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Differential diagnosis of swelling. 1 = edema; 2 = malar edema; 3 = late inflammatory response syndrome; 4 = late onset nodules (LON); 5 = persistent intermittent delayed swelling. Notes: Adapted with permission from Pirayesh A, Bertossi D, Heydenrych I, editors. Aesthetic Facial Anatomy Essentials for Injections. Boca Raton: CRC Press; 2020.66 Copyright 2020 Taylor & Francis.
