Results:
A total of 132 patients were included in the study. Twenty-seven
patients (20.4%) had strap muscle invasion, twenty-two patients
(16.7%) had minimal tracheal invasion and 83 patients (62.9%) had
other forms of ETE. Kaplan-Meier models for structural recurrence
revealed that when combining T3b patients with T4a shave patients and
comparing them to other T4a patients, the former performed better than
the latter (p=0.028 for all ages; p= 0.021; for patients
>55 years).