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Pathological findings in right inguinal lymph node. A) Hematoxylin and Eosin (H&E) staining (×40), B) H&E staining (×400), C) CD20 (×200), D) CD10 (×200), E) BCL-6 (×200), F) MUM-1 (×200). Diffuse proliferation of large atypical lymphocytes positive for CD20, CD10, Bcl-6 and MUM-1 immunohistochemically.
