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Table 1 Baseline characteristics before chemoradiotherapy and salvage endoscopic therapy

From: Local efficacy and survival outcome of salvage endoscopic therapy for local recurrent lesions after definitive chemoradiotherapy for esophageal cancer

Before chemoradiotherapy Total (n = 77) EMR (n = 39) PDT (n = 38) P value
Characteristics Number % Number % Number %
Gender        1.000
 Male 74 96.1 37 94.9 37 97.4  
 Female 3 3.9 2 5.1 1 2.6  
Location        0.509
 Upper 22 28.6 11 28.2 11 28.9  
 Middle 41 53.2 19 48.7 22 57.9  
 Lower 14 18.2 9 23.1 5 13.2  
cT factor        0.271
 1 33 42.9 21 53.8 12 31.6  
 2 10 13.0 4 10.3 6 15.8  
 3 27 35.1 11 28.2 16 42.1  
 4 7 9.1 3 7.7 4 10.5  
Lymph node metastasis        0.355
 Absent 47 61.0 26 66.7 21 55.3  
 Present 30 39.0 13 33.3 17 44.7  
cStage        0.394
 I 27 35.1 17 43.6 10 26.3  
 II 27 35.1 13 33.3 14 36.8  
 III 16 20.8 6 15.4 10 26.3  
 IV 7 9.1 3 7.7 4 10.5  
Before salvage endoscopic therapy Total (n = 77) EMR (n = 39) PDT (n = 38) P value
Characteristics Number % Number % Number %
Median age (range) 65 (44–84)   63 (44–77)   67 (51–84)   0.038
Chemotherapy regimen        0.716
 Cisplatin + fluoropyrimidine 71 92.2 36 92.3 35 92.1  
 Nedaplatin + fluoropyrimidine 3 3.9 2 5.1 1 2.6  
 Monotherapy 3 3.9 1 2.6 2 5.3  
Radiation dose        0.702
 50.4 29 37.7 13 33.3 16 42.1  
 60 43 55.8 23 59.0 20 52.6  
  > 60 5 6.5 3 7.7 2 5.3  
Tumor depth evaluated with EUS        <0.001
 uT1 67 87.0 39 100.0 28 73.7  
 uT2 10 13.0 0 0.0 10 26.3  
Circumferential spread        0.002
  < 1/4 45 58.4 30 76.9 15 39.5  
 1/4 ≤, < 1/2 27 27.0 6 15.4 21 55.3  
 1/2 ≤, < 3/4 4 4.0 2 5.1 2 5.3  
 3/4 ≤ 1 1.3 1 2.6 0 0.0  
  1. Abbreviations: EUS endoscopic ultrasound, EMR endoscopic mucosal resection, PDT photodynamic therapy