Retrospective Study
Copyright ©The Author(s) 2021.
World J Gastrointest Oncol. Mar 15, 2021; 13(3): 174-184
Published online Mar 15, 2021. doi: 10.4251/wjgo.v13.i3.174
Table 1 Comparison of baseline clinicopathologic characteristics between grasping forceps assisted endoscopic resection and endoscopic submucosal dissection groups

GF-ER
ESD
P value
Age, yr
Median (IQR)68.0 (54-80)75.0 (66-82)0.28
Sex, n (%)
Male6 (75.0)45 (71.4)1
Female2 (25.0)18 (28.6)
Morphology, n (%)
Flat or depressed5 (55.6)46 (73.0)0.43
Elevated4 (44.4)17 (27.0)
Ulceration, n (%)
Presence0 (0)4 (6.3)1
Absence9 (100)59 (93.7)
Tumor size, mm
Median (IQR)7 (4-11)16 (9-22)< 0.01
Tumor depth, n (%)
Mucosa6 (66.7)49 (77.8)0.43
Submucosa3 (33.3)14 (22.2)
Histology, n (%)
Differentiated9 (100)49 (77.8)0.31
Undifferentiated0 (0)14 (22.2)
Table 2 Comparison of baseline clinicopathologic characteristics between grasping forceps assisted endoscopic resection and endoscopic submucosal dissection groups for small lesions (defined as ≤ 10 mm in diameter)

GF-ER
ESD
P value
Age, yr
Median (IQR)67.5 (54-80)75.5 (66-79)0.39
Sex, n
Male4 (66.7)16 (80.0)0.60
Female2 (33.3)4 (20.0)
Morphology, n (%)
Flat or depressed4 (57.1)16 (80.0)0.33
Elevated3 (42.9)4 (20.0)
Ulceration, n (%)
Presence0 (0)1 (5.0)1.0
Absence7 (100)19 (95.0)
Tumor size, mm
Median (IQR)6.0 (4-8)6.5 (5-9)0.45
Tumor depth, n (%)
Mucosa4 (57.1)18 (90.0)0.09
Submucosa3 (42.9)2 (10.0)
Histology, n (%)
Differentiated7 (100)17 (85.0)1.0
Undifferentiated0 (0)3 (15.0)
Table 3 Comparison of treatment outcomes between grasping forceps assisted endoscopic resection and endoscopic submucosal dissection groups

GF-ER
ESD
P value
Procedure time, min
Median (IQR)4.0 (3.0-5.0)55.0 (30-105)< 0.01
En bloc resection, n (%)9 (100)63 (100)1.0
R0 resection, n (%)9 (100)62 (98.4)1.0
Curative resection, n (%)9 (100)55 (87.3)0.54
Perforation, n (%)0 (0)5 (8.0)1.0
Delayed bleeding, n (%)0 (0)1 (1.6)1.0
Table 4 Comparison of treatment outcomes for small lesions (defined as ≤ 10 mm in diameter) between grasping forceps assisted endoscopic resection and endoscopic submucosal dissection groups

GF-ER
ESD
P value
Procedure time, min
Median (IQR)4.0 (3.0-5.0)35.0 (25-75)< 0.01
En bloc resection, n (%)7 (100)20 (100)1.0
R0 resection, n (%)7 (100)20 (100)1.0
Curative resection, n (%)7 (100)19 (95.0)1.0
Perforation, n (%)0 (0)1 (5.0)1.0
Delayed bleeding, n (%)0 (0)0 (0)1.0