Peripheral T- and natural killer-cell lymphomas: ESMO–EHA Clinical Practice Guideline for diagnosis, treatment and follow-up

Peripheral T-cell and natural killer (NK)-cell lymphomas (PTCLs) represent a heterogeneous group of neoplasms derived from post-thymic T or NK cells, with diverse morphological patterns, phenotypes and clinical presentations. The International Consensus Classification and World Health Organization (WHO) classification of lymphoid and haematopoietic neoplasms recognise >30 PTCL entities1,2 (see Supplementary Table S1 and Supplementary Material Section 1, available at https://doi.org/10.1016/j.annonc.2025.01.023).