Synonym: superior vena cava syndrome
Obstruction of the superior vena cava (SVC) can be due to external pressure, involvement of the vessel by tumour tissue, or a blood clot obstructing the lumen. The most common cause is superior mediastinal pressure associated with lung cancer (over 85%).1 2
This is a companion discussion topic for the original article at https://patient.info/doctor/cardiovascular-disease/superior-vena-cava-obstruction