Early Fractional Ablative Laser for Skin Cancer Excision Scars: A Randomized Split-Scar Study

Fractional ablative laser resurfacing has been shown to improve the final cosmetic appearance of surgical scars, but optimal timing is unknown.To compare surgical scars treated with fractional carbon dioxide (CO 2 ) laser performed on Day 0 and Day 14.Prospective, randomized, split-scar, physician-blinded study of 30 surgical scars on the limbs. Scars halves received fractional CO 2 laser on either Day 0 or Day 14. Scar assessment at 6 months evaluated patient preference, physician modified Manchester Scar Scale (MMSS) score, and quantitative scar analysis on histology (fractal dimension [F D ] and lacunarity [L] analysis).There was no significant difference in patient assessment (54% preferred Day 0 side, 46% preferred Day 14 side, p = .58) or physician assessment (mean MMSS 8.4 for Day 0 vs 8.7 for Day 14, p = .28). Fractal dimensions were similar for both interventions (mean 1.778 for Day 0 vs 1.781 for Day 14, p = .80). Lacunarity was similar for both interventions (mean 0.368 for Day 0 vs 0.345 for Day 14, p = .44).Single-center study with wounds limited to limbs of skin Phototype I-II subjects; 4 of whom were lost to follow-up.Intraoperative CO 2 laser is noninferior to Day 14 laser resurfacing for surgical scar treatment.