Computed tomography (CT) of the retroperitoneum.
D000307:Adrenal Gland Diseases / Q000000981:diagnostic imaging; D001201:Ascites / Q000000981:diagnostic imaging; D006801:Humans; D007674:Kidney Diseases / Q000000981:diagnostic imaging; D010182:Pancreatic Diseases / Q000000981:diagnostic imaging; D012186:Retroperitoneal Neoplasms / Q000000981:diagnostic imaging*; D012187:Retroperitoneal Space / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed