A typical example of frequently used long-term venous access is an access for home parenteral nutrition (typically for benign disease, which can sometimes go on for years or for indefinite period of time).
In this case, a tunneled central VAD with an appropriate stabilization is advisable: in order to have a long-term securement, (a) either the catheter is equipped with a Dacron (polyethylene-teraphthalate) cuff, or (b) the catheter is secured to the skin by a subcutaneously anchored system (SAS). Both options - if well used - guarantee the stabilization of the system indefinitely.
The choice of the site of access (on the arm - in the cervico-thoracic area - in the groin) depends on the availability of the deep veins.