Ultrasonic diagnosis of masseteric hypertrophy.
Masseteric hypertrophy may present a diagnostic dilemma, its confirmation frequently being by exclusion of other conditions. The literature relating to this syndrome is reviewed. A study to confirm the suitability of ultrasound in diagnosis, and to establish a normal range, is described. Sixty-two masseter muscles were measured using a standardized technique and the derived normal range for transverse dimension was 8.5-13.5 mm. Three instances of clinically diagnosed masseteric hypertrophy were examined; in each case measured transverse masseteric dimension was significantly greater than the normal range. Direct ultrasonic measurement of masseteric bulk should replace computed tomography as the definitive investigation in suspected cases.
Department of Radiodiagnosis, Bristol Royal Infirmary, UK.
M H
MH
Morse
E F
EF
Brown
D000328:Adult; D005260:Female; D006801:Humans; D006984:Hypertrophy; D008297:Male; D008406:Masseter Muscle / Q000000981:diagnostic imaging / Q000473:pathology*; D008410:Masticatory Muscles / Q000473:pathology*; D008875:Middle Aged; D011862:Radiography, Panoramic; D014463:Ultrasonography