Efficacy, risk factors and complications of endoscopic polypectomy: Ten year experience at a single center

Table 2 Characteristics of polyps resected according to size

	Total	Group 1	Group 2	Group 3	Group 4
Number of polypectomy	1354	907	287	129	31
Size (mm)	9.45 ± 9.56	4.8 ± 2.18	11.8 ± 2.6	27.7 ± 5.8	46.8 ± 13.02
Range	(1-100)	(1-10)	(11-19)	(20-39)	(40-100)
Shape
Pedunculated	388 (28.7%)	176 (19.4%)	135 (47%)	70 (54.3%)	7 (22.6%)
Sessile	966 (71.3%)	731 (80.6%)	152 (53%)	59 (45.7%)	24 (77.4%)
Location
Rectal	247 (18.3%)	146 (16.1%)	54 (18.8%)	33 (2.6%)	14(45.4%)
Sigmoid	559 (41.3%)	375 (41.3%)	119 (41.5%)	59 (45.7%)	6 (19.4%)
Left colon	184 (13.6%)	126 (13.9%)	44 (15.3%)	13 (10.1%)	1 (3.2%)
Splenic flexure	24 (1.8%)	14 (1.6%)	8 (2.8%)	1 (0.8%)	1 (3.2%)
Transverse	94 (6.9%)	69 (7.6%)	17 (5.9%)	6 (4.7%)	2 (6.4%)
Hepatic flexure	64 (4.7%)	45 (4.9%)	12 (4.2%)	3 (2.3%)	4 (12.8%)
Right colon	129 (9.5%)	95 (10.5%)	23 (8%)	9 (6.9%)	2 (6.4%)
Caecum	53 (3.9%)	37 (4.1%)	10 (3.5%)	5 (3.9%)	1 (3.2%)
Histology
Tubular adenoma	756 (55.9%)	596 (65.8%)	138 (48.1%)	19 (14.7%)	3 (9.7%)
Villous adenoma	243 (17.9%)	103 (11.3%)	48 (16.7%)	66 (51.2%)	26 (83.9%)
Tubulovillous adenoma	315 (23.3%)	174 (19.2%)	97 (33.8%)	42 (32.6%)	2 (6.4%)
Hyperplastic	40 (2.9%)	34 (3.7%)	4 (1.4%)	2 (1.5%)
Dysplasia
No	125 (9.2%)	117 (12.9%)	6 (2.1%)	2 (1.5%)
LGD	1078 (79.6%)	769 (84.8%)	245 (85.4%)	57 (44.2%)	7 (22.6%)
HGD	123 (9.1%)	17 (1.9%)	32 (11.1%)	51 (39.5%)	23 (74.2%)
Invasive cancer	28 (2.1%)	4 (0.4%)	4 (1.4%)	19 (14.8%)	1 (3.2%)
Technique of polypectomy
Direct snare	1294 (95.6%)	907 (100%)	255 (88.9%)	108 (83.7%)	24 (77.4%)
Mucosectomy	56 (4.1%)		30 (10.4%)	19 (14.8%)	7 (22.6%)
Endoloop	4 (0.3%)		2 (0.7%)	2 (1.5%)
Complication
Bleeding	17 (1.3%)	4 (0.4%)	3 (1.05%)	7 (5.4%)	3 (9.7%)
Perforation	1 (0.07%)		1 (0.35%)
Technique of hemostasis
Injection	13 (76.5%)	4 (100%)	2 (66.7%)	6 (85.7%)	1 (33.3%)
Clips	3 (17.6%)		1 (33.3%)		2 (66.7%)
APC	1 (5.9%)			1 (14.3%)