Superior Vena Cava
The superior vena cava (SVC) is the superior of the two venae cavae, is a major vein in a human body. It carries blood from the head, neck, upper chest, and arms to the heart. The SVC is located in the anterior right superior mediastinum. It is the typical site of central venous access (CVA) via a central venous catheter or a peripherally inserted central catheter. Superior vena cava syndrome (SVCS) occurs when a persons superior vena cava is partially blocked or compressed. Cancer is usually the main cause of SVCS, such as a cancer of the lung, metastatic cancer, or lymphoma. Obstruction can lead to enlarged veins in the head and neck, and may also cause breathlessness, cough, chest pain, and difficulty swallowing.
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