“…natural killer or T cell lymphoma/leukaemia) was considered possible, and such a patient has been reported. 8 Excluding this, a range of immunohistochemical tests (including those for CD45, CD20, CD79a, CD3, CD4, CD43, CD34, cytotoxic granule-associated RNA binding protein [TIA-1], terminal deoxynucleotidyl transferase [TdT], CD30, epithelial membrane antigen, ALK1, myeloperoxidase, Cam5.2, AE1/AE3 and EBER-ISH) were negative, no T-cell receptor gene rearrangement was identified, and the flow cytometry showed 84% of the cells to be nonlymphoid in origin.…”