The most common symptom is dyspnea, followed by face or arm swelling.<ref name=emedicine>[http://emedicine.medscape.com/article/760301-overview Emedicine > Superior Vena Cava Syndrome.] Author: Michael S Beeson, MD, MBA, FACEP, Professor of Emergency Medicine, Northeastern Ohio Universities College of Medicine and Pharmacy; Attending Faculty, Summa Health System. Updated: Dec 3, 2009</ref>
;Technique
[[CT angiography]] with contrast given simultaneously in both arms, or regular [[contrast CT]] in venous phase.
==Look for==