BCL6 and neoplasm: Immunohistochemical staining of the tumor cells showed positivity for CD 20 (Figure 6), CD79a (Figure 7), PAX 5 (Figure 8), bcl-2, and bcl-6+ consistent with DLBCL and CD 15 (Figure 9) and CD 30 (Figure 10) consistent with CHL and negativity for CD3, CD5, CD10, ALK-1 protein, EMA, and Epstein Barr Virus (EBV) (EBER by ISH-EBV- (Epstein-Bar Virus-) Encoded RNA (Ribonucleic Acid) In Situ Hybridization).