NMIBC に対する可視化技術 そもそも, NBI を使用するのがまっとうである.

Advances in visualization technologies have made it possible to detect non-muscle-invasive bladder cancer (NMIBC), which is difficult to identify with conventional white-light imaging (WLI). Among these technologies, narrow-band imaging (NBI) emphasizes capillaries on the mucosal surface by narrowing WLI to two wavelengths. NBI is significantly more sensitive than WLI for detection of cancer lesions, and thus is useful for the diagnosis of NMIBC. Moreover, several meta-analyses have shown that transurethral resection of NMIBC under NBI (NBI-TUR) significantly reduces postoperative recurrence, compared to TUR under WLI (WLI-TUR). However, some cancer lesions remain difficult to detect with NBI, and there is a need for a flexible treatment strategy that includes the addition of other appropriate treatment methods after understanding the limitations of NBI. Despite these limitations, NBI is attractive in clinical practice because it does not require special pretreatment, there are no concerns about side effects from the administration of a photosensitizing agent, and there is no need for complicated perioperative management. This is ideal for obtaining optimal results in facilities in which time and resources are limited. Thus, NBI is a natural choice for NMIBC with regard to provision of care with maximum benefit in certain medical environments. [ABSTRACT FROM AUTHOR]