Fig. 4From: Do patients with cN0 oral squamous cell carcinoma benefit from elective neck dissection? A large-scale population-based studySubgroup survival analysis of END in cN0 OSCC patients who only underwent primary site surgery without radiation and chemotherapy according to the primary site (A, B) or T stage (C, D). Abbreviations: DSS Disease-specific survival, END Elective neck dissection, OS Overall survival, OSCC Oral squamous cell carcinomaBack to article page