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Table 1 The clinical, pathological and surgical features of patients in the MIE group

From: Learning curve for minimally invasive oesophagectomy of oesophageal cancer and survival analysis

  1st stage 2nd stage 3rd stage 4th stage P value
Cases 20 37 50 107  
Proportion of males (%) 95 89 88 81 0.340
Age mean (SD) 58.2(10.6) 63.1(10.8) 60.9(8.9) 64.7(10.4) 0.351
Proportion of smoking (%) 83 87 80 80 0.637
Neoadjuvant therapy (%) 15 16.2 22 13 0.479
Histology type
Squamous Cell Carcinoma  20 37 49 106  
Adenocarcinoma 0 0 1 0  
Small Cell Carcinoma 0 0 0 1 0.543
Differentiation grade
Middle or high differentiated 16 16 17 42  
 Poorly differentiated 4 21 33 65 0.004
Pathological stage
I 0 0 0 6  
II 13 23 28 52  
III 7 14 22 49 0.103
Negative margin 100% 100% 100% 98.13%  
Cases 20 37 50 107  
Bleeding volume (ml) 265.5 ± 107.2 199.4 ± 102.8 189.1 ± 90.7 185.9 ± 86.1 0.0092
Operation time (mins) 420.2 ± 64.3 263.5 ± 47.6 244.9 ± 60.2 248.1 ± 51.2 0.0000
Complication rate (%) 50.0 29.7 26.1 23.5 0.105
Cervical anastomotic fistula (%) 16.7(3/18) 14.8(4/27) 8.7(3/34) 9.8(6/61) 0.759
Chest anastomotic fistula (%) 0 0 0 4.3(2/46) 0.632
laryngeal nerve injury (%) 5 5.4 4 3.7 0.813
Mortality within 3 months (%) 10.0 5.4 0 0 0.0024
Lymph node dissection  12.65 ± 4.13 15.91 ± 3.36 20.16 ± 7.71 22.67 ± 7.39 0.0000
Node dissection ≥ 12 14 36 50 101 0.0000
Node dissection ≥ 18 1 12 29 71 0.0000
Location
Upper or mid to upper 1 8 9 15  
Mid or lower to mid 18 23 30 65  
Lower 1 6 11 27 0.367
Procedure
Ivor-Lewis 2 10 16 46  
McKeown 18 27 34 61 0.021