Rectal Cancer Treatment (Professional) (cont.)
IN THIS ARTICLE
Cellular Classification and Pathology of Rectal Cancer
The World Health Organization (WHO) classification of tumors of the colon and rectum include the following:
Intraepithelial neoplasia (dysplasia) associated with chronic inflammatory diseases
Carcinoid (well-differentiated neuroendocrine neoplasm)
Adenocarcinomas account for the vast majority of rectal cancers. Other histologic types of colorectal cancer account for an estimated 2% to 5% of colorectal tumors.
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