Lymphoma flow cytometry demonstrated the following: 1) T-cell predominance (59.4% of nucleated cells) and inverted CD4/CD8 ratio (0.19), and no obvious abnormalities were found in the other immunophenotypes; 2) NK cells comprised 5.1% and B cells 2.3% (predominantly mature polyclonal population); and 3) plasma cells constituted 0.1% of cells without clonal predominance. Here, CD4 is linked to lymphoma.