title: Concurrent ureteropelvic and ureterovesical junction obstruction in children: the value of retrograde pyelography.
abstract: Ureteropelvic junction obstruction with concomitant ureterovesical junction obstruction is a rare condition whose treatment remains challenging [1-3]. Renal ultrasonography and diuretic renogram are universally utilized to assess a patient prior to pyeloplasty; however, the role of retrograde pyelography at the time of pyeloplasty is still debatable [5-7]. Herein, we describe two cases where the use of retrograde pyelography preoperatively helped to avoid pyeloplasty failure by allowing the surgeon to visualize a concurrent ureterovesical junction obstruction, which would not have been visible in the surgical field had the procedure been carried out without intraoperative imaging.
authors.affiliation: Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada.
authors.forename: Preveshen
authors.initials: P
authors.lastname: Moodley
authors.forename: Jorge
authors.initials: J
authors.lastname: Demaria
authors.forename: Armando J
authors.initials: AJ
authors.lastname: Lorenzo
authors.forename: Joao L
authors.initials: JL
authors.lastname: Pippi Salle
authors.forename: Luis H P
authors.initials: LH
authors.lastname: Braga
mesh_terms: D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000151:congenital / Q000209:etiology; D007223:Infant; D007682:Kidney Pelvis / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D008297:Male; D014517:Ureteral Obstruction / Q000150:complications / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D001743:Urinary Bladder / Q000000981:diagnostic imaging* / Q000473:pathology; D014567:Urography