to assess the role in breast-cancer aetiology of oestrogenic substances apparently produced by intestinal bacteria from faecal residues associated with a high-fat diet and other absorbable and possibly carcinogenic colonic substances , cancer incidence and mortality were studied in 2425 women in the uk who had previously had total colectomy and terminal ileostomy , mostly for ulcerative colitis for crohn 's disease .
C0009368
colonic
C0192871
total colectomy