Intestinal natural killer/T-cell lymphoma presenting as a pancreatic head space-occupying lesion: A case report

Figure 4 Multicolor flow cytometry immunophenotype of the lesion. A: Doublets were excluded by side-scatter height (SSC-H) / side-scatter area (SSC-A) scatter. Debris were excluded by side-Forward-scatter area (FSC-A)/SSC-A and FSC-A/CD45. Abnormal natural kill (NK) cells (red) were gated by SSC-A/CD45 and CD38/CD19. These cells were CD45++, CD16 partial positive, CD7++, CD38+, HLA-DR-, CD34-, CD117-, CD19-, CD33-, CD13-. Neutrophils (blue) were shown as internal control; B-D: The abnormal NK cells (red) were targeting T cell receptor beta-chain constant region 1(TRBC1)-, CD5-, TCR gammadelta (TCRγδ)-, CD2++, CD3++, CD4-, CD8+, CD56++, CD25-, CD5-, CD99++, TCRalphabeta (TCRαβ)-, CD335-, CD28-, CD57-. CD158a, h expression of these cells was 40.123%. Normal T cells (green) were shown as internal control.