Do most cancer patients who receive chemotherapy have a port installed into their chest? i know this is a way to deliver chemo drugs into body.

Yes for Venous Acces: Most chemo is given via the veins of your arms but it can cause quite a bit of burning pain. Moreover the veins tend to close down(thrombosed) ,so you would soon run out of the veins of your arms. In order to avoid this problem oncologists like to use a long catheter(PICC line) or insert a Port(which is a surgical procedure).So there are 3 ways to access the veins...your oncologist should explain.