Phlebography for the study of obstruction of the veins of the superior vena caval system.
D006801:Humans; D010690:Phlebography; D013479:Superior Vena Cava Syndrome; D014680:Veins; D014683:Vena Cava, Superior
CAVAL SYSTEM/phlebography; PHLEBOGRAPHY/of superior caval system; VENA CAVAL SYSTEM/superior, obstruction, phlebography