| ABC activated B cell |
| ABCM doxorubicin (Adriamycin), BCNU, cyclophosphamide and melphalan |
| AIDS acquired immune deficiency syndrome |
| AITL angioimmunoblastic T-cell lymphoma |
| ALCL anaplastic large cell lymphoma |
| ALL acute lymphoblastic leukaemia |
| AML acute myeloid leukaemia |
| APAAP alkaline phosphatase–anti-alkaline phosphatase |
| ATLL adult T-cell leukaemia/lymphoma |
| BCR B-cell receptor |
| B-PLL B-cell prolymphocytic leukaemia |
| CAR-T chimeric antigen receptor-T |
| CHAD cold haemagglutinin disease |
| CHOP cyclophosphamide, doxorubicin, vincristine and prednisone or prednisolone |
| CLA cutaneous lymphocyte antigen |
| CLL chronic lymphocytic leukaemia |
| CLPD-NK chronic lymphoproliferative disorder of NK cells |
| CNS central nervous system |
| CT computed tomography |
| DLBCL diffuse large B-cell lymphoma |
| EATL enteropathy-associated T-cell lymphoma |
| EBER Epstein–Barr virus-encoded RNA |
| EBV Epstein–Barr virus |
| EGIL European Group for the Immunological Characterization of Leukemias |
| EMA epithelial membrane antigen |
| EORTC European Organization for Research and Treatment of Cancer |
| ESMO European Society for Medical Oncology |
| FAB French–American–British (classification) |
| FISH fluorescence in situ hybridization |
| FLIPI Follicular Lymphoma International Prognostic Index |
| GCB germinal centre B cell |
| HAART highly active antiretroviral therapy |
| HCL-V hairy cell leukaemia variant |
| HL Hodgkin lymphoma |
| H&E haematoxylin & eosin |
| HGBL high-grade B-cell lymphoma |
| HHV8 human herpesvirus 8 |
| HIV human immunodeficiency virus |
| HTLV-1 human T-cell lymphotropic virus 1 |
| Ig immunoglobulin |
| IGH immunoglobulin heavy chain |
| IGK immunoglobulin kappa chain |
| IGL immunoglobulin lambda chain |
| IPI International Prognostic Index |
| IPSID immunoproliferative small intestinal disease |
| KIR killer immunoglobulin-like receptor |
| KSHV Kaposi’s sarcoma-associated herpesvirus |
| LBL lymphoblastic lymphoma |
| L&H lymphocytic and histiocytic Reed–Sternberg variant |
| LDH lactate dehydrogenase |
| LGLL large granular lymphocytic leukaemia |
| LMP1 latent membrane protein 1 |
| MALT mucosa-associated lymphoid tissue |
| MBL monoclonal B-cell lymphocytosis |
| MCL mantle cell lymphoma |
| MEITL monomorphic epitheliotropic intestinal T-cell lymphoma |
| MF mycosis fungoides |
| MGUS monoclonal gammopathy of undetermined significance |
| MHC major histocompatibility complex |
| MIPI Mantle cell lymphoma International Prognostic Index |
| NHL non-Hodgkin lymphoma |
| NK natural killer |
| NLPHD nodular lymphocyte predominant Hodgkin lymphoma |
| NOS not otherwise specified |
| PAS periodic acid–Schiff |
| PCR polymerase chain reaction |
| PEL primary effusion lymphoma |
| PET positron emission tomography |
| PLL prolymphocytic leukaemia |
| POEMS Polyneuropathy, Organomegaly (hepatomegaly, splenomegaly, lymphadenopathy), Endocrinopathy, M-protein and Skin changes (syndrome) |
| PTCL, NOS peripheral T-cell lymphoma, not otherwise specified |
| PUVA psoralen plus ultraviolet light |
| RT-PCR reverse transcriptase polymerase chain reaction |
| SDRPL splenic diffuse red pulp small B-cell lymphoma |
| SH2 src-like homology 2 |
| SLL small lymphocytic lymphoma |
| SmIg surface membrane immunoglobulin |
| SMZL splenic marginal zone lymphoma |
| SS Sézary syndrome |
| TCR T-cell receptor |
| TdT terminal deoxynucleotidyl transferase |
| TFH T follicular helper |
| T-LGLL T-cell large granular lymphocytic leukaemia |
| Treg Regulatory T cells |
| T-PLL T-cell prolymphocytic leukaemia |
| TRA T cell receptor alpha |
| TRB T cell receptor Beta |
| TRG T cell receptor gamma |
| VAD vincristine, doxorubicin (Adriamycin) and dexamethasone |
| VEGF vascular endothelial growth factor |
| WHO World Health Organization |