Abnormal gallbladder morphology Rokitansky-Aschoff gallbladder sinuses 2024-03-07T10:29:04Z 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). Adenomyomatosis of the gallbladder Epithelial invaginations of the gallbladder forming cystic pockets