Ampulla of Vater
Hyperplastic polyp

Author: Hanni Gulwani, M.D. (see Authors page)

Revised: 22 January 2016, last major update December 2012

Copyright: (c) 2003-2016,, Inc.

PubMed Search: Hyperplastic polyp
Definition / General
  • Similar to serrated polyps in colorectum (Hum Pathol 2011;42:1953)
  • Rare, occur in second part of duodenum and ampulla
  • Usually incidentally detected, mean age 50 yrs
  • Uncertain malignant potential
Positive Stains
  • MUC6 expression in crypt bases