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. 2023 Feb 22;482(3):551–560. doi: 10.1007/s00428-023-03516-7

Fig. 1.

Fig. 1

Morphological, immunohistochemical, and genetic features of LBCL-IRF4 (case no. 35). a Large B-cell lymphoma with blastoid morphology with medium-sized cells, inconspicuous nucleoli, and scant cytoplasm (original magnification × 200; hematoxylin and eosin stain); b with original magnification × 400: hematoxylin and eosin stain; c original magnification × 400: Giemsa stain. d MUM1. e CD10. f Fluorescence in situ hybridization (FISH) analysis using a break apart probe (BAP) demonstrates an IRF4 break with 1 colocalized signal (yellow arrow) and 1 split signal (green and red arrows) consistent with gene rearrangement. g FISH analysis with a BAP demonstrates an IGH break with 1 colocalized signal (yellow arrow) and 1 split signal (green and red arrows) consistent with gene rearrangement (Fig. 1 was created using Adobe Photoshop Version CS6)