Table 2 Local efficacy rate of salvage endoscopic therapy

Endoscopic mucosal resection

Total

Number

Complete resection rate (%)

95 % CI

P value

All patients

39

33

84.6

69.5–94.1

Circumference

0.089

  < 1/4

30

27

90.0

73.5–97.9

 1/4 ≤

9

6

66.7

29.9–92.5

Photodynamic therapy

Total

Number

Complete response rate (%)

95 % CI

P value

 All patients

38

25

65.8

48.6–80.4

 uT factor

0.263

  uT1

28

20

71.4

51.3–86.8

  uT2

10

5

50.0

18.7–81.3

Circumferential spread

0.136

  < 1/4

15

12

80.0

51.9–95.7

 1/4 ≤

23

13

56.5

30.6–73.2