Systemic Relapse in a Young Adult Patient with Primary CNS Diffuse Large B-Cell Lymphoma

Figure 3

Parietal core brain biopsy of initial PCNSL mass. H and E stain showing neural tissue with infiltration of large round blue cells at 40x (a) and 100x (b). Positive CD20 stain highlighting the infiltration of large round blue cells at 100x (c). Positive MUM1 (d) and negative CD10 stains (e) supporting non-GCB subtype.

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