What is a port-a-cath?

Tube under skin. The mediport is a small tube or catheter that is placed under the skin and enters a large blood vessel. It has a rubber disk that can be felt on the surface of the skin (this is the port) and a needle can be placed through the skin and enters the port. This allows blood to be drawn and most importantly, allows chemotherapy, fluids, antibiotics, etc to be given and distributed quickly.