An out-of-season cold: filler-induced vascular occlusion of the columellar artery causing necrosis of the cartilaginous anterior nasal septum case report and a literature review by Corrado Zengarini, Claudia Sapigni, Mattia Benati, Giovanni D'Agostino, Bianca Maria Piraccini, Davide Melandri, Antonio Russo, Società Italiana di Dermatologia Chirurgica, Oncologica, Correttiva ed Estetica (SIDCO)

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