PD58-06 ANTEGRADE ADMINISTRATION OF REVERSE THERMAL MITOMYCIN GEL FOR PRIMARY CHEMOABLATION OF UPPER TRACT UROTHELIAL CARCINOMA VIA PERCUTANEOUS NEPHROSTOMY TUBE: A MULTI-INSTITUTIONAL REAL-WORLD EXPERIENCE. (May 2022) - Rose, Kyle; Narang, Gopal; Rosen, Geoffrey; Labbate, Craig; Campagna, Justin; Yu, Alice; Manley, Brandon; Spiess, Phillipe; Li, Roger; Adibi, Mehrad; Murray, Katie; Sexton, Wade; et al.