Overall the mostimportant and relevant relations of the colon are to the mesenteric attachments, urinary bladder and stomach. 

The rectal relations include the sacrum, and coccyx which lie posteriorly, while anteriorly in the male the fundus of the bladder, the ureters, ductus deferentia, seminal vesicles and prostate lie.  In the female the cul de sac lies anteriorly followed by the lower uterine segment cervix and vagina.

Relation to the Colon and Duodenum

37957c01.8s gallbladder position relations colon duodenum abdomen normal anatomy CTscan Courtesy Ashley Davidoff MD copyright 2008