during the routine histological examination of 2400 aged mice from lifespan carcinogenicity studies a low prevalence of glandular metaplasia of the gall bladder and of the intra-hepatic bile ducts ( all associated with cholelithiasis ) , cholecystitis , cholangitis , papillomatous hyperplasia , papilloma , intra-mural cysts , and focal epithelial ulceration was found .
C0016976
gall
C0008350
cholelithiasis