Intramuscular myxoma of the masseter.
D000368:Aged; D006801:Humans; D008297:Male; D008406:Masseter Muscle / Q000473:pathology*; D008410:Masticatory Muscles / Q000473:pathology*; D009135:Muscular Diseases / Q000473:pathology*; D009232:Myxoma / Q000473:pathology*