8263/0 Tubulovillous adenoma, NOS


Synonyms

Villoglandular adenoma
Tubulo-papillary adenoma

Related terms

Papillotubular adenoma

Definitions

Colon and rectum
ICD-O-3 topography code: C18-C20

Tubulovillous adenomas are defined by a mixture of tubular and villous structures with arbitrary percentages in different studies, typically between 25% and 75% villous component1
 
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



.



Gallbladder and extrahepatic biliary tract
ICD-O-3 topography code: C23-C24.0

By arbitrary definition, tubulovillous adenomas contain more than 25% of both tubular and villous patterns.



Small intestine
ICD-O-3 topography code: C17

By arbitrary definition, tubulovillous adenomas contain more than 25% of both tubular and villous
patterns
2
 
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



.



Vagina
ICD-O-3 topography code: C52





Skin
ICD-O-3 topography code: C44





Region of the ampulla of Vater
ICD-O-3 topography code: C24.1

By arbitrary definition, tubulovillous adenomas contain more than 25% of both tubular and villous
patterns
3
 
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



.