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第45卷第1期         朱美娣,许紫鹏,华玲玲,等. 基于B 超特征构建外侧象限乳腺癌腋窝淋巴结转移列线图预测
                  2025年1月                   模型[J]. 南京医科大学学报(自然科学版),2025,45(1):13-21                     · 17  ·


                                              表3 训练集和验证集乳腺肿瘤超声特征比较
                     Table 3  Comparison of breast tumor B⁃ultrasound characteristics between the training and validation datasets

                            Characterisitic            Training set(n=63)     Validation set(n=64)      P
                     Age(x ± s)                          60.97 ± 10.88           60.81 ± 13.62         0.943
                     Growth pattern[n(%)]                                                              0.722
                       Vertical                           6(9.52)0,               4(6.25)00
                       Horizontal                        57(90.48)0,             60(93.75)00
                     Tumor diameter[mm,M(P25,P75)]      22.0(15.0,28.5)         22.0(16.0,30.0)        0.935
                     Echo[n(%)]                                                                        0.217
                       Low                               62(98.41)0,             59(92.19)00
                       High                               1(1.59)0,               5(7.81)00
                     Internal echo[n(%)]                                                               0.515
                       Homogeneity                       44(69.84)0,             48(75)0000.
                       Heterogeneity                     19(30.16)0,             16(25)0000.
                     Margin[n(%)]                                                                      0.773
                       Smooth                             5(7.94)0,               6(9.38)00
                       Unsmooth                          58(92.06)0,             58(90.62)00
                     Form[n(%)]                                                                        0.478
                       Regular                            8(12.70),              11(17.19)00
                       Irregular                         55(87.30)0,             53(82.81)00
                     Spiculated margins[n(%)]                                                          0.660
                       No                                31(49.21)0,             29(45.31)00
                       Yes                               32(50.79)0,             35(54.69)00
                     Corner edge[n(%)]                                                                 0.793
                       No                                49(77.78)0,             51(79.69)00
                       Yes                               14(22.22)0,             13(20.31)00
                     Hyperechoic halo[n(%)]                                                            0.263
                       No                                57(90.48)0,             62(96.88)00
                       Yes                                6(9.52)0,               2(3.12)00
                     Rear echo attenuation[n(%)]                                                       0.017
                       No                                50(79.37)0,             60(93.75)00
                       Yes                               13(20.63)0,              4(6.25)00
                     Calcification[n(%)]                                                               0.533
                       No                                29(46.03)0,             33(51.56)00
                       Yes                               34(53.97)0,             31(48.44)00
                     Blood suppl[n(%)]                                                                 0.832
                       Less/Moderate                     54(85.71)0,             54(84.38)00
                       Abundant                           9(14.29),              10(15.62)00

                                             表4 训练集和验证集腋窝淋巴结超声特征比较
                  Table 4 Comparison of ultrasound features of axillary lymph nodes between the training and validation datasets[n(%)]
                                       Training  Validation                             Training  Validation
                 Ultrasound characteristic  set(n=63)  set(n=64)  P  Ultrasound characteristic  set(n=63)  set(n=64)  P

                Lymphatic metastasis                       0.521  Cortical thickness                        0.864
                  No                  38(60.32) 35(54.69)          Normal              50(79.37) 50(78.12)
                  Yes                 25(39.68) 29(45.31)          Thicken             13(20.63) 14(21.88)
                Lymph node morphology                      0.761  Lymphatic hilum structure                 0.478
                  Regular             58(92.06) 59(92.19)          Clear               55(87.30) 53(82.81)
                  Irregular           05(7.94)  05(7.81)           Unclear             08(12.70) 11(17.19)
                Lymph node growth pattern                  0.496  Blood suppl                               0.761
                  Vertical            01(1.59)  00(0)              Less/Moderate       59(93.65) 58(90.62)
                  Horizontal          62(98.41) 64(100.0)          Abundant            04(6.35)  06(9.38)
                Echoes inside lymph nodes                  0.336
                  Homogeneity         60(95.24) 57(89.06)
                  Inhomogeneity       03(4.76)  07(10.94)
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