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Table 1 Patient and tumor characteristics in all patients

From: Endoscopic resection as an independent predictive factor of local control in patients with T1bN0M0 esophageal squamous cell carcinoma treated with chemoradiotherapy: a retrospective study

Characteristic Number Percent
Median age (years) 69 (Range 47–81)
Gender
 Male 77 84.6
 Female 14 15.4
Performance status
 0 86 94.5
 ≥ 1 5 5.5
Observation period (month)
 Median 59.8 (Range 0.7–190.7)
Main tumor location
 Upper thoracic 10 11.0
 Middle thoracic 54 59.3
 Lower thoracic 27 29.7
Tumor length (cm)
 Median 2 (Range 1–9)
Circumference of tumor
 < 3/4 73 80.2
 ≥ 3/4 18 19.8
Multiple lesion
 No 77 84.6
 Yes 14 15.4
Endoscopic resection
 No 28 30.8
 Yes 63 69.2
RT field
 IFI 13 14.3
 ENI 78 85.7
Radiation dose (Gy)
 < 50 Gy 23 25.6
 ≥ 50 Gy 68 74.4
  1. RT radiotherapy, IFI involved field irradiation, ENI elective nodal irradiation