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Table 4 Radiation toxicity of the S and S + RT groups

From: Primary gross tumor volume is prognostic and suggests treatment in upper esophageal cancer

Radiation toxicity

Total

RT

S + RT

χ2

P

Acute radiation pneumonia

50(15.1)

34(15.8)

16(14.1)

0.169

0.681

    

2.741

0.433

 I

43(13.0)

28(13.0)

15(13.2)

  

 II

4(1.2)

3(1.4)

1(0.9)

  

 III

3(0.9)

3(1.4)

0(0.0)

  

Acute radiation esophagitis

164(49.7)

139(64.4)

25(22.0)

53.716

<0.001

    

57.795

<0.001

 I

121(36.7)

102(47.2)

19(16.7)

  

 II

41(12.4)

36(16.7)

5(4.4)

  

 III

2(0.6)

1(0.5)

1(0.9)