Pathological features and risk factors for submucosal infiltration of colorectal lateral spreading tumors

Table 1 Clinical and pathological characteristics of different endoscopic subtypes of lateral developing tumors at 456 locations

Project	LST-NG-F (n = 109)	LST-NG-PD (n = 58)	IST-G H (n = 27)	LST GM (n = 262)
Lesion size
1-2 cm	93	45	15	117
> 2-3 cm	13	8	5	70
> 3-4 cm	1	5	2	30
> 4-5 cm	2	0	2	26
> 5 cm	0	0	3	19
Location of lesion
Rectum	8	5	3	99
Sigmoid colon	10	8	0	22
Descending colon	10	7	1	8
Transverse colon	48	21	4	36
Ascending colon	28	13	9	62
Cecum	5	4	10	35
Pathologic diagnosis
LGIN	62	12	8	37
HGIEN	44	24	14	139
Mucosal layer cancer	2	12	4	64
Submucosal carcinoma	1	10		22

LST: Lateral developing tumors.