Cystadenomas are a rare, painless, and slow-growing benign epithelial tumor of the salivary gland. This article describes the case of a papillary cystadenoma in the lower lip of a 46- year-old man. The lesion was removed using a carbon dioxide laser, and there were no signs of recurrence 1 year postoperatively. Palabras clave: carbon dioxide laser, cystadenoma, salivary gland