This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
Emergency radiotherapy is given in 
Select and explain. 
A. Superior vena cava syndrome, B. Pericardial temponade, C. Increased ICP, D. Spinal cord compression
A: Superior vena cava syndrome
Answer: A: Superior vena cava syndrome 
Explanation: Note the swelling of his face first thing in the morning (left) and its resolution after being upright all day (right). Specialty. Pulmonology.
Superior vena cava syndrome (SVCS), is a group of symptoms caused by obstruction of the superior vena cava
(a short, wide vessel carrying circulating blood into the heart).