The role of Narrow-band Imaging Cystoscopy in Non-muscular Invasive Bladder Cancer Management

Abstract

Cystoscopy is the most common assessment method for the lower urinary tract, with the primary goal of establishing pathology management that can occur at this level. The most used method of performing cystoscopy is with white light, but it can lead to omission of lesions, especially when considering millimetric tumor formations. New light source technologies are under development, such as narrow-band cystoscopy. Overall, we examined a total of 416 patients, known with tumoral lesions, in WLI followed by reassessment in NBI at the same time and transurethral resection of tumor biopsy specimens. In 37.5% of the cases, NBI highlighted 1 to 3 tumors in addition to WLI. In 178 cases, tumor formations were newly discovered, and in 238 patients these were recurrent. Histopathological diagnosis indicated the pTa stage in 67.3% of cases, in 27.64% patients presented with pT1 stage and in 5.04% of cases CIS was identified. In terms of grading, G1 was identified in 205 of the cases, 124 patients presenting G2 and G3 occurred in 87 of the cases.