Alexandrite laser hair removal for pediatric microtia patients undergoing autologous rib cartilage auricular reconstruction: A retrospective analysis.

BACKGROUND

Autologous rib auricular reconstruction for pediatric microtia is often a multi-staged process. Associated low hairlines are frequently incorporated, which can result in unsatisfactory cosmetic outcomes and hygiene challenges. The main objective was to evaluate the efficacy and ideal timing of alexandrite laser hair removal in pediatric microtia reconstruction.

METHODS

A retrospective study was conducted at a quaternary pediatric hospital in microtia patients with at least one alexandrite laser hair removal session June 2018 through July 2024. Demographic data, laser treatment details, and operative photos were reviewed. Patients were divided into two cohorts: before versus after stage two reconstruction. Hair growth was evaluated using the Ferriman Gallwey (FG) system in randomized, blinded assessments by two pediatric otolaryngologists.

RESULTS

Twenty-eight patients had operative photos available for review. The average age at first laser treatment was 13.8 years with on average four sessions. FG score improved in 67.9% of patients. Postoperative FG grades were significantly lower than preoperative (p < 0.0001), and Fitzpatrick (FP) skin type significantly impacted the change in FG score (p = 0.05). Most patients (80.6%) had laser treatment after stage two repair, but timing did not ultimately impact the change in FG score (p = 0.84) or surgical complication rate (16%).

CONCLUSION

Alexandrite laser hair removal is a safe and effective treatment for reducing hair growth following microtia reconstruction, improving both cosmetic appearance and hygiene. Patients with FP skin type IV may be at increased risk for less benefit. Timing of laser treatment relative to stage two reconstruction does not appear to impact outcomes.