Carbon dioxide contrast studies in retroperitoneal masses.
D000310:Adrenal Gland Neoplasms / Q000000981:diagnostic imaging; D002245:Carbon Dioxide; D006801:Humans; D008722:Methods; D012186:Retroperitoneal Neoplasms / Q000000981:diagnostic imaging*; D012187:Retroperitoneal Space / Q000000981:diagnostic imaging; D013679:Technology, Radiologic; D014567:Urography
D002245:Carbon Dioxide