Abstract:Objective To investigate the efficacy of narrow-band imaging (NBI) flexible cystoscopy combined with holmium laser in the treatment of patients with non-muscle invasive bladder cancer (NMIBC). Methods A total of 60 patients with NMIBC admitted into our hospital from June 2017 to June 2018 were enrolled, and were divided into NBI group (30 cases) and white light imaging (WLI) group (30 cases). The surgery-related indicators, perioperative complications, recurrence rates at 1 month, 3 months, 6 months and 12 months after the surgery, and the recurrence rates of in situ and ectopic tumors were compared between the two groups. Results There was no significant difference in the operation time, intraoperative bleeding, duration of indwelling catheter and hospitalization days between the two groups (P >0.05). No significant difference was found in the incidences of perioperative complications between the two groups (P > 0.05). Besides, there was no significant difference in the recurrence rates between the NBI group and the WLI group at different time points (1 month, 3 months, 6 months and 12 months after the surgery) (P > 0.05). The total recurrence rate was 10.0% in the NBI group, which was lower than that in the WLI group (40.0%) (P < 0.05). The recurrence rate of in situ tumors in the WLI group was higher than that in the NBI group (P < 0.05). Postoperative tumor recurrence was positively correlated with age (rs = 0.43, P < 0.05), tumor grade (rs= 0.76, P < 0.05), tumor stage (rs = 0.53, P < 0.05), and the number of tumors in bladder (rs = 0.98, P < 0.05). Conclusions NBI flexible cystoscopy combined with holmium laser exhibits great therapeutic efficacy in NMIBC with high safety, and can reduce the postoperative tumor recurrence, which is of value for clinical application.