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| This neoplasm is characterized by the typical loose tissue of the embryonal variant. It is covered by atrophic biliary epithelium and forms the mucosal surface of a duct. Note the subepithelial hypercellular band of tumour tissue, the “cambium.” | ||
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Contributed by Dr Arthur Zimmermann
Institute of Pathology of the University of Bern Bern SWITZERLAND © Dr Arthur Zimmermann |
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