As I understand it, there are three general types of line, which all end up at the superior vena cava, a large blood vessel near the heart. A PICC line, standing for Peripherally Inserted Central Catheter (“central” referring to the large blood vessel) has the open end coming out in the upper arm. The line has to be kept tidy when it’s not in use so is usually stuck to your arm with dressings (I think) and you can get a sleeve or use a loose tubigrip bandage to cover it up so it doesn’t catch on clothes.
A central line comes in a couple of flavours which are slightly different, there’s the Hickman line which a lot of ladies on here have, and a Groeschung line. There is a minor difference to do with valves or something similar (not quite sure) but the principle is that where the PICC comes out in your upper arm, the central line comes out in the upper chest. To keep it tidy, the external part is taped to your chest with dressings.
Both lines are usually inserted under local anaesthetic, perhaps with additional sedation. It’s uncomfortable but not painful, according to the ladies on here who’ve had it.
A portacath is a subcutaneous line, where instead of having the end of the line protruding from the body, the port is under the skin. To access the port they need to use a special needle, and not everyone knows how to use this, so you might find blood tests and any emergency procedure still has to be done in the normal fashion. It is inserted either under general anaesthetic or local plus sedation. Again it’s uncomfortable but not painful, and sedation is pretty hefty so you don’t actually care!
Both the PICC and central lines need to be flushed weekly with saline and anti-clotting stuff, to keep the line clear, the Portacath needs to be flushed once a month.
One benefit of the chemo being delivered into a large blood vessel rather than a scrawny little vein in your hand is the volume of blood quickly dilutes the chemo and so you don’t end up with veins getting very painful and possibly breaking down, and Epirubicin, the E in FEC, can often cause vein problems. It also means, particularly with the PICC and Hickman lines, that it’s very easy to take blood for tests and so on, so if you have a needle phobia it can be a complete godsend to have a central line.
I have a portacath and I’m very glad of it, I really hate them digging around for blood vessels and find that very distressing. I think everyone who’s had a line inserted prefers it to having to put up with having a cannula inserted.
Good luck to your mum, and hope the information helps. If you want more detail, give the helpline a ring, they’re very good and really know their onions.