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Table 3 The expression of AE1/AE3 protein in different components of PESC

From: The alterations of cytokeratin and vimentin protein expressions in primary esophageal spindle cell carcinoma

  Number Expression rate of AE1/AE3 protein (%) Positive in epithelial component (%) Positive in spindle component (%) Positive in both of epithelial and spindle components (%) χ 2 P
Age
  < 60 years 26 19 (73.1) 19 (73.1) 6 (23.1) 6 (23.1) 0.24 0.888
  ≥ 60 years 56 51 (91.1) 51 (91.1) 13 (23.2) 13 (23.2)
Gender
 Male 57 48 (84.2) 48 (84.2) 13 (22.8) 13 (22.8) 0.00 1.000
 Female 25 22 (88.0) 22 (88.0) 6 (24.0) 6 (24.0)
Family history
 Positive 18 16 (88.9) 16 (88.9) 1 (5.6) 1 (5.6) 5.777 0.118
 Negative 64 54 (84.3) 54 (84.3) 18 (28.1) 18 (28.1)
Smoking
 Yes 41 34 (82.9) 34 (82.9) 10 (24.4) 10 (24.4) 0.197 0.978
 No 41 36 (87.8) 36 (87.8) 9 (22.0) 9 (22.0)
Alcohol
 Yes 36 30 (83.3) 30 (83.3) 10 (27.8) 10 (27.8) 1.154 0.764
 No 46 40 (87.0) 40 (87.0) 9 (19.6) 9 (19.6)
Tumor location
 Upper 3 2 (66.7) 2 (66.7) 1 (33.3) 1 (33.3) 6.42 0.126
 Middle 54 46 (85.2) 46 (85.2) 16 (29.6) 16 (29.6)
 Lower 25 22 (88.0) 22 (88.0) 2 (8.0) 2 (8.0)  
Gross appearance
 Polypoid 69 59 (85.5) 59 (85.5) 15 (21.7) 15 (21.7) 3.22 0.794
 Ulcerative 8 6 (75.0) 6 (75.0) 1 (12.5) 1 (12.5)
 Infiltrating 5 5 (100.0) 5 (100.0) 3 (60.0) 3 (60.0)
Lymph node metastasis
 Yes 23 21 (91.3) 21 (91.3) 8 (34.8) 8 (34.8) 1.60 0.449
 No 59 49 (83.1) 49 (83.1) 11 (18.6) 11 (18.6)
TNM stage
 I 29 27 (93.1) 27 (93.1) 3 (10.3) 3 (10.3) 6.71 0.146
 II 37 28 (75.7) 28 (75.7) 9 (24.3) 9 (24.3)
 III 16 15 (93.8) 15 (93.8) 7 (43.8) 7 (43.8)
 IV 0 0 (0.0) 0 (0.0) 0 (0.0) 0 (0.0)