[Collateral venous circulation in superior vena cava obstructions].
D000792:Angiography; D000818:Animals; D001401:Azygos Vein / Q000502:physiology*; D003097:Collateral Circulation; D004285:Dogs; D014683:Vena Cava, Superior / Q000502:physiology*
A circulação colateral venosa nas obstruções da veia cava superior.