title: Pyelovenous backflow or veno-caliceal valve fistula?
abstract: A 70-year-old male with urinary bladder carcinoma was admitted for follow-up. Retrograde pyelography demonstrated transfer of contrast medium into the left renal vein in two independent sessions. The absence of hematuria and a negative CT scan ruled out a classical veno-caliceal fistula. The presence of a veno-caliceal valve fistula into the left renal vein was hypothesized.
authors.affiliation: Department of Urology, Hannover Medical School, Hannover, Germany. tezval.hossein@mh-hannover.de
authors.forename: Hossein
authors.initials: H
authors.lastname: Tezval
authors.forename: Ira
authors.initials: I
authors.lastname: Matuschek
authors.forename: Udo
authors.initials: U
authors.lastname: Jonas
mesh_terms: D000368:Aged; D006801:Humans; D007670:Kidney Calices; D007682:Kidney Pelvis / Q000098:blood supply*; D008297:Male; D012082:Renal Veins / Q000503:physiopathology*; D001749:Urinary Bladder Neoplasms / Q000150:complications; D014548:Urinary Fistula / Q000175:diagnosis*; D014567:Urography; D016157:Vascular Fistula / Q000175:diagnosis*; D014680:Veins