Durable remission in recurrent T-cell-rich B-cell lymphoma with the anti-CD20 antibody rituximab.

A diagnostic continuum exists between lymphocyte-predominant Hodgkin's disease, T-cell-rich B-cell lymphoma (TCRBCL), and diffuse large B-cell lymphoma. While TCRBCLs are uncommon, their clinical and morphologic presentation can mimic other Hodgkin's and non-Hodgkin's lymphomas from which they must be distinguished for diagnosis and treatment. We present an unusual case of a 30-year-old man with recurrent TCRBCL arising from lymphocyte-predominant Hodgkin's disease with remarkable response to treatment with the anti-CD20 antibody, rituximab.