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Introduction: Although there is evidence that hexaminolevulinate (HAL)-based transurethral bladder tumor resection (TURBT) improves the detection of Ta-T1 non-muscle-invasive bladder cancer (NMIBC) as well as carcinoma in situ there is uncertainty about its beneficial effects on progression. Material and Methods: A systematic literature search was conducted according to the PRISMA statement to identify studies reporting on HAL- vs. white-light (WL-) based TUR-BT in non-muscle invasive bladder cancer between 2000 and 2016. A two-stage selection process was utilized to determine eligible studies. Of a total of 294 studies, 5 (4 randomized and one retrospective) were considered for final analysis. The primary objective was the rate of progression. Results: The median follow-up for patients treated with HAL- and WL-TURBT was 27.6 (1-55.1) and 28.9 (1-53) months, respectively. Of a total of 1301 patients, 644 underwent HAL- and 657 WL-based TURBT. Progression was reported in 44 of 644 patients (6.8%) with HAL- and 70 of 657 patients (10.7%) with WL-TURBT, respectively (median odds ratio: 1.64, 1.10-2.45 for HAL vs. WL; p  = 0.01). Data on progression-free survival was reported in a single study with a trend towards improved survival for patients treated with HAL-TURBT ( p  = 0.05). Conclusions: In this meta-analysis the rate of progression was significantly lower in patients treated with HAL- vs. WL-based TURBT. These results support the initiation of randomized trials on HAL with progression as primary endpoint.

bladder cancer

Systematic Review and Meta-Analysis on the Impact of Hexaminolevulinate- Versus White-Light Guided Transurethral Bladder Tumor Resection on Progression in Non-Muscle Invasive Bladder Cancer