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  • epithelial
  • citation needed] Cholesterolosis is characterized by an outgrowth of the mucosal lining of the gallbladder into fingerlike projections due to the excessive accumulation of cholesterol and triglycerides within macrophages in the epithelial lining. (wikipedia.org)
  • Polypoid
  • The main types of polypoid growths of the gallbladder include cholesterol polyp/cholesterosis, cholesterosis with fibrous dysplasia of gallbladder, adenomyomatosis, hyperplastic cholecystosis, and adenocarcinoma. (wikipedia.org)