title: [CT manifestations of retroperitoneal venous collaterals].
mesh_terms: D000368:Aged; D003097:Collateral Circulation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011169:Portal Vein / Q000000981:diagnostic imaging*; D012187:Retroperitoneal Space / Q000098:blood supply / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed