PT - JOURNAL ARTICLE AU - Ricard, Fabien AU - Cheson, Bruce AU - Barrington, Sally AU - Trotman, Judith AU - Schmid, Annette AU - Brueggenwerth, Guenther AU - Salles, Gilles AU - Schwartz, Larry AU - Goldmacher, Greg AU - Jarecha, Rudresh AU - Narang, Jayant AU - Broussais, Florence AU - Galette, Paul AU - Liu, Min AU - Bajpai, Surabhi AU - Perlman, Eric AU - Gillis, Julie AU - Smalberg, Ira AU - Terve, Pierre AU - Zahlmann, Gudrun AU - Korn, Ron TI - Application of the Lugano Classification for Initial Evaluation, Staging, and Response Assessment of Hodgkin and Non-Hodgkin Lymphoma: The PRoLoG Consensus Initiative (Part 1—Clinical) AID - 10.2967/jnumed.122.264106 DP - 2023 Jan 01 TA - Journal of Nuclear Medicine PG - 102--108 VI - 64 IP - 1 4099 - http://jnm.snmjournals.org/content/64/1/102.short 4100 - http://jnm.snmjournals.org/content/64/1/102.full SO - J Nucl Med2023 Jan 01; 64 AB - Our objective was to provide consensus recommendations from a consortium of academic and industry experts in the field of lymphoma and imaging for consistent application of the Lugano classification. Methods: Consensus was obtained through a series of meetings from July 2019 until September 2021 sponsored by the Pharma Imaging Network for Therapeutics and Diagnostics (PINTaD) as part of the PINTaD Response Criteria in Lymphoma Working Group (PRoLoG) consensus initiative. Results: Consensus recommendations clarified technical considerations for PET/CT and diagnostic CT from the Lugano classification, including updating the FDG avidity of different lymphoma entities, clarifying the response nomenclature, and refining lesion classification and scoring, especially with regard to scores 4 and 5 and the X category of the 5-point scale. Combination of metabolic and anatomic responses is clarified, as well as response assessment in cases of discordant or missing evaluations. Use of clinical data in the classification, especially the requirement for bone marrow assessment, is further updated on the basis of lymphoma entities. Clarification is provided with regard to spleen and liver measurements and evaluation, as well as nodal response. Conclusion: Consensus recommendations are made to comprehensively address areas of inconsistency and ambiguity in the classification encountered during response evaluation by end users, and such guidance should be used as a companion to the 2014 Lugano classification.