MEDIMAGE / SCIENCE PHOTO LIBRARY MEDIMAGE / SCIENCE PHOTO LIBRARY
Cancer of the rectum. Gross specimen showing adenocarcinoma (brown, left) of the rectum. Adenocarcinoma is a type of colorectal cancer arising from glandular epithelial tissue. It accounts for about 90-95% of all colorectal cancers. Adenocarcinomas will have developed from adenomas, the benign version of the cancerous tumour. Here both can be seen, adenocarcinoma alongside villous adenoma, the rarest type of adenoma, with a ruffled, frilly structure.
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