Rare Complication of Massive Depigmentation After Postoperative Treatment of Giant Keloid Combined With Strontium-90.

Post-acne keloids have become a serious problem affecting the physical and mental health of adolescents. However, traditional single-treatment methods have a high recurrence rate and are highly susceptible to a variety of complications. Postoperative radiotherapy has rapidly become a popular choice for comprehensive postoperative treatment because of its painlessness, non-invasiveness, convenience, low recurrence rate, and few complications. 1 In the available literature, no serious complications have been reported. Here we introduce a case of keloid after acne with isotope strontium-90 as a comprehensive treatment regimen, which leads to extensive depigmentation in the maxillofacial region. Combined with knowledge of the relevant literature, the mechanisms, types, and timing and dose, and reflect on balancing of recurrence rates and complications to deepen our understanding of the disease.