Peripheral T-cell lymphoma simulating Hodgkin's disease with initial bone marrow involvement.

In a patient who had fever and cytopenias but no peripheral lymphadenopathy, bone marrow biopsy revealed findings consistent with Hodgkin's disease. Subsequently lymph node biopsy specimens showed lymphoma with features more consistent with peripheral T-cell lymphoma. The clinical features of this patient were those that have been ascribed to an atypical clinical form of Hodgkin's disease. This case illustrates the inadequacy of bone marrow examination as the sole criterion for establishing an initial diagnosis of Hodgkin's disease, particularly in relationship to the newly recognized pleomorphic variants of T-cell malignant lymphoma.