Bilateral coronoid hyperplasia. Report of two cases and review of the literature.

Two cases of bilateral hyperplasia of the coronoid processes of the mandible are presented. The patients were men and first noticed their symptoms at 14 and 10 years of age, respectively. They were treated successfully by intraoral bilateral coronoidectomies. A review of the literature revealed only forty-nine cases of the condition reported; 43 cases in western countries and 6 in Japan. As described previously, the majority of the cases were men and their symptoms occurred under the age of 19 years.