Table 2.

Clinicopathological summary of the cases

	UC-associated	Sporadic	P value
Site
Left side	12	41	0.068
Right side	3	34
Histological type
Well differentiated	6	30
Moderately differentiated	4	37
Poorly differentiated (including signet-ring cell carcinoma)	5	8
Depth of invasion
Up to MP	2	12	0.79
SS/A or deeper	13	63
Lymph node metastasis
Negative	5	31	0.56
Positive	10	44
Stage
I	2	9	0.14
II	3	22
III	9	44
IV	1	0

UC-ulcerative colitis; MP-muscularis propria; SS-subserosa; A-adventitia.