The key is in the large discohesive cells with necrosis. Prelim diagnosis (after IHC below) is Diffuse Large B cell Lymphoma. Hempath ordered CD10 BCL6 MUM1 (for germinal center/non-germinal center) and BCL2 and c-myc for Double Hit status.
CK, SOX10, HMB45, chomo/synapto neg