Assessment of colon polyp morphology: Is education effective?

Table 1 Characteristics of colon polyps in the exam n (%)

	Number
Size
≤ 5 mm	14 (23.3)
5 < and ≤ 10 mm	32 (53.4)
≥ 10 mm	14 (23.3)
Type
Ip	14 (23.3)
Isp	9 (15.0)
Is	19 (31.7)
IIa	16 (26.6)
IIb	0 (0.0)
IIc	1 (1.7)
III	1 (1.7)
Location
Rectum	5 (8.3)
Sigmoid colon	24 (40.0)
Descending colon	5 (8.3)
Transverse colon	13 (21.7)
Ascending colon	11 (18.4)
Cecum	2 (3.3)
Histology
TA with LGD	32 (53.3)
TA with HGD	3 (5.0)
VTA with LGD	2 (3.3)
VTA with HGD	1 (1.7)
Adenocarcinoma	4 (6.7)
Chronic colitis	13 (21.7)
Hyperplastic polyp	3 (5.0)
Inflammatory polyp	2 (3.3)

TA: Tubular adenoma; LGD: Low grade dysplasia; HGD: High grade dysplasia; VTA: Villotubular adenoma.

Table 2 Difference in assessment of polyp morphology per polyp n (%)

	Pre-test	Post-test	Follow-up test
Number of polyps
One category per one question
Ip	9 (15.0)	8 (13.3)	12 (20.0)
Isp	6 (10.0)	3 (5.0)	0 (0.0)
Is	0 (0.0)	6 (10.0)	3 (5.0)
IIa	0 (0.0)	11 (18.3)	6 (10.0)
Total	15 (25.0)	28 (46.7)	21 (35.0)
Two categories per one question
Ip-Isp	6 (10.0)	8 (13.3)	5 (8.3)
Isp-Is	7 (11.7)	7 (11.7)	8 (13.3)
Is-IIa	24 (40.0)	12 (20.0)	20 (33.3)
IIa-IIc	0 (0.0)	1 (1.7)	1 (1.7)
IIc-III	1 (1.7)	1 (1.7)	1 (1.7)
Total	38 (63.3)	29 (48.3)	35 (58.3)
Three categories per one question
Ip-Isp-Is	1 (1.7)	1 (1.7)	4 (6.7)
Isp-Is-IIa	5 (8.3)	1 (1.7)	0 (0.0)
Is-IIa-IIc	1 (1.7)	0 (0.0)	0 (0.0)
IIa-IIb-IIc	0 (0.0)	1 (1.7)	0 (0.0)
Total	7 (11.7)	3 (5.0)	4 (6.7)