PR J. L. KEMENY, ISM / SCIENCE PHOTO LIBRARY PR J. L. KEMENY, ISM / SCIENCE PHOTO LIBRARY
Colon cancer. Light micrograph of a section through the colon of a patient with colon cancer. This is an adenocarcinoma (centre), a malignant (cancerous) tumour that arises from glandular tissue in the lining of the colon (large intestine). Symptoms of colon cancer include rectal bleeding and abdominal pain. Treatment is with surgery to remove the affected area. Colon cancer is one of the most common cancers in the Western world. It is a disease of late and middle age. Risk factors include diet high in animal fat and low in fibre and a sedentary lifestyle. Magnification: x5 when printed at 10 centimetres tall.
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