title: Roentgenological localization of ureteral obstruction by non radio-opaque or indistinguishable calculi.
authors.forename: G
authors.initials: G
authors.lastname: GILL
authors.forename: W
authors.initials: W
authors.lastname: LIGHT
mesh_terms: D002137:Calculi; D006801:Humans; D010829:Physiological Phenomena; D014513:Ureter; D014517:Ureteral Obstruction; D053039:Ureterolithiasis
keywords: URETERS/calculi