Bilateral coronoid hyperplasia resulting in severe limitation of mandibular movement. Report of a case.

A case of bilateral coronoid hyperplasia with limitation of mandibular motion in a female patient has been presented. Her symptoms began to develop around the age of 44. We believe that this is the first case to be reported in a female. Also, in all other reported cases symptoms began to develop around the onset of puberty. The literature has been reviewed with specific reference to the etiology of bilateral coronoid hyperplasia. This case brings the total number of reported cases to twenty-two. We hope that if similar cases are identified in female patients the practitioners will report them promptly. Only in this way will we be in a better position to understand the etiology of bilateral coronoid hyperplasia with special reference to heredity.