title: Defects in the urographic contrast medium above and below a ureteric calculus.
mesh_terms: D000818:Animals; D003973:Diatrizoate / Q000378:metabolism*; D006801:Humans; D011817:Rabbits; D014514:Ureteral Calculi / Q000000981:diagnostic imaging* / Q000378:metabolism; D014567:Urography
chemical_list: D003973:Diatrizoate