"Ask the Expert” features answers by our experts to your clinical questions. Question: The patient is a 56-year-old male diagnosed with superior vena cava syndrome caused by small cell lung cancer (SCLC). He was irradiated and his obstructive symptoms were relieved. However, after radiation, he developed thrombosis of the abdominal aorta 15 days ago. He is now in poor overall clinical condition, with nausea, frequent vomiting, and declining performance status from his metastatic disease.What is...