| colourectal | Relating to the colon and rectum, or to the entire large bowel. (05 Mar 2000) |
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| colourectal neoplasms | Cancer of the colon and rectum. The most frequent malignant tumour in the united states. Aetiological factors which increase the risk of colourectal cancer include chronic ulcerative colitis, familial polyposis of the colon, exposure to asbestos, irradiation of the cervix. (12 Dec 1998) |
| colourectal neoplasms, hereditary nonpolyposis | A syndrome characterised by autosomal dominant inheritance, a low mean age (41 years) for occurrence of colon cancer, and a marked increase in the proportion of tumours in the proximal colon. (12 Dec 1998) |
| colourectal surgery | A surgical specialty concerned with the diagnosis and treatment of disorders and abnormalities of the colon, rectum, and anal canal. (12 Dec 1998) |