Table 1.

Clinicopathology data for the colorectal adenomas and intramucosal adenocarcinomas (IMAs)

	Adenomas	IMAs
Total	55	30
Male	36	21
Female	19	9
Age (years)a	67.0 (42–90)	66.5 (48–88)
Locus
Right (C, A, T)	20 (36.4%)	9 (30.0%)
Left (D, S, R)	35 (63.6%)	21 (70.0%)
Size (mm)a	14.0 (7-53)	15.0 (9-41)
Macroscopic type
Is	3 (5.5%)	6 (20.0%)
Isp	21 (38.2%)	8 (26.7%)
Ip	24 (43.6%)	3 (10.0%)
IIa	1 (1.8%)	1 (3.3%)
IIc	0	5 (16.7%)
LST	6 (10.9%)	7 (23.3%)
Adenoma component
TA	37 (67.3%)
TVA	18 (32.7%)
Tumour grade
Low	35 (63.6%)
High	20 (36.4%)
Differentiation
tub1		21 (70.0%)
tub2		9 (30.0%)

C cecum, A ascending colon, T transverse colon, D descending colon, S sigmoid colon, R rectum, LST laterally spreading tumour, TA tubular adenoma, tub1 well-differentiated adenocarcinoma, tub2 moderately differentiated adenocarcinoma, TVA tubulovillous adenoma

^aThe median is given, with the range in parentheses