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Table 1 Characteristics of the recruited patients

From: Less micrometastatic risk related to circulating tumor cells after endoscopic breast cancer surgery compared to open surgery

CharacteristicEndoscopic group (n = 53)Open group (n = 57)P value
Age45(33–60)48(32–60)0.245
Menopausal status  0.391
 Premenopausal34(64.15%)32(56.14%) 
 Postmenopausal19(35.85%)25(43.86%) 
Tumor size  0.100
 T144(83.02%)40(70.18%) 
 T29(16.98%)15(26.32%) 
 T30(0%)2(3.51%) 
Lymph node (pN)  0.108
 pN033(62.26%)28(49.12%) 
 pN115(28.30%)18(31.58%) 
 pN24(7.55%)7(12.28%) 
 pN31(1.89%)4(7.02%) 
Tumor stage  0.180
 I29(54.72%)26(45.61%) 
 II19(35.85%)19(33.33%) 
 III5(9.43%)12(21.05%) 
Histology type  0.194
 Invasive ductal49(92.45%)56(98.25%) 
 Other4(7.55%)1(1.75%) 
Estrogen receptors status  0.473
 ER(+)32(60.38%)30(53.57%) 
 ER(−)21(39.62%)26(46.43%) 
Progesterone receptors status  0.776
 PR(+)26(49.06%)29(51.79%) 
 PR(−)27(50.94%)27(48.21%) 
HER-2 status  0.216
 HER-2(−)27(50.94%)36(64.29%) 
 HER-2(+)8(15.09%)7(12.50%) 
 HER-2(++)11(20.75%)5(8.93%) 
 HER-2(+++)7(13.21%)8(14.29%) 
Surgery duration, min220(146–479)125 (66–384)<0.001
Bleeding volume, mL100(30–800)100(30–400)0.766
  1. Represented as “median (range)” or “frequency (percentage)”
  2. Comparison between the two surgery groups was analyzed by Mann-Whitney test for continuous variable and ordinal variables, by Chi-square test or Fisher exact test for binomial variables