Hydronephrosis modifies the association between ureteroscopy and intravesical recurrence risk after radical nephroureterectomy for upper tract urothelial carcinoma. - Sano T; Ikeda J; Yoshida T; Nakamoto T; Motoki Y; Yoshida R; Takahashi T; Hattori Y; Yamasaki T; Imamura M; Kobori G; Watanabe J; et al. (Scientific reports, 2026)