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Objective: The aim of this work was to produce a consensus-based report for capillaroscopy in rheumatology to be used in daily clinical practice. Methods: A written Delphi questionnaire regarding capillaroscopy report was developed from a literature review and expert consensus. The Delphi questionnaire was sent to an international panel including 25 rheumatologists experts in capillaroscopy, asking them to rate their level of agreement or disagreement with each statement. The exercise consisted of three online rounds and a face-to-face (live meeting) that took place in the PANLAR 2018 congress held in Buenos Aires, Argentina. Results: The participants to the first, second, third, and face-to-face round were 22, 21, 21, and 16 rheumatologists, respectively. Fifty-five items were discussed in the first round, 58 in the second, 22 in the third, and 9 in the face-to-face meeting. At the end of the exercise, 46 recommendations for the capillaroscopy report in rheumatology reached a consensus. Conclusion: This is the first consensus-based report in capillaroscopy. It will be useful in daily clinical practice and to address the effort of the standardization in the technique. Key Points: • The current lack of consensus for the capillaroscopy report makes difficult the interpretation of findings as well as follow-up of rheumatic diseases. • This study produced the first international consensus for the format and content of the naifold capillaroscopy report in rheumatology. • The report is an integral part of the capillaroscopy examination and its use in a homogeneous form can help in the correct interpretation of findings in daily practice. [ABSTRACT FROM AUTHOR]

Capillaroscopy is a non-invasive and safe tool which allows the evaluation of the morphology of the microcirculation. Since its recent incorporation in the 2013 American College of Rheumatology (ACR)/European League Against Rheumatism (EULAR) classification criteria for systemic sclerosis together with its assessed role to monitor disease progression, capillaroscopy became a 'mainstream' investigation for rheumatologists. Given its increasing use by a variety of physicians internationally both in daily practice to differentiate primary from secondary Raynaud's phenomenon, as well as in research context to predict disease progression and monitor treatment effects, standardisation in capillaroscopic image acquisition and analysis seems paramount. To step forward to this need, experts in the field of capillaroscopy/microcirculation provide in this very consensus paper their view on image acquisition and analysis, different capillaroscopic techniques, normal and abnormal capillaroscopic characteristics and their meaning, scoring systems and reliability of image acquisition and interpretation. • Nailfold videocapillaroscopy is the gold standard, dermatoscopy and ophthalmoscopy may be used as screening tools. • "Scleroderma patterns" can reliably be discerned from "non-scleroderma patterns". • Automated analysis including 'counting' capillaries is the new kid on the block. [ABSTRACT FROM AUTHOR]