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Table 1 Pre- and postoperative pathological characters

From: Comparison of thoracolaparoscopic esophagectomy with cervical anastomosis with McKeown esophagectomy for middle esophageal cancer

  ME group (n = 62) TE group (n = 51) p
Preoperative T stage    <0.0001#
 Tis 0 (0 %) 3 (5.9 %)  
 T1 5 (8.1 %) 15 (29.4 %)  
 T2 17 (27.4 %) 25 (49.0 %)  
 T3 38 (61.3 %) 8 (15.7 %)  
 T4 2 (3.2 %) 0 (0 %)  
Preoperative N stage    
 N0 18 (29.0 %) 31 (60.8 %) 0.001*
 N1 28 (45.2 %) 16 (31.4 %)  
 N2 11 (17.7 %) 4 (7.8 %)  
 N3 5 (8.1 %) 0 (0 %)  
Preoperative M stage    
 M0 61 (98.4 %) 51 (100 %) 0.362
 M1 1 (1.6 %) 0 (0 %)  
Preoperative TNM stage    0.322
 IA 5 (8.1 %) 9 (17.6 %)  
 IB 11 (17.7 %) 10 (19.6 %)  
 IIA 12 (19.4 %) 10 (19.6 %)  
 IIB 8 (12.9 %) 11 (21.6 %)  
 IIIA 16 (25.8 %) 8 (15.7 %)  
 IIIB 7 (11.3 %) 3 (5.9 %)  
 IIIC 2 (3.2 %) 0 (0 %)  
 IV 1 (1.6 %) 0 (0 %)  
Postoperative T stage    0.001*
 Tis 0 (0 %) 2 (3.9 %)  
 T1 11 (17.7 %) 11 (21.6 %)  
 T2 13 (21.0 %) 27 (52.9 %)  
 T3 37 (59.7 %) 11 (21.6 %)  
 T4 1 (1.6 %) 0 (0 %)  
Postoperative N stage    0.270
 N0 31 (50.0 %) 34 (66.7 %)  
 N1 16 (25.8 %) 11 (21.6 %)  
 N2 13 (21.0 %) 5 (9.8 %)  
 N3 2 (3.2 %) 1 (2.0 %)  
Postoperative M Stage    0.196
 M0 60 (96.8 %) 51 (100 %)  
 M1 2 (3.2 %) 0 (0 %)  
Number of removed LN 15.3 ± 3.2 17.8 ± 3.6 0.0002*
Vessel cancer embolus 15 (24.2 %) 14 (27.5 %) 0.693
Nerve invasion 11 (17.7 %) 8 (15.7 %) 0.771
Median mD (mm) 31.3 ± 4.2 28.8 ± 3.4 0.001*
Morphology    0.711
 Concealed 0 (0 %) 1 (2.0 %)  
 Erosive 1 (1.6 %) 2 (3.9 %)  
 Plaque 0 (0 %) 1 (2.0 %)  
 Polypoid 1 (1.6 %) 0 (0 %)  
 Medullary 26 (41.9 %) 18 (35.3 %)  
 Fungating 9 (14.5 %) 6 (11.8 %)  
 Ulcer 22 (35.5 %) 21 (41.2 %)  
 Constrictive 3 (4.8 %) 2 (3.9 %)  
Differentiation    0.626
 G1 6 (9.7 %) 4 (7.8 %)  
 G2 25 (40.3 %) 27 (52.9 %)  
 G3 28 (45.2 %) 18 (35.3 %)  
 G4 2 (3.2 %) 2 (3.9 %)  
 Gx 1 (1.6 %) 0 (0 %)  
Postoperative TNM stage    0.197
 IA 6 (9.7 %) 8 (15.7 %)  
 IB 5 (8.1 %) 9 (17.6 %)  
 IIA 7 (11.3 %) 10 (19.6 %)  
 IIB 12 (19.4 %) 11 (21.6 %)  
 IIIA 17 (27.4 %) 7 (13.7 %)  
 IIIB 10 (16.1 %) 5 (9.8 %)  
 IIIC 3 (4.8 %) 1 (2.0 %)  
 IV 2 (3.2 %) 0 (0 %)  
Postoperative chemotherapy 42 (67.7 %) 28 (54.9 %) 0.162
Postoperative chemotherapy + radiotherapy 19 (30.6 %) 11 (21.6 %) 0.277
  1. ME McKeown esophagectomy, TE thoracolaparoscopic esophagectomy, T tumor, Tis tumor in situ, N node, M metastasis, LN lymph node, mD medium diameter, G grade
  2. *p < 0.05; # p < 0.0001