Congenital Absence of Superior Vena Cava with no Manifestation of Superior Vena Cava Syndrome

ABSTRACT

Total absence of superior vena cava (SVC) is a very rare anomaly, and the patient usually suffers from SVC syndrome or conduction disturbances. We report an asymptomatic 27 year-old male, with complete absence of SVC. Transthoracic echocardiography and computed tomography demonstrated the absence of SVC and other congenital cardiac anomalies, but the presence of prominent collateral vessels that allow a sufficient venous return.