Ultrasonographic diagnosis of benign masseter muscle hypertrophy: A case report.

Masseter hypertrophy is a characteristic condition resulting from an increase in the size of the muscle mass. At times, it produces significant facial asymmetry and is an important finding in the differential diagnosis of similar located entities. A proper diagnosis of this condition would avoid more aggressive and unwarranted therapy by an inexperienced clinician who may mistake it for a more serious pathologic condition. This article reports two cases of bilateral masseter hypertrophy having characteristic diagnostic features, along with specialized imaging modalities and review of literature.