Fig. 2

A PFS after initial surgery for the whole cohort. Patients exposed to relapse are shown in lines 1 and 2, and patients followed are shown in third line. B PFS for patients with available data for post-operative residual tumor after first surgery (N = 228). Patients could have wait and see attitude and had post-operative residual tumor (N = 168) or without residual tumor (N = 29) or could be treated with adjuvant RT, all with residual tumor (N = 31). No patient treated by adjuvant radiotherapy had residual tumor. Patients without information concerning their residual tumor were excluded from this analysis (N = 28)