Fig. 3From: Epstein–Barr virus-associated inflammatory pseudotumor variant of follicular dendritic cell sarcoma of the liver: a case report and review of the literatureEBER–ISH and immunohistochemistry for EBV-associated FDCS (scale bars = 25 µm). a Lesion is composed of atypical spindle cells admixed with infiltrating inflammatory cells on hematoxylin and eosin staining. b Nucleus of the spindle cells is diffusely positive for EBER–ISH. c Cytoplasmic positivity for CD23. d Double staining for CD23 immunohistochemistry (brown) and EBER–ISH (red) revealing that EBER–ISH positive cells show CD23 immunoreactive cytoplasm. EBER: Epstein–Barr virus enucleated RNA; ISH: in-situ hybridization; FDCS: follicular dendritic cell sarcomaBack to article page