Abstract
The term of carcinoid tumor, first introduced by a pathologist in 1907 to designate tumor thought to be benign that looks like a carcinoma, refers in fact to very different entities. It should no longer be used. The WHO recommendations are to use the term of neuroendocrine tumor (NET) in association with the seat and degree of differentiation of the tumor. Carcinoid tumor usually refers to a well-differentiated NET of the appendix or the small bowel embryologically arising from the midgut most often localized in the ileum. Other locations of NET are the pancreas, the lung, the stomach, and, more rarely, the rectum, the esophagus, and the hypopharynx.
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Paolantonio, P., Dromain, C. (2014). C. In: Imaging of Small Bowel, Colon and Rectum. A-Z Notes in Radiological Practice and Reporting. Springer, Milano. https://doi.org/10.1007/978-88-470-5489-9_3
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DOI: https://doi.org/10.1007/978-88-470-5489-9_3
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