Safety, Feasibility, and Oncological Outcomes of En-Bloc Transurethral Resection of Bladder Tumor Using Superpulse Thulium Fiber Laser-Initial Series

1. Abstract
1.1. Objective: To assess the safety and efficacy of Thulium fiber laser En bloc transurethral resection of bladder tumors.
1.2. Methods: We performed a retrospective analysis of Thulium fiber laser (TFL) En-bloc TURBT (Transurethral resection of bladder tumor) done by a single surgeon at our institute from September 2020 till March 2022. All cases were newly diagnosed superficial bladder tumors < 5 cm in size. En-bloc TURBT was done using 550 μ laser fibers at 1.5 J and 20 Hz. In all cases tumor size and site, laser on time, intraoperative visibility, degree of laser vibration and any complications like obturator nerve reflex, bladder perforation and bleeding were recorded. Tumor stage, grade and presence of detrusor muscle was noted in each case. Average follow up was 18 months.