Immunophenotypic characteristics in common T and NK-cell neoplastic entities. Each column in the heat map represents a T/NK-cell neoplastic entity, and each row represents a diagnostic marker assessed by immunophenotyping of tissue or cell samples. The prevalence of cases positive for each marker is color-coded, as shown in the legend. ALCL, anaplastic large cell lymphoma; ALK, anaplastic lymphoma kinase; ATLL, adult T-cell leukemia/lymphoma; BIA-ALCL, breast implant–associated ALCL; EATL, enteropathy-associated T-cell lymphoma; HSTL, hepatosplenic T-cell lymphoma; ITCL-NOS, intestinal T-cell lymphoma, NOS; MEITL, monomorphic epitheliotropic intestinal T-cell lymphoma; MF, mycosis fungoides; NA, not available; NK-LGLL/CLPD-NK, NK-large granular lymphocytic leukemia/chronic LPD of NK cells; NK-LPD GI, indolent NK-cell LPD of the gastrointestinal tract; nodal EBV TCL, primary nodal EBV⁺ T/NK-cell lymphoma; pcALCL, primary cutaneous ALCL; PTCL-NOS, peripheral T-cell lymphoma, NOS; SPTCL, subcutaneous panniculitis-like T-cell lymphoma; SS, Sezary syndrome; TFHL, follicular helper T-cell lymphoma; T-LBL, T-lymphoblastic leukemia/lymphoma; T-LPD GI, indolent clonal T-cell LPD of the gastrointestinal tract; T-LGLL, T-cell large granular lymphocytic leukemia; T-PLL, T-cell prolymphocytic leukemia.