Abstract
BackgroundHigh endothelial venules (HEVs) are specialized microvessels for recruiting naïve T cells and B cells from the circulation into secondary lymphoid organs. Its involvement in esophageal squamous cell carcinoma (ESCC) is still unknown. This study mainly investigated the possible presence of HEVs in ESCC and explore its relationship with prognosis. MethodFormalin fixed paraffin embedded (FFPE) tissue samples of 52 ESCC patients were stained with immunohistochemically (IHC) to assess the association of HEVs with histological and clinical factors by immunohistochemistry. Furthermore, multiplexed immunofluorescence was performed to explore the microenvironment around HEVs. ResultHEVs was widely present in ESCC and was significantly associated with better overall survival (OS). In addition, multiplexed immunofluorescence imaging demonstrated that HEVs is mainly present in the tertiary lymphoid structures (TLS) of the tumor and is surrounded by a large number of lymphocyte cells. ConclusionHEVs represent a better prognostic factor in ESCC.
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