Robot-Assisted Radical Prostatectomy in a Patient With a Rectal Fistula Following Hydrogel Spacer Placement. - Ikezoe E; Nakanishi Y; Okumura G; Gozu S; Kanagawa T; Imasato N; Hirose K; Kataoka M; Yajima S; Masuda H (IJU case reports, 2026)