“…Bacillus Calmette-Guérin (BCG) stands out as a frequently utilized and effective intravesical immunotherapy for superficial bladder cancer. 1 , 2 A strategy for the prevention of recurrent urinary bladder urothelial carcinoma (UC) is BCG instillation. 3 There is also a therapeutic topical upper urinary tract instillation as adjuvant treatment after conservative management of urothelial carcinomas to treat urothelial carcinomas of the upper tract (UTUC).…”