“…d Lymphoma cells are positive for CD20 (brown), but negative for SMA (dark blue), as evaluated by double-immunostaining for SMA and CD20 chemical examinations [2]. The majority of PHL cases is DLBCL [2,15,20]. Other histologies have been described in less than 5% of cases [15,18,20] and include diffuse lymphoma of the mucosa-associated lymphoid tissue (MALT) type [2,17], mixed small and large cell, lymphoblastic, diffuse immunoblastic, diffuse histiocytic, mantle cell, and small noncleaved or Burkitt lymphoma.…”