Based on axial CT images and multiplanar reformations, patients were staged as T1/T2, T3, and T4; nodal inolement was classified as N0, N1, and N2.

• 根据过中轴的CT影像和多平面重新成形，患者被分为T1/T2,T3和T4，根据淋巴结分为N0,N1和N2