1.   Colonic adenomas were found in four cases.

2.   The incidence of colonic adenoma and carcinoma has been shown to be age related.

3.   Twelve colonic adenoma biopsy specimens were examined, of which six were tubular adenomas, three were villous adenomas, and three were tubulovillous adenomas.

4.   There have been no extensive studies of xenobiotic metabolising enzyme expression in colonic adenomas.