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

Photodiagnosis and photodynamic therapy(2024)

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