Grey zone lymphoma with features intermediate between diffuse large B-cell lymphoma and classical Hodgkin lymphoma. Case report and literature review

In the grey zone lymphomas (GZL), there are overlapping characteristics between diffuse large B-cell lymphoma (DLBCL) and classic Hodgkin lymphoma (CHL). The unusual nature of the pathology combined with the heterogeneity of the disease, its recent description as a specific entity, its diagnostic difficulty, and the lack of sufficient therapeutic experience justifies its continuous description. The case is presented of a patient with a fever of one month onset, with no response to initial management. A left inguinal lymph node biopsy reported a diagnosis of GZL with intermediate characteristics between DLBCL and CHL. Although there are no established guidelines for the management of this condition, the current evidence suggests a better response in treatments meant for diffuse large B-cell lymphoma. This same therapy was used in this patient, with a favourable clinical outcome. (C) 2018 Institute Nacional de Cancerologia. Published by Elsevier Espana, S.L.U. All rights reserved.