scholarly journals Comparison between 5-aminolevulinic acid photodynamic diagnosis and narrow-band imaging for bladder cancer detection

BMC Urology ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Hiroki Hagimoto ◽  
Noriyuki Makita ◽  
Yuta Mine ◽  
Hidetoshi Kokubun ◽  
Shiori Murata ◽  
...  

Abstract Background To compare 5-aminolevulinic acid (5-ALA)-mediated photodynamic diagnosis (PDD) with narrow-band imaging (NBI) for cancer detection during transurethral resection of bladder tumour (TURBT). Methods Between June 2018 and October 2020, 114 patients and 282 lesions were included in the analysis. Patients were orally administered 5-ALA (20 mg/kg) 2 h before TURBT. The bladder was inspected with white light (WL), PDD, and NBI for each patient, and all areas positive by at least one method were resected or biopsied. The imaging data were then compared to the pathology results. Results The sensitivities of WL, PDD, and NBI for detecting urothelial carcinoma were 88.1%, 89.6%, and 76.2%, respectively. The specificity, positive predictive value, and negative predictive value for detecting urothelial carcinoma were 47.5%, 80.9%, and 61.3%, respectively, for WL; 22.5%, 74.5%, and 46.2%, respectively, for PDD; and 46.3%, 78.2%, and 43.5%, respectively, for NBI. PDD was significantly more sensitive than NBI for all lesions (p < 0.001) and carcinoma in situ (CIS) lesions (94.6% vs. 54.1%, p < 0.001). Conclusions PDD can increase the detection rate of bladder cancer, compared to NBI, by greater than 10%. Therefore, 100% of CIS lesions can be detected by adding PDD to WL.

2021 ◽  
Author(s):  
Hiroki Hagimoto ◽  
Noriyuki Makita ◽  
Yuta Mine ◽  
Hidetoshi Kokubun ◽  
Shiori Murata ◽  
...  

Abstract BackgroundNo comparative studies exist between 5-aminolevulinic acid-photodynamic diagnosis (PDD) and narrow-band imaging (NBI) for the detection of urothelial carcinoma. Therefore, we compared 5-aminolevulinic acid-mediated PDD with NBI for cancer detection during transurethral resection of bladder tumors.MethodsBetween June 2018 and October 2020, 114 patients and 282 lesions were included in the analysis. Patients were orally administered 5-aminolevulinic acid (20 mg/kg) 2 h before transurethral resection of bladder tumors. The bladder was inspected with white light, PDD, and NBI for each patient and all areas that were positive by at least one method were resected or biopsied. The imaging data were then compared to the pathology results.ResultsThe sensitivity, specificity, positive predictive value, and negative predictive value for detecting urothelial carcinoma were 88.1%, 47.5%, 80.9%, and 61.3% for white light; 89.6%, 22.5%, 74.5%, and 46.2% for PDD; and 76.2%, 46.3%, 78.2%, and 43.5% for NBI, respectively. PPD was significantly more sensitive than NBI for all lesions (p<0.001), including carcinoma in situ lesions (94.6% vs. 54.1%, p<0.001).ConclusionsPDD can increase the detection rate of bladder cancer compared to NBI by greater than 10%. Adding PDD to white light can detect 100% of carcinoma in situ lesions.


2011 ◽  
Vol 11 ◽  
pp. 2550-2558 ◽  
Author(s):  
Prashant Patel ◽  
Richard T. Bryan ◽  
D. Michael A. Wallace

This review provides an overview of emerging techniques, namely, photodynamic diagnosis (PDD), narrow band imaging (NBI), Raman spectroscopy, optical coherence tomography, virtual cystoscopy, and endoscopic microscopy for its use in the diagnosis and surveillance of bladder cancer. The technology, clinical evidence and future applications of these approaches are discussed with particular emphasis on PDD and NBI. These approaches show promise to optimise cystoscopy and transurethral resection of bladder tumours.


Cancers ◽  
2021 ◽  
Vol 13 (17) ◽  
pp. 4378
Author(s):  
Giorgio I. Russo ◽  
Tamir N. Sholklapper ◽  
Andrea Cocci ◽  
Giuseppe Broggi ◽  
Rosario Caltabiano ◽  
...  

Despite early detection and regular surveillance of non-muscle invasive bladder cancer (NMIBC), recurrence and progression rates remain exceedingly high for this highly prevalent malignancy. Limited visualization of malignant lesions with standard cystoscopy and associated false-negative biopsy rates have been the driving force for investigating alternative and adjunctive technologies for improved cystoscopy. The aim of our systematic review and meta-analysis was to compare the sensitivity, specificity, and oncologic outcomes of photodynamic diagnosis (PDD) fluorescence, narrow band imaging (NBI), and conventional white light cystoscopy (WLC) in detecting NMIBC. Out of 1,087 studies reviewed, 17 prospective non-randomized and randomized controlled trials met inclusion criteria for the study. We demonstrated that tumor resection with either PDD and NBI exhibited lower recurrence rates and greater diagnostic sensitivity compared to WLC alone. NBI demonstrated superior disease sensitivity and specificity as compared to WLC and an overall greater hierarchical summary receiver operative characteristic. Our findings are consistent with emerging guidelines and underscore the value of integrating these enhanced technologies as a part of the standard care for patients with suspected or confirmed NMIBC.


2017 ◽  
Vol 89 (3) ◽  
pp. 232 ◽  
Author(s):  
Roberto Giulianelli ◽  
Barbara Cristina Gentile ◽  
Luca Albanesi ◽  
Paola Tariciotti ◽  
Gabriella Mirabile

Objective: The aim of this study was to compare, in order to increase our ability to detect bladder cancer, the predictive power of narrow band imaging (NBI) versus white light cystoscopy (WL). The secondary objective was to evaluate how the preoperative use of NBI cystoscopy can increase the ability to detect bladder lesions in terms of status, multi-focality and dimensions. Materials and methods: Between June 2010 and April 2012, 797 consecutive patients, 423 male and 374 female, affected by suspected bladder cancer lesions, underwent to WL plus NBI cystoscopy and subsequently to WL Bipolar Gyrus PK (Olympus, Tokyo, Japan) transurethral resection of bladder tumour (WL-TURBT). The average follow-up was 24 (16-38) months. Mean age was 67.7 yrs. (range 46-88). All the patients underwent by same surgeon to WL resection (WL-TURBT) of the previously identified lesions by same surgeon. All the removed tissue was sent separately for histological evaluation after mapping the areas of resection on a topographic sheet. Results: In our study we considered 797 patients that matched our inclusion criteria. Through the use of WL cystoscopy, we identified 603 patients (75.53%) with suspicious lesions, instead, with the use of light NBI, we found 786 patients with suspicious lesions (98.49%).The use of NBI cystoscopy increases by approximately 30% the specific ability to detect lesions not otherwise visible with WL cystoscopy (OR 21.9 and RR 1.30), in particular for patients with lesions size < 3 cm (OR 24.00; RR 1.40), unifocal (OR: 22.28; RR 1.47) and recurrent (OR 58.4; RR 1.34). Pathology demonstrated the presence of cancer in 512 (64.2%) patients, of whom 412 (51.8%) were visible both with WL cystoscopy and NBI cystoscopy. In our experience, only 11 (1.38%) lesions were only positive at WL cystoscopy (negative at NBI cystoscopy) thus 501 (62.8%, OR 10.13; RR 1.21) patients showed bladder oncological lesions positive at NBI cystoscopy. In these patients, the use the NBI Cystoscopy has better highlighted a recurrence (p < 0.005; OR 22.8, RR 1.23; 95% CI-1.13 to 0.24) or a lesion < 3 cm (p < 0.05; OR 11.4 , RR 1.30; 95% CI-0.18 to 0.29) or a unifocal lesion (p < 0.005; OR 10.38, RR 1.34, CI 0.18 to 0.30). Conclusions: The use of NBI cystoscopy, significantly increases by approximately 30% our predictive power to identify neoplastic lesions, especially unifocal or < 3 cm or recurrent lesions. Following WLTURBT, stage, dimension and focaliity are statistically significant determinants (p < 0.001) of the bladder oncological lesions detected by NBI cystoscopy rather than by WL cystoscopy.


2017 ◽  
Vol 35 (9) ◽  
pp. 459-464 ◽  
Author(s):  
Piotr Kutwin ◽  
Tomasz Konecki ◽  
Marcin Cichocki ◽  
Piotr Falkowski ◽  
Zbigniew Jabłonowski

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