Skip to main content

Table 1 Clinical characteristics of the colorectal polyps as per different endoscopic resection methods

From: Influence of early colorectal cancer component on the positive margins after endoscopic resection: a retrospective study

Characteristics

All

HSP

EMR

ESD

P

1202 (100%)

167 (13.89%)

712 (59.23%)

323 (26.87%)

Age, year (Median, IQR)

63(56,68)

62(57,67)

63(56,68)

64(57,69)

0.211

Sex

    

0.003

 Female

437(36.36%)

62(37.13%)

233(32.72%)

142(43.96%)

 

 Male

765(63.64%)

105(62.87%)

479(67.28%)

181(56.04%)

 

Morphology

    

< 0.001

 Sessile

474(39.43)

39(23.35)

215(30.2)

220(68.11)

 

 Pedunculated

728(60.57)

128(76.65)

497(69.8)

103(31.89)

 

Location

    

< 0.001

 Rectum

347(28.87)

48(28.74)

195(27.39)

104(32.2)

 

 Distal colon

594(49.42)

82(49.1)

392(55.06)

120(37.15)

 

 Proximal colon

261(21.71)

37(22.16)

125(17.56)

99(30.65)

 

Size (cm)

    

< 0.001

  ≤ 1 cm

355(29.53)

96(57.49)

245(34.41)

14(4.33)

 

  ≤ 2 cm

498(41.43)

57(34.13)

366(51.4)

75(23.22)

 

  > 2 cm

349(29.03)

14(8.38)

101(14.19)

234(72.45)

 

Histology and invasion depth

    

0.015

 AA

753(62.65)

124(74.25)

428(60.11)

201(62.23)

 

 pTis

238(19.8)

29(17.37)

148(20.79)

61(18.89)

 

 pT1a

131(10.9)

6(3.59)

86(12.08)

39(12.07)

 

 pT1b

80(6.66)

8(4.79)

50(7.02)

22(6.81)

 

LVI

    

0.455

 No

1171(97.42)

165(98.8)

693(97.33)

313(96.9)

 

 Yes

31(2.58)

2(1.2)

19(2.67)

10(3.1)

 

En bloc resection

    

0.012

 Yes

1099(91.43)

159(95.21)

637(89.47)

303(93.81)

 

 No

103(8.57)

8(4.79)

75(10.53)

20(6.19)

 

Positive HM

    

0.682

 No

1167(97.09)

164(98.2)

689(96.77)

314(97.21)

 

 Yes

35(2.91)

3(1.8)

23(3.23)

9(2.79)

 

Positive VM

    

0.582

 No

1156(96.17)

163(97.6)

683(95.93)

310(95.98)

 

 Yes

46(3.83)

4(2.4)

29(4.07)

13(4.02)

 
  1. HSP Hot snare polypectomy, EMR Endoscopic mucosal resection, ESD Endoscopic submucosal dissection, IQR Interquartile range, AA Advanced adenoma, ECRC Early colorectal cancer, pTis Intramucosal, pT1a Submucosal invasion with less than 1000 um from the muscularis mucosae, pT1b Submucosal invasion with 1000 um more from muscularis mucosae, LVI Lymphovascular invasion, HM Horizontal margin, VM Vertical margin