Potential Factors Predicting Histopathologically Upgrade Discrepancies between Endoscopic Forceps Biopsy of the Colorectal Low-Grade Intraepithelial Neoplasia and Endoscopic Resection Specimens

Table 1

Baseline characteristics of 918 patients with colorectal LGIN diagnosed by EFB.

Baseline characteristics	Value
Median age, (IQR)	58 (50, 66)
Gender, (%)
Male	586 (63.8)
Female	332 (36.2)
Lack of standardization of EFB number, (%)
Yes	319 (34.7)
No	599 (65.3)
Shape pattern of the target adenoma, (%)
Yamada I+II	428 (46.6)
Yamada III+IV	490 (53.4)
LST	42 (4.6)
Location, (%)
Proximal	197 (21.5)
Distal	721 (78.5)
Lobulated shape, (%)	192 (20.9)
Erythema, (%)	461 (50.2)
Erosion, (%)	102 (11.1)
Surface unevenness, (%)	149 (16.2)
Number of colorectal polyps
Single	553 (60.2)
Multiple	366 (39.8)
Median largest diameter of the target, cm (IQR)	1.5 (1, 2)
Largest diameter of the target adenoma, (%)
<1.0 cm	92 (10)
1.0-1.9 cm	487 (53.1)
2.0-2.9 cm	233 (25.4)
≥3.0 cm	106 (11.5)

LGIN: low-grade intraepithelial neoplasia; IQR: interquartile range; EFB: endoscopic fragment biopsy; LST: laterally spreading tumor.