FOXP3 and mature T-cell and NK-cell non-Hodgkin lymphoma: We did not detect a statistically significant difference in the quantity of FoxP3+ cells among the TME of the included nodal PTCL subtypes, except for between nTFHLs-NOS (median: 408 FoxP3+ cells/mm2; range: 78–1178 FoxP3+ cells/mm2) and CLs, i.e., the co-occurrence of nTFHLs-AI and BCLs (median: 186.5 FoxP3+ cells/mm2; range: 117–403 FoxP3+ cells/mm2) (Figure 4a).