Cite this page: Gulwani H. Papillary hyperplasia. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/gallbladderpaphyperplasia.html. Accessed July 5th, 2022.
Definition / general
- Usually secondary to inflammatory disorders (chronic cholecystitis [5 - 20%] or cholelithiasis, adenomyomatous hyperplasia, primary sclerosing cholangitis, ulcerative colitis), cholesterolosis (up to 100%) or anomalous arrangement of pancreaticobiliary duct (40 - 90%)
- Diffuse or focal
Microscopic (histologic) description
- Single layer of columnar epithelium in papillary mucosal folds, may be villiform
- Basal nuclei, no atypia