original_query: What is a central venous catheter (CVC) and where is it placed?
query: What is a central venous catheter (CVC) and where is it placed?
answer: A central venous catheter (CVC), also known as a central line, is a catheter placed into a large vein.  Common placement sites include veins in the neck (internal jugular vein), chest (subclavian or axillary vein), groin (femoral vein), or arms (PICC line).