Unsuspected superior vena caval obstruction detected by angiocardiography.
D000790:Angiocardiography; D000792:Angiography; D002319:Cardiovascular System / Q000000981:diagnostic imaging*; D004194:Disease; D006801:Humans; D013479:Superior Vena Cava Syndrome; D014684:Venae Cavae
ANGIOGRAPHY; CARDIOVASCULAR SYSTEM/radiography; VENAE CAVAE/diseases