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Table 2 Baseline characteristics and outcomes of m-EMR group

From: The outcomes of modified endoscopic mucosal resection and endoscopic submucosal dissection for the treatment of rectal neuroendocrine tumors and the value of endoscopic morphology classification in endoscopic resection

 EMR-C(n = 23)EMR-L(n = 26)EMR-CI(n = 30)P value
Patient Characteristics
 Age, y (mean ± SD)51.4 ± 12.648.6 ± 8.651.2 ± 11.90.641
 Sex, male/female12/1119/716/140.226
Tumor Characteristics
 Lesion size, mm (mean ± SD)6.1 ± 1.85.4 ± 2.06.0 ± 1.90.376
 Lesion size group, n (%)   0.955
  < 10 mm21(91.3%)24(92.3%)27(90.0%) 
  ≥ 10 mm2(8.7%)2(7.7%)3(10.0%) 
 Location, n(%)   0.278
  Upper1(4.3%)1(3.9%)4(13.4%) 
  Middle12(52.2%)18(69.2%)13(43.3%) 
  Lower10(43.5%)7(26.9%)13(43.3%) 
 Histopathological grade, n (%)   0.129
  Grade 122(95.7%)23(88.5%)23(76.7%) 
  Grade 21(4.3%)3(11.5%)7(23.3%) 
 Invasion layer, n (%)   0.691
  Mucosal6(26.1%)5(19.2%)5(16.7%) 
  Submucosal17(73.9%)21(80.8%)25(83.3%) 
 Endoscopic morphology, n (%)   0.356
  Ia0(0.0%)2(7.7%)4(13.3%) 
  Ib16(69.6%)20(76.9%)22(76.7%) 
  II6(26.1%)4(15.4%)3 (10.0%) 
  III1(4.3%)0(0.0%)0(0.0%) 
Outcomes
 Procedure time, min (mean ± SD)9.6 ± 4.88.5 ± 5.19.2 ± 3.50.681
 En bloc resection, n (%)23(100%)26(100%)29 (96.7%)0.437
 Complete resection(R0), n (%)19(82.6%)26(100%)27(90.0%)0.098
 Procedure-related adverse events, n (%)1(4.3%)0(0.0%)1(3.3%)0.747
 Operation involving incomplete resection, n (%)1(4.3%)0(0.0%)0(0.0%)0.291
  1. M-EMR modified endoscopic mucosal resection, EMR-C endoscopic mucosal resection with cap, EMR-L endoscopic mucosal resection with ligation, EMR-CI endoscopic mucosal resection with circumferential incision, SD standard deviation
  2. p < 0.05