The staining pattern for nuclear factor of activated T-cells, cytoplasmic 1 is also reported to be useful for the differential diagnosis between PCSM-TCLPD and pseudo-T-cell lymphomas (219), where NFAT1c nuclear staining indicates PCSM-TCLPD and cytoplasmic staining indicates pseudo-T-cell lymphoma. The gene discussed is NFATC1; the disease is T-cell non-Hodgkin lymphoma.