Fig. 2From: Rare entities in head-and-neck cancer: salvage re-irradiation with carbon ionsThe median overall survival after carbon ion re-irradiation (CIR) in patients with recurrent head-and-neck cancer (HNC) was 28.5 months for patients with a radiotherapy (RT) interval ≥ 2 years compared to 8.9 months for patients with a RT interval < 2 years (p = 0.001)Back to article page