FIGURE LEGEND
Figure 1: Kaplan Meier (KM) curves;
(A) KM for recurrence, all ages, 3-group analysis [blue = T3b (strap muscle involvement); green = T4a (minimal tracheal involvement); red = T4a (RLN, larynx, esophagus or subcutaneous tissue involvement)]
(B) KM for recurrence, age >55, 3-group analysis [blue = T3b (strap muscle involvement); green = T4a (minimal tracheal involvement); red = T4a (RLN, larynx, esophagus or subcutaneous tissue involvement)]
(C) KM for recurrence, all ages, 2-group analysis [blue = T3b (strap muscle involvement) + T4a (minimal tracheal involvement); red = T4a (RLN, larynx, esophagus or subcutaneous tissue involvement)]
(D) KM for recurrence, age >55, 2-group analysis [blue = T3b (strap muscle involvement) + T4a (minimal tracheal involvement); red = T4a (RLN, larynx, esophagus or subcutaneous tissue involvement)]