first-line treatment (surgery) | |
number of previous surgeries | |
 1 | 46 (61) |
 2 | 17 (23) |
 3 | 10 (13) |
 4 | 2 (3) |
total laryngetomy | 18 (24) |
larynx-preserving surgery | 57 (76) |
 vocal cord tripping | 2 (3) |
 endoscopic laser resection | 21 (28) |
 partial laryngectomy | 34 (45) |
unilateral ND | 10 (13) |
bilateral ND | 27 (36) |
 ECS | 11 (30) |
second-line treatment (RT/CRT) | |
median EQD2 in Gy | 67 Gy (60–72 Gy) |
median PTV1 | 101 cc (21–1949 cc) |
median PTV2 | 740 cc (51–72 cc) |
concomitant chemotherapy | 48 (64) |
concomitant cetuximab | 10 (13) |