Comparison between intravesical and oral administration of 5‐aminolevulinic acid in the clinical benefit of photodynamic diagnosis for nonmuscle invasive bladder cancer

This multicenter study is likely to be biased, because it is limited by the retrospective analysis. This study suggests that regardless of the ALA administration route, ALA-PDD and PDD-TURBT are remarkably helpful in detection and intraoperative navigation programs.