A partial occlusion of the superior vena cava with resulting interference of venous blood flow from the head and neck to the heart. This emergency condition is typically caused by obstruction of the great vessels, usually by a cancer located in the mediastinum. It is marked by venous engorgement and edema of the head and neck.
A medical condition observed in individuals with lung cancer, characterized by the tumor exerting pressure on a significant blood vessel, leading to a range of symptoms.