Retrospective study of keloid formation after CO2 excision therapy for hidradenitis suppurativa

To the Editor: Excision using a carbon dioxide (CO2) laser (10,600-nm) can be ideal for treatment of late-stage hidradenitis suppurativa (HS). However, despite a lack of evidentiary support, some clinicians are against using this treatment option in patients with a prior history of keloids, noting that it may worsen keloidal formation. 1 Mamalis A.D. Lev-Tov H. Nguyen D.H. Jagdeo J.R. Laser and light-based treatment of Keloids–a review. J Eur Acad Dermatol Venereol. 2014; 28: 689-699https://doi.org/10.1111/jdv.12253 Crossref PubMed Scopus (57) Google Scholar We conducted a retrospective review to examine the incidence of keloid formation in patients with HS who underwent CO2 excision therapy at the Henry Ford Hospital Department of Dermatology from June 2014 to March 2021.