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WHO Classification of Tumours
Tubulovillous adenoma, NOS
Colon and rectum


Tubulovillous adenomas are defined by a mixture of tubular and villous structures with arbitrary percentages in different studies, typically between 25% and 75% villous component
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Bosman FT, Carneiro F, Hruban RH, Theise ND (Eds.)
WHO Classification of Tumours of the Digestive System.
4th Edition
International Agency for Research on Cancer: Lyon 2010