Morphology and immunophenotype of CD30⁺ de novo DLBCL. (A-D) A case of CD30⁺ DLBCL of the GCB subtype (panel A, H&E; panel B, CD30; panel C, CD10; and panel D, EBER in situ hybridization). (E-H) A case of CD30⁺ DLBCL of the ABC subtype (panel E, H&E; panel F, CD30; panel G, CD10; and panel H, MUM1). (I-L) A case of CD30⁺EBV⁺ DLBCL (panel I, H&E; panel J, CD30; panel K, CD10; and panel L, EBER in situ hybridization). Original magnification ×1000 (A,E,I) and ×500 (all others).