Carbon dioxide contrast studies in retroperitoneal masses.
D000236:Adenoma / Q000000981:diagnostic imaging; D000310:Adrenal Gland Neoplasms / Q000000981:diagnostic imaging; D002245:Carbon Dioxide; D003287:Contrast Media; D006801:Humans; D008722:Methods; D010673:Pheochromocytoma / Q000000981:diagnostic imaging; D011028:Pneumoperitoneum, Artificial; D012186:Retroperitoneal Neoplasms / Q000000981:diagnostic imaging*; D014567:Urography
D003287:Contrast Media; D002245:Carbon Dioxide