Results of CD4 and CD8 staining in nodal peripheral T cell lymphomas (PTCLs) and other lymphoid lesions
| Lesion | n | CD4+CD8+ | CD4+CD8− | CD4−CD8+ | CD4−CD8− |
| AITL | 48 | 0/48 (0.0)* | 43/48 (89.6) | 2/48 (4.2) | 3/48 (6.2) |
| PTCL,NOS | 81 | 2/81 (2.5) | 55/81 (67.9) | 8/81 (9.9) | 16/81 (19.7) |
| ALCL,ALK− | 14 | 1/14 (7.1) | 4/14 (28.6) | 4/14 (28.6) | 5/14 (35.7) |
| ALCL,ALK+ | 19 | 0/19 (0.0) | 3/19 (15.8) | 4/19 (21.1) | 12/19 (63.2) |
| NKTCL | 11 | 0/11 (0.0) | 0/11 (0.0) | 2/11 (18.2) | 9/11 (81.8) |
| T-LBL | 11 | 0/11 (0.0) | 1/11 (9.1) | 0/11 (0.0) | 10/11 (90.9) |
↵* Number of positive cases/total number of cases (%).
AITL, angioimmunoblastic T cell lymphoma; ALCL, ALK−, anaplastic large cell lymphoma, anaplastic lymphoma kinase-negative; ALCL, ALK+, anaplastic large cell lymphoma, ALK-positive; NKTCL, NK/T cell lymphoma; PD-1, programmed death-1; PTCL,NOS, peripheral T cell lymphoma, not otherwise specified; T-LBL, T lymphoblastic lymphoma.