Polymorphic pattern of EBV⁺ DLBCL-NOS. (A-B) The lymph node architecture is effaced by a proliferation of malignant Hodgkin/Reed-Sternberg-like cells embedded in an inflammatory background. Neoplastic cells express EBER (C) and are positive for CD20 (D), CD30 (E), and PD-L1 (F). Original magnification ×200 (A) and ×400 (B-F).