EP-1155 Rare entities in head-and-neck cancer: A single institutional experience of carbon-ion reirradiation. (April 2019) - Held, T.; Windisch, P.; Akbaba, S.; Lang, K.; Bernhardt, D.; Plinkert, P.; Kargus, S.; Freier, K.; Rieken, S.; Herfarth, K.; Debus, J.; Adeberg, S.