title: Barium granuloma: an unusual cause of unilateral ureteral obstruction.
abstract: A small amount of barium extravasated at the time of colonic surgery led to the development of a barium granuloma that caused unilateral ureteral obstruction. Although the barium was not detected on radiography or urography preoperatively, it was clearly visible at the time of ureteral exploration and ureterolysis.
authors.forename: J M
authors.initials: JM
authors.lastname: Walther
authors.forename: N A
authors.initials: NA
authors.lastname: Romas
authors.forename: F C
authors.initials: FC
authors.lastname: Lowe
mesh_terms: D001466:Barium Sulfate / Q000009:adverse effects*; D005119:Extravasation of Diagnostic and Therapeutic Materials / Q000150:complications*; D005260:Female; D005549:Foreign-Body Reaction / Q000209:etiology*; D006099:Granuloma / Q000209:etiology*; D006801:Humans; D008875:Middle Aged; D014517:Ureteral Obstruction / Q000209:etiology*
chemical_list: D001466:Barium Sulfate