RESUMEN
OBJECTIVE: Actinic cheilitis (AC) is a precancerous lesion of the lip vermillion caused by prolonged exposure to ultraviolet light. The aim of this study was to evaluate the effect of 3 percent diclofenac in 2.5 percent hyaluronic acid gel in the treatment of AC. METHODS: Thirty-four patients with chronic AC were treated twice a day with topical diclofenac during a period of 30 to 180 days. The individuals were followed up every 15 days by means of clinical examination and digital photographic documentation. RESULTS: Of the 27 patients that completed the study, 12 (44 percent) showed complete remission of the whitish plaques and exfoliative areas, and 15 (56 percent) had partial remission of the clinical picture of cheilitis. The latter group was submitted to excision of the leukoplakic areas which diagnosis varied from mild to moderate epithelial dysplasia. CONCLUSIONS: The results suggest a promising role for diclofenac in hyaluronic acid gel in the treatment of AC. This treatment has the advantages of not being invasive and showing few side effects.