title: Computed tomography of retroperitoneal fluid collections.
mesh_terms: D000038:Abscess / Q000000981:diagnostic imaging* / Q000209:etiology; D003560:Cysts / Q000000981:diagnostic imaging* / Q000652:urine; D006470:Hemorrhage / Q000000981:diagnostic imaging* / Q000209:etiology; D006801:Humans; D012187:Retroperitoneal Space / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed