Seoane Lestón, Juan ManuelWarnakulasuriya, SamanBagan, JoseAguirre Urizar, José ManuelLópez Jornet, PíaHernández Vallejo, GonzaloGonzález Moles, Miguel ÁngelPereiro Ferreiros, ManuelSeoane Romero, JavierVarela Centelles, Pablo Ignacio2021-06-152021-06-152021Seoane, J, Warnakulasuriya, S, Bagán, JV, et al. Assembling a consensus on actinic cheilitis: A Delphi study. J Oral Pathol Med. 2021; 00: 1– 9. https://doi.org/10.1111/jop.13200http://hdl.handle.net/10347/26451Aims: To discuss the terminology to define and classify actinic cheilitis (AC) and to build a consensus on the diagnostic and therapeutic approaches to AC. Methods: Two-round Delphi study using a questionnaire including 34 closed sentences (9 on terminology and taxonomy, 5 on potential for malignant transformation, 12 on diagnostic aspects, 8 on treatment) and 8 open questions. Experts’ agreement was rated using a Likert scale (1–7). Results: A consensus was reached on 24 out 34 statements (73.5%) and on 5 out of 8 (62.5%) close-ended questions. The response rate was identical in both rounds (attrition of 0%). AC is the term with the highest agreement (median of 7 (strongly agree; IQR: 6–7)) and the lowest dispersion (VC = 21.33). ‘Potentially malignant disorder’ was the preferred classification group for AC (median of 7) and 85.6% of participants showing some level of agreement (CV < 50). Experts (66.75%) consider AC a clinical term (median: 7; IQR: 4–7) and believe definitive diagnosis can be made clinically (median: 6; IQR: 5–7), particularly by inspection and palpation (median: 5; IQR: 4–6). Histopathological confirmation is mandatory for the management of AC (median: 5; IQR: 2.5–7), even for homogeneous lesions (median: 5; IQR: 3.5–6). Consensus was reached on all treatment statements (VC < 50). Conclusions: AC is a potentially malignant disorder with a significant lack of agreement on diagnostic criteria, procedures, biopsy indications and the importance of techniques to assist in biopsy. A consensus was reached on nomenclature and management of this disordereng© 2021 The Authors. Journal of Oral Pathology & Medicine published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly citedAtribución 4.0 Internacionalhttp://creativecommons.org/licenses/by/4.0/Actinic cheilitisConsensusDelphi studyPotentially malignant oral disorderjournal article10.1111/jop.132001600-0714open access