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Histopathology
Article
License: implied-oa
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Histopathology
Article . 2021 . Peer-reviewed
License: Wiley Online Library User Agreement
Data sources: Crossref
Histopathology
Article . 2022
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Lymphoepithelioma‐like neoplasm of the biliary tract with ‘probable low malignant potential’

Authors: Binny Khandakar; Jun‐Ru Liu; Swan Thung; Ying Li; Hyungjin Rhee; Alexander C Kagen; Tommy Sun‐Wing Tong; +3 Authors

Lymphoepithelioma‐like neoplasm of the biliary tract with ‘probable low malignant potential’

Abstract

AimsLymphoepithelioma‐like carcinomas (LELCs) are uncommon epithelial cancers characteristically showing two distinct components consisting of malignant epithelial cells and prominent dense lymphoid infiltrate. Hepatic LELCs consist of two types, the lymphoepithelioma‐like hepatocellular carcinoma and lymphoepithelioma‐like cholangiocarcinoma (LEL‐CCA), with the latter being strongly associated with Epstein–Barr virus (EBV).Methods and resultsWe present a series of three cases of intrahepatic biliary EBV‐associated LEL tumours in which the biliary epithelial component showed a distinctly benign appearance, instead of the usual malignant epithelial features of a typical CCA or EBV‐associated LEL‐CCA. In the lesions, the biliary epithelium showed interconnecting glands or cords of cells. All had a very low proliferation (Ki‐67) index. Immunohistochemistry for IDH1 and TP53 performed on two cases was negative and molecular tests for EGFR and KRAS gene mutations performed on one were negative. Prognosis was very good in all three cases, with patients alive with no evidence of disease 24–62 months after surgery. Intriguingly, all three cases had co‐infection of HBV and EBV. These cases are also discussed in the context of the 63 cases of LEL‐CCA available in the literature, with a focus on epidemiology, clinicopathological features and potential research interests.ConclusionsBased on the distinct clinicopathological features and unique survival benefits, we believe these tumours represent the benign end of the spectrum of EBV‐associated lymphoepithelial biliary carcinomas. Whether these tumours require a revision of the current nomenclature to ‘lymphoepithelioma‐like neoplasm of the biliary tract with probable low malignant potential’ will require more detailed analysis with larger case‐series.

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Keywords

Adult, Male, Epstein-Barr Virus Infections, Carcinoma, Hepatocellular, Carcinoma, Liver Neoplasms, 610, Cholangiocarcinoma, Bile Duct Neoplasms, immunohistochemistry, 616, lymphoepithelioma-like cholangiocarcinoma, Epstein-Barr virus, Humans, Female, lymphoepithelioma-like lesion, molecular, Aged

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
14
Top 10%
Average
Top 10%
Green
hybrid
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