In this video, Trinity J. Bivalacqua, MD, PhD, presents the case of a 63-year-old man with history of carcinoma in situ (CIS) found to have low-grade Ta non-muscle invasive bladder cancer. He had persistent positive cytology for high-grade urothelial cancer. He received bacillus Calmette-Guérin more than 12 months previously for CIS. When he returned for a second opinion about management, a cysto biopsy with hexaminolevulinate (HAL [Cysview]). was recommended. HAL was able to identify CIS, which was only visible on blue light cystoscopy.

http://urologytimes.modernmedicine.com/urology-times/news/bladder-ca-case-study-63-year-old-man-history-carcinoma-situ