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. 2014 Mar 31;47(2):192–196. doi: 10.5946/ce.2014.47.2.192

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Copyright © 2014 Korean Society of Gastrointestinal Endoscopy

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 2 — Histologic findings. (A) Lymphoma cells, with small to medium-sized nucleoli with pale cytoplasm, infiltrated the reactive follicles. The epithelium was invaded and destroyed by discrete aggregates of lymphoma cells (arrows) (H&E stain, ×200). (B) Immunohistochemical staining revealed lymphoma cells with a diffuse immunoreaction for CD20 (Immunostain for CD20, ×200). (C) Immunohistochemical staining revealed that lymphoma cells were not immunoreactive for cyclin D1 (Immunostain for cyclin D1, ×200).