4 yo female with diffuse lymphadenopathy for 7 months. CBC: hb/hct 9.6/29.5, plt 96, wbc 10.6, ANC 0.37, ALC 8.14, MCV 78, RDW 17.
Flow cytometry study of the peripheral blood:
CD4/8 double-negative TCRab T cells/ total T cells = 9.9% x 29.4% = 2.91%
CD4/8 double-negative TCRab T cells/ total lymphocytes = 6.8% x29.4%= 2.0%
CD4/8 double-negative TCRab T cells/ total lymphocytes = 6.8% x29.4%= 2.0%