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. 2017 Sep 12;5(9):E839–E846. doi: 10.1055/s-0043-113566

Table 2. Endoscopic submucosal dissection results.

Colon n = 110 Rectum n = 30 P value
ESD difficulty 0.33

  • Easy – en bloc + high speed

 71 (65) 15 (50)

  • Difficult

    • En bloc + low speed

    • Conversion to hybrid ESD/EMR

    • Abandoned
23 (21)
12 (11)
 4 (4)
 7 (23)
 5 (17)
 3 (10)
Causes of failure 0.22

  • Submucosal fibrosis

 10  4

  • Intolerance

  4  4

  • Bleeding

  1 –

  • Perforation

  1 –
Gravity countertraction: ineffective 24 (22)  1 (3) 0.02
Submucosal fibrosis 0.045

  • F1

 22 (20)  5 (17)

  • F2

 12 (11)  8 (27)
Bleeding frequency: high  6 (5)  5 (17) 0.06
Lesion lifting: poor  9 (8)  6 (20) 0.09
Submucosal approach: perpendicular 23 (21)  9 (30) 0.33
Scope control: paradoxical 12 (11)  2 (7) 0.73

ESD, endoscopic submucosal dissection; EMR, endoscopic mucosal resection.