During the last few years, a 64-year-old man experienced a progressive enlargement of his hands, feet, and tongue and an alteration in the position of his frontal teeth. In a university medical clinic acromegaly was diagnosed, based on external features, serum tests, and an oral glucose tolerance test. A pituitary microadenoma was discovered. The most common oral features of acromegaly are a prognatic mandible, interdental spaces, macroglossy, and everted, swollen lips. In this article the primary treatment and the possible oral sequelae are described.