label: Rokitansky-Aschoff gallbladder sinuses
label_lc: rokitansky-aschoff gallbladder sinuses
description: "Localized or diffuse epithelial proliferation with hypertrophy of the muscularis layer and invagination of the mucosa through the muscularis, forming intramural diverticula (i.e., small, bulging pouches in the wall of the gallbladder)."