WHO classification of mature T-cell and NK-cell neoplasms.
| Often leukemic or disseminated |
| T-cell prolymphocytic leukemia |
| T-cell granular lymphocytic leukemia |
| Aggressive NK-cell leukemia |
| Adult T-cell lymphoma/leukemia (HTLV1+) |
| Hepatosplenic T-cell lymphoma |
| Extranodal/Cutaneous |
| Extranodal NK/T-cell lymphoma, nasal type |
| Enteropathy-type T-cell lymphoma |
| Subcutaneous panniculitis-like T-cell lymphoma |
| Mucocutaneous γδ T-cell lymphoma (Provisional WHO/ EORTC 200547) |
| Mycosis fungoides |
| Sézary syndrome |
| Primary cutaneous anaplastic large cell lymphoma |
| Mainly nodal |
| Peripheral T-cell lymphoma, unspecified |
| Angioimmunoblastic T-cell lymphoma |
| Anaplastic large cell lymphoma (systemic) |
| Often leukemic or disseminated |
| T-cell prolymphocytic leukemia |
| T-cell granular lymphocytic leukemia |
| Aggressive NK-cell leukemia |
| Adult T-cell lymphoma/leukemia (HTLV1+) |
| Hepatosplenic T-cell lymphoma |
| Extranodal/Cutaneous |
| Extranodal NK/T-cell lymphoma, nasal type |
| Enteropathy-type T-cell lymphoma |
| Subcutaneous panniculitis-like T-cell lymphoma |
| Mucocutaneous γδ T-cell lymphoma (Provisional WHO/ EORTC 200547) |
| Mycosis fungoides |
| Sézary syndrome |
| Primary cutaneous anaplastic large cell lymphoma |
| Mainly nodal |
| Peripheral T-cell lymphoma, unspecified |
| Angioimmunoblastic T-cell lymphoma |
| Anaplastic large cell lymphoma (systemic) |