Fig. 2From: Predictive value of skin invasion in recurrent head and neck cancer patients treated by hypofractionated stereotactic re-irradiation using a cyberknifeInfluence of skin invasion. The thick line represents the skin invasion (−) group and the thin line represents the skin invasion (+) group. a Local control rates according to the presence of skin invasion. b Progression-free survival rates according to the presence of skin invasion. c Overall survival rates according to the presence of skin invasionBack to article page