Objective: The objective of the present study was to compare the clinicopathological significance between mucinous carcinoma and nonmucinous adenocarcinoma.
Material and Method: Patients with carcinoma of the colon and rectum who had the first operation in the Department of Surgery, Phramongkutklao Hospital between 1999 and 2004 were included in the present study. Patients were divided into two groups: nonmucinous group and mucinous group. Clinicopathological data of these patients were recorded.
Results: Four hundred and nine patients were included in the present study. Forty four (10.7%) were mucinous carcinoma. There was no difference in sex distribution, location of tumors, depth of invasion, lymph node involvement, distant metastasis, TNM stage, lymphatic invasion, vascular invasion, perineural invasion, peritoneal seeding, curability, positive microscopic margin, and adhesion to the surrounding structure.
Conclusion: Colorectal mucinous carcinoma had no clinicopathological difference from nonmucinous adenocarcinoma of colon and rectum.

Keywords: Mucinous carcinoma, Adenocarcinoma, Colon, Rectum