FRANCOIS L'HOPITAL / ISM / SCIENCE PHOTO LIBRARY FRANCOIS L'HOPITAL / ISM / SCIENCE PHOTO LIBRARY
Cancer of the rectum, endoscope view. The ulcerated tumour (upper centre) is an adenocarcinoma, a type of colorectal cancer arising from glandular epithelial tissue. Adenocarcinoma accounts for 90-95 per cent of all colorectal cancers and develop from adenomas (adenomatous polyps), the benign version of the cancerous tumour. Certain dietary habits, such as a diet high in fat, appear to be significant risk factors.
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