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Table 1 Clinicopathological characteristics of node-negative patients (n = 101)

From: Pattern of recurrence and prognostic factors in patients with pT1-3 N0 esophageal squamous cell carcinoma after surgery: analysis of a single center experience

Characteristic All (%) Recurrence (+) (%) Recurrence (−) (%) P-value
n = 101 n = 19 n = 82
Age (year)a
  < 64 46 (45.5) 8 (42.1) 38 (46.3) 0.738
  ≥ 64 55 (54.5) 11 (57.9) 44 (53.7)  
Gender
 Male 78 (77.2) 18 (94.7) 60 (73.2) 0.065
 Female 23 (22.8) 1 (5.3) 22 (26.8)  
Smoking history
 Present 50 (49.5) 10 (52.6) 40 (51.2) 0.762
 Absent 51 (50.5) 9 (47.4) 42 (48.8)  
Surgical approach
 Left-sided 45 (44.6) 7 (36.8) 38 (46.3) 0.453
 Right-sided 56 (55.4) 12 (63.2) 44 (53.7)  
Tumor location
 UT 11 (10.9) 5 (26.3) 6 (7.3) 0.041*
 MT 58 (57.4) 11 (57.9) 47 (57.3)  
 LT+ EGJ 32 (31.7) 3 (15.8) 29 (35.4)  
Tumor size (cm)a
  < 3 47 (47.5) 6 (31.6) 41 (51.2) 0.123
  ≥ 3 52 (52.5) 13 (68.4) 39 (48.8)  
pT Category     0.586
 0 1 (1.0) 0 (0.0) 1 (1.2)  
 1 30 (29.7) 4 (21.1) 26 (31.7)  
 2 20 (19.8) 4 (21.1) 16 (19.5)  
 3 50 (49.5) 11 (57.8) 39 (47.6)  
p TNM Stage     0.681
 0 1 (1.0) 0 (0.0) 1 (1.2)  
 IA1 8 (7.9) 2 (10.5) 6 (7.3)  
 IA2 22 (21.8) 2 (10.5) 20 (24.4)  
 IB 20 (19.8) 4 (21.1) 16 (19.5)  
 IIB 50 (49.5) 11 (57.8) 39 (47.6)  
  1. EGJ gastroesophageal junction, LT lower thoracic, MT middle thoracic, TNM the AJCC Tumor Node Metastasis Classification of Carcinoma of the Esophagus and Esophagogastric Junction (8th Edition); UT upper thoracic
  2. athe median was used as the cutoff value
  3. *:P-value < 0.05