Table 3. Features of recurrence in patients with endoscopic resection of colonic polyps by EMR/ESD in patients with IBD.

Characteristics	Recurrence 1 (20)	Recurrence 2 (9)	Recurrence 3 (3)
Index polyp size (mm)
< 20	6 (30.0 %)	2 (22.2 %)	0 (0.0 %)
≥ 20	14 (70.0 %)	7 (77.8 %)	3 (100.0 %)
Median size of recurrent polyp (mm)	6.5	5	3.5
Resection technique of index polyp
ESD only	1
EMR only	19
ESD + EMR	0
Location of polyps, n (%)			Top of Form
Ascending colon	10 (50 %)
Transverse colon	4 (20 %)
Sigmoid colon	4 (20 %)
Rectum	2 (10 %)
Morphology (Paris classification), n (%)
Polypoid sessile	15 (75.0 %)	7 (77.8 %)	3 (100.0 %)
Non polypoid flat	5 (25.0 %)	2 (22.2 %)	0 (0.0 %)
Resectioning technique; polyps ≥ 20 mm, n (%)
En bloc	13 (92.9 %)	1
Piecemeal	1 (7.1 %)
Type of snare used, n (%)
Standard/small	10 (83.3 %)	5
Histolock	1 (9.2 %)
Spiral	1 (9.2 %)
Additional therapy, n (%)
APC	5 (16.7 %)	3 (23.1 %)	1 (25 %)
Hot biopsy	2 (6.7 %)
Hot snare	10 (33.3 %)	4 (30.8 %)
Cold biopsy	5 (16.7 %)	4 (30.8 %)	2 (50 %)
Cold snare	8 (26.7 %)	2 (15.4 %)	1 (25 %)
Polyps needing clips used, n (%)	5
Histology, n (%)
Tubular adenoma, low grade dysplasia	9 (45 %)	6 (66.6 %)	1 (33 %)
Tubulovillous adenoma, low grade dysplasia	5 (25 %)
Serrated	5 (25 %)	1 (11.1 %)	1 (33 %)
Adenocarcinoma
Hyperplastic	1 (2.5 %)	2 (22.2 %)	1 (33 %)

EMR, endoscopic mucosal resection; ESD, endoscopic submucosal dissection; IBD, inflammatory bowel disease; APC, adenomatous polyposis coli