Figure 1

B-cell lymphoma, unclassifiable, with features intermediate between diffuse large B-cell lymphoma (DLBCL) and classical Hodgkin lymphoma (CHL), pattern 1 (case 1): histological sections show large atypical cells with Reed–Sternberg-like and centroblastic cells in a polymorphous background with eosinophils and punctate necrosis (a and b). Immunohistological studies show that the large atypical cells express CD45 (c), CD20 (d), CD30 (e) and CD15 (f). Original magnifications: × 200, × 400.