trial.
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Affiliation(s)
- Sławomir G Kata
- Department of Urology, Ninewells Hospital and Medical School, Dundee, United Kingdom
| | | | - Sarfraz Ahmad
- Department of Urology, Aberdeen Royal Infirmary, Aberdeen, United Kingdom
| | - Piotr Chłosta
- Academic Urological Unit, Collegium Medicum, Jagielloński University, Cracow, Poland
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Kata SG, Aboumarzouk O. Are we closer to seeing carcinoma in situ in the upper urinary tract? Cent European J Urol 2016; 69:157-61. [PMID: 27551552 PMCID: PMC4986306 DOI: 10.5173/ceju.2016.801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 03/21/2016] [Accepted: 04/09/2016] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION There is observed increase in detection rate of upper urinary tract urothelial cancer worldwide. This is a result of improved imaging as well as implementation of novel technologies of direct visualization of upper urinary tract. Standard techniques still remain insufficient to diagnose flat urothelial lesions. Carcinoma in situ is characterized by flat disordered proliferation of urothelial cells with marked cytologic abnormality, which occur within one cell layer as well as full thickness urothelium and therefore requires a better technology to pick up early and subtle mucosal changes. MATERIAL AND METHODS The review presents available diagnostic tools in detection of upper urinary tract urothelial cancer and their ability to depict carcinoma in situ. RESULTS Ureterorenoscopy is an investigation of choice as various promising techniques are under pilot investigations to enhance visualization of upper urinary tract carcinoma in situ. So far only photodynamic diagnosis has been reported to be as effective in detection of carcinoma in situ in the upper as within the lower urinary tract. CONCLUSIONS Although we are close to see upper urinary tract carcinoma in situ all new promising diagnostic techniques still require further validation in multicenter clinical trials to indicate any change to current recommendations.
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Affiliation(s)
- Sławomir G Kata
- Department of Urology, Ninewells Hospital and Medical School, Dundee, United Kingdom
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Fluorescence guided resection (FGR): A primer for oncology. Photodiagnosis Photodyn Ther 2016; 13:73-80. [DOI: 10.1016/j.pdpdt.2015.11.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 11/25/2015] [Accepted: 11/26/2015] [Indexed: 01/27/2023]
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