MME and diffuse large B-cell lymphoma: In non-Hodgkin's lymphoma (n = 19), 17 cases were of diffuse large B-cell lymphoma, positive for CD10, CD20 and CD79α (Figures 4A and 4B), one was peripheral T-cell lymphoma, positive for CD3 and CD45RO, and one was NK-cell lymphoma, positive for CD56 and CD57.