Abstract

Biliary intraepithelial neoplasia (BilIN) according to modern data is considered as an obligate precancer of the bile ducts. As BILIN progresses, cholangiocarcinoma often develops, characterized by a low five-year survival rate. The aim of this work is to describe the morphological characteristics of BilIN in the epithelium of nonparasitic liver cysts. The material is described after primary and repeated (15) surgical interventions in 99 patients. The morphological manifestations of intraepithelial neoplasia in non-parasitic dysontogenetic liver cysts were studied, their role in the development of liver cholangiocarcinoma was established.

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