• Zheng-Ying Jiang, Xin-Cheng Liao, Ming-Zhuo Liu, Zhong-Hua Fu, Ding-Hong Min, Xiao-Ting Yu, and Guang-Hua Guo.
• The Department of Burn, The First Affiliated Hospital of Nanchang University, No.17 Yong Wai Street, Nanchang, 330006, Jiangxi, People's Republic of China.
• Aesthetic Plast Surg. 2020 Oct 1; 44 (5): 1859-1868.

BackgroundAlthough keloids and hypertrophic scars are common benign hyperproliferative growths of dermal fibroblasts, the clinical problems including physical and psychological problems are significant and impairing, with few proven treatments. Intralesional triamcinolone acetonide (TAC) and combination of TAC with 5-fluorouracil (5-FU) are widely used to treat keloids and hypertrophic scars, but their efficacy and safety remain controversial.MethodsWe systematically searched MEDLINE, EMBASE, Cochrane Library, and CNKI for relevant trials.ResultsThe mean scar height and the erythema score in the TAC + 5-FU group were lower than those in the TAC group after treatment (P < 0.05). The effectiveness based on observer assessment after treatment in the TAC + 5-FU group was superior than that in the TAC group (P < 0.05); further, the subgroup analysis showed the TAC + 5-FU group was also superior than the TAC group in the treatment of hypertrophic scars (P = 0.01), and there were no significant differences in the treatment of keloid (P = 0.12). The effectiveness based on patient self-assessment after treatment in the TAC + 5-FU group was also superior than the TAC group (P < 0.05). The overall complication rate in the TAC + 5-FU group was lower than the TAC group (P < 0.05).ConclusionsCombination of TAC with 5-FU is more effective and safer than TAC alone therapy in the treatment of keloids and hypertrophic scars. Data on keloids alone or hypertrophic scars alone are, however, limited. A better understanding of effective after intralesional combination of TAC with 5-FU in the treatment of keloids alone or hypertrophic scars alone is imperative.Level Of Evidence IvThis journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

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