title: Unilateral tubular obstruction: an unusual complication of urographic contrast media.
abstract: OBJECTIVE
  Our purpose was to report our experience with four patients with renal colic who had a rare unilateral complication from urographic contrast media, with a dense and striated nephrogram affecting only the healthy kidney. All cases were reversible.
  
  
  CONCLUSIONS
  An unusual complication of urography with a characteristic radiologic appearance is presented. This complication was transient and reversible in our patients. Unilateral tubular blockage induced by a contrast agent must be considered when the contralateral kidney shows evidence of ureteral obstruction.
authors.affiliation: Servicio de Radiodiagnóstico, Hospital Universitario, Valladolid, Spain.
authors.forename: F J
authors.initials: FJ
authors.lastname: Trueba Arguiñarena
authors.forename: J J
authors.initials: JJ
authors.lastname: Fuertes Alija
authors.forename: M
authors.initials: M
authors.lastname: Perez Homs
authors.forename: E
authors.initials: E
authors.lastname: Fernandez Del Busto
authors.forename: R
authors.initials: R
authors.lastname: Esteban Casado
mesh_terms: D000328:Adult; D003085:Colic / Q000000981:diagnostic imaging; D003287:Contrast Media / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007472:Iohexol / Q000009:adverse effects*; D007674:Kidney Diseases / Q000139:chemically induced* / Q000000981:diagnostic imaging; D007684:Kidney Tubules / Q000000981:diagnostic imaging* / Q000187:drug effects; D008297:Male; D011859:Radiography; D014514:Ureteral Calculi / Q000000981:diagnostic imaging
chemical_list: D003287:Contrast Media; D007472:Iohexol