Rectal polyp surface, SEM

Rectal polyp surface, SEM

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Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Caption: Rectal polyp. Coloured scanning electron micrograph (SEM) of the surface of a rectal polyp. The rectum is the end portion of the intestines. Polyps are small benign (non-cancerous) growths that arise from the mucous lining of the intestines. The surface of the polyp, the mucosa, consists of epithelial cells. The cause of most polyps is not known, although a diet high in animal fat and red meat and low in fibre, may be a risk factor. Some polyps are caused by diseases, such as familial polyposis or irritable bowel syndrome. Polyps should be surgically removed as they may become malignant (cancerous).

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Keywords: benign, cells, coloured, condition, disease, disorder, epithelial cell, false-coloured, growth, healthcare, human body, many, medical, medicine, mucosa, multiple, non-cancerous, orange, polyp, rectal, rectum, scanning electron micrograph, scanning electron microscope, sem, surface

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