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

• 基于轴向CT的成像与多平面重新成形在临床应用，患者据此影像资料被划分入T1/T2；T3和T4四期；依据受累淋巴结情况分为N0；N1及N2.；三种情况。