I will address the second part of your question, as I have no experience with ports or personal chemotherapy. I had hoped to have the dental portion of the site up this week that answers this common question, but I will take an abbreviated shot at it here. Radiation treatments damage healthy tissues as well as kill malignant cells. One of the by products of radiation exposure to bone, is that the micro vacularization in it which supplies the blood, which in turn supplies the nutrients and oxygen, is partially destroyed by the radiation exposure. In the long run this means that that bone is not very efficient at healing after treatment with radiation. If you have a dental condition that in the future, after treatments, may require the extraction of a tooth, there is a risk that the "socket" in the bone where the tooth was, may not heal in properly, and a chronic condition may occur. This condition is known as osteoradionecrosis (bone/radiation/death). When this condition exists, the soft tissues overlying the necrotic bone will not heal, and you can develop a serious situation which MAY involve a surgery to remove the necrotic bone all the way back to some point in which there is healthy, well vascularized bone that will heal. Osteoradionecrosis can be sometimes treated with hyperbaric sessions in a pressurized, oxygen rich environment, like the kind of chamber they put divers in for decompression sickness. This super saturates the bone with more oxygen necessary to allow it to heal properly. It can be a long process, with 20 to 40 treatments or "dives" in the chamber. So having said all of that, the more prudent course of events would be to do the extraction of any marginal teeth which are compromised by periodontal disease, extensive caries, etc. BEFORE the radiation treatments begin, when things will still heal normally. Ideally, you would like to do any necessary dental work, including cleanings, and getting any significant periodontal (soft tissue gum disease) problems taken care of first. Patients undergoing radiation treatments have their mouths changed drastically as a result of the treatments. Saliva becomes thickened, and eventually dries up. This is due to radiation damage to the salivary glands. Your saliva has protective enzymes in it that help prevent tooth decay, and without this, you are at further risk of tooth decay. If there are problems that exist before treatment, they will only get worse during treatment because of these side effects. So what all that means is your mouth needs to be in the optimum condition before you start your radiation treatments, and during treatments when your mouth is very sore with mucositis and is full of thickened saliva, you still really have to work at keeping things clean and healthy. Fluoride applied to the teeth daily helps with the decay, but the periodontal conditions have to be dealt with though conscientious oral hygiene. (At a point in your life when you are so tired, sick, and sore that you really don't want to deal with it.) Those that do not make the effort, risk serious problems after the radiation treatments.