Fig. 2From: Reduced volume SIB-IMRT/IGRT to head and neck cancer in elderly and frail patients: outcome and toxicityKaplan-Meier Estimates of Survival in high-risk vs. low-risk Patients. Overall survival for patients with either ≤3 concomitant diseases or with >3 concomitant diseases and no tumor related risk factor (Panel a). Panel b: Overall survival for patients with > concomitant diseases and at least one tumor related risk factorBack to article page