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. 2013 Sep 28;11:244. doi: 10.1186/1477-7819-11-244

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Copyright © 2013 Jia et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Histological findings and immunohistochemical expression in UESL. (A) H&E stained sections showing the tumor cells as spindle- or polygonal-shaped with fascicular arrangement (yellow arrows). In addition, multinucleate giant cells (blue arrows), remnants of small bile ducts (black arrows), and chronic inflammatory cells infiltration are shown in the tumor tissue (magnification: 100×). (B, C) Immunohistochemistry analysis of UESL showing positivity for (B) vimentin and (C) AAT (magnification: 200×). In (B), black arrows indicate the coutnerstained cell nuclei. (D) Cells containing eosinophilic cytoplasmic granules staining positive for PAS are shown (magnification: 400×).