Editorial
Premalignant lesions of the extrahepatic biliary tract. A territory to be explored hand in hand with cholangioscopy
4-6
Carlos Dolz Abadía,
The biliary mucosa, both intrahepatic and extrahepatic, is lined by a single layer of columnar cells with oval nuclei near the base and a slightly eosinophilic cytoplasm. Although normal biliary ducts have no goblet cells, there are periductal mucous glands lined by mucus-producing cuboidal cells, with mucin from these glands draining to the lumen of bile ducts.
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