3.2. Predictive Factors of Cancer RelapseOut of all patients, 45 experienced relapse, corresponding to a 60-month relapse rate of 33.8% ± 8.0%. Relapse occurred in the first year after surgery in 9 cases (20.0%), the second year in 18 cases (40.0%), the third year in 12 (26.7%), the fourth year in 0 cases (0.0%), and the fifth year in 6 cases (13.3%). Of the all of these relapses, 2(4.4%) were local, 4 (8.9%) were loco-regional, 19 (42.2%) were metastatic and 11 (24.4%) were in more sites.The median time from surgery to relapse was 7.0 months (IQR: 3.0 - 15).Socio-demographic and cancer characteristics in patients who relapsed and those who did not relapse are presented in Table 1 and Table 2 respectively. The median time from diagnosis to surgery was 6 (IQR: 3.5 - 8.5) and 4 months (IQR: 3.0 - 6.0), respectively in the relapse and no relapse patients (P = 0.04). It is worth noting that at the time of diagnosis, the primary cancer was more advanced in patients who experienced relapse. In these patients, cancer was mainly at stage III (P = 0.03). The results of logistic multivariate regression showed that the predictor factors of relapse were age [OR = 0.94; 95%CI (0.92 - 0.99; P = 0.005)], and the stages III and IV of cancer [OR = 6.30; 95%CI (1.72 - 22.97); P = 0.005)]. The body mass index was retained in the model but the association was not statistically significant (OR = 1.10; 95%CI (0.99 - 1.22; P = 0.08).