3.3.Relationship between histopathological data and LNM
The relationship between LVI, PNI and necrosis and LNM was evaluated by chi-square test, and the data are summarized in Table 2. LVI was observed in 16 (47.1%) and PNI in 13 (38.2%) of the cases with LNM. A statistically significant correlation was observed between LNM, LVI and PNI (p <0.001, p=0.005, respectively). LNM was present in 14 of the cases (41.2%) with tumoral necrosis. There was no statistically significant relationship between the presence of necrosis and LNM (p=0.08).