title: CT diagnosis of periureteric venous ring.
mesh_terms: D000328:Adult; D006801:Humans; D006869:Hydronephrosis / Q000000981:diagnostic imaging / Q000209:etiology; D008297:Male; D014057:Tomography, X-Ray Computed; D014517:Ureteral Obstruction / Q000000981:diagnostic imaging* / Q000209:etiology; D014682:Vena Cava, Inferior / Q000002:abnormalities* / Q000000981:diagnostic imaging