Endoscopic treatment of large colorectal lesions: A retrospective analysis of efficacy and safety

Table 2 Patients’ lesions and perioperative period, n (%)

Lesions and perioperative period	Cases
Lesion site
Cecum	6 (5.9)
Ascending colon	14 (13.7)
Transverse colon	12 (11.8)
Descending colon	3 (2.9)
Sigmoid colon	24 (23.5)
Rectum	43 (42.2)
Morphology of lesions
Polyp-like	26 (25.5)
LST	72 (70.6)
Mucosal bulge	5 (4.9)
Histology
Polyp	2 (2)
Low-grade intraepithelial neoplasia	1 (1)
High-grade intraepithelial neoplasia	28 (27.5)
Adenoma	4 (3.9)
Lipoma	4 (3.9)
Carcinoma	62 (60.8)
Else	1 (1)
Type of excision
Complete resection (R0)	98 (96.1)
En bloc resection	100 (98)
Fractional resection	2 (2)
Horizontal cutting edge
Positive	2 (2)
Negatives	100 (98)
Vertical cutting edge
Positive	0 (0)
Negatives	102 (100)
Placement of intestinal decompression tubes
Yes	46 (45.1)
No	56 (54.9)
Perioperative complications
PEECS	24 (23.5)
Postoperative bleeding	2 (2)
Perforation	0 (0)
Malaise	10 (9.8)
Bloody stool	2 (2)

LST: Laterally spreading tumors; PEECS: Post-endoscopic submucosal dissection electrocoagulation syndrome.