Figure 1. Lymph node pathology and flow cytometry results
The excision biopsy of inguinal lymph node shows a paracortical expansion with a mixture of small mature lymphocytes and many histiocytes (Panel A shows 20x and B shows 200x; H&E stain), which are highlighted by S100 immunostaining (Panel C, 200x). Panel D displays flow cytometry data showing increased (~16%) double negative T-cells (CD4-, CD8-).