Supplementary Material for: Diffuse Large B-cell Lymphoma with Aberrant Coexpression of CD5 and CD8 T-cell Markers

Introduction: The expression of T-cell associated antigens on diffuse large B-cell lymphoma is uncommon. The co-expression of ≥ 2 T-cell-associated antigens on diffuse large B-cell lymphoma is even rarer. This has been reported in the literature only a few times, most commonly co-expression of either CD5 or CD8 and a second, different T-cell marker. Case Presentation: This case report features a patient who presented with a rapidly evolving head and neck mass that displayed coexpression of CD5 and CD8. Conclusion: In this case report, we present the first case to our knowledge of DLBCL with coexpression of only CD5 and CD8.