Region of the ampulla of Vater
Intestinal-type adenomas are the most common preinvasive neoplastic lesions of the ampulla of Vater. Intestinal-type adenomas are benign epithelial neoplasms exhibiting histological patterns/subtypes that resemble adenomas of the small and large intestines
Bosman FT, Carneiro F, Hruban RH, Theise ND (Eds.)
WHO Classification of Tumours of the Digestive System.
International Agency for Research on Cancer: Lyon 2010
> Histological subtypes