FRANCOIS L'HOPITAL, ISM / SCIENCE PHOTO LIBRARY FRANCOIS L'HOPITAL, ISM / SCIENCE PHOTO LIBRARY
Rectitis by irradiation, endoscope view. The reddened areas are where radiation (such as used in radiotherapy) has inflamed the tissues of the rectum. Inflammation of the rectum is known as rectitis. The rectum is the final part of the digestive system, used to store faeces prior to removal via the anus.
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