Salem, Mohammed Salah E. KhalifaAbdul, AlherekDaSilva, DanielMukendi, Alain MwambaJacob, Varghese2025-02-112025-01Mohammed Salah E. Khalifa Salem, Abdul Alherek, Daniel DaSilva, Jacob Varghese, Alain Mwamba Mukendi, Unprecedented Association: Bilateral UPJ obstruction with grade 3 hydronephrosis caused by Type 2 circumcaval right ureter and left lower pole crossing vessels, Urology Case Reports, Volume 59, 2025, 102958, ISSN 2214-4420, https://doi.org/10.1016/j.eucr.2025.102958.1961-9987 (online)10.1016/j.eucr.2025.102958https://hdl.handle.net/10539/43843Bilateral ureteropelvic junction obstruction resulting from distinct vascular anomalies on each side, with a preureteric vena cava on the right and crossing vessels on the left, has not been previously documented in the literature. Even more intriguing is the association between a grade 3 hydronephrosis and a type 2 circumcaval ureter. This unprecedented report discusses this association and its management.enAvailable online 22 January 2025 2214-4420/© 2025 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY-NC license.Circumcaval ureterHydronephrosisVascular anomalieUPJ obstructionCrossing vesselsSDG-5: Gender equalityArticle