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Benign Masseter Muscle Hypertrophy
Eunice Y. L. Dai, MBBS, FRCR; H. Y. Yuen, MBChB, FRCR; Anil T. Ahuja, MD, FRCR
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        TERMINOLOGY

        • Synonyms

          • Benign masticator muscle hypertrophy (BMMH)
          • Benign masseteric hypertrophy (BMH)
        • Definitions

          • Benign enlargement of muscles of mastication, most commonly involving masseter muscle

        IMAGING

        • General Features

          • Ultrasonographic Findings

            • CT Findings

              • MR Findings

                • Imaging Recommendations

                  DIFFERENTIAL DIAGNOSIS

                    PATHOLOGY

                    • General Features

                      • Gross Pathologic & Surgical Features

                        CLINICAL ISSUES

                        • Presentation

                          • Demographics

                            • Natural History & Prognosis

                              • Treatment

                                Selected References

                                1. Fedorowicz Z et al: Botulinum toxin for masseter hypertrophy. Cochrane Database Syst Rev. CD007510, 2013
                                2. Kebede B et al: Idiopathic masseter muscle hypertrophy. Ethiop J Health Sci. 21(3):209-12, 2011
                                3. Ahuja AT et al: Diagnostic Imaging: Ultrasound. 1st ed. Salt Lake City: Amirsys, Inc. 11-102-5, 2007
                                4. To EW et al: A prospective study of the effect of botulinum toxin A on masseteric muscle hypertrophy with ultrasonographic and electromyographic measurement. Br J Plast Surg. 54(3):197-200, 2001
                                5. Ahuja AT et al: Sonographic findings in masseter-muscle metastases. J Clin Ultrasound. 28(6):299-302, 2000
                                6. Palacios E et al: Benign asymmetric hypertrophy of the masticator muscles. Ear Nose Throat J. 79(12):915, 2000
                                7. Yasui K et al: Morphogenesis of the beak of the chick embryo: histological, histochemical and autoradiographic studies. Embryologia (Nagoya). 10(1):42-74, 1967
                                Related Anatomy
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                                Related Differential Diagnoses
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                                References
                                Tables

                                Tables

                                KEY FACTS

                                • Terminology

                                  • Imaging

                                    • Top Differential Diagnoses

                                      TERMINOLOGY

                                      • Synonyms

                                        • Benign masticator muscle hypertrophy (BMMH)
                                        • Benign masseteric hypertrophy (BMH)
                                      • Definitions

                                        • Benign enlargement of muscles of mastication, most commonly involving masseter muscle

                                      IMAGING

                                      • General Features

                                        • Ultrasonographic Findings

                                          • CT Findings

                                            • MR Findings

                                              • Imaging Recommendations

                                                DIFFERENTIAL DIAGNOSIS

                                                  PATHOLOGY

                                                  • General Features

                                                    • Gross Pathologic & Surgical Features

                                                      CLINICAL ISSUES

                                                      • Presentation

                                                        • Demographics

                                                          • Natural History & Prognosis

                                                            • Treatment

                                                              Selected References

                                                              1. Fedorowicz Z et al: Botulinum toxin for masseter hypertrophy. Cochrane Database Syst Rev. CD007510, 2013
                                                              2. Kebede B et al: Idiopathic masseter muscle hypertrophy. Ethiop J Health Sci. 21(3):209-12, 2011
                                                              3. Ahuja AT et al: Diagnostic Imaging: Ultrasound. 1st ed. Salt Lake City: Amirsys, Inc. 11-102-5, 2007
                                                              4. To EW et al: A prospective study of the effect of botulinum toxin A on masseteric muscle hypertrophy with ultrasonographic and electromyographic measurement. Br J Plast Surg. 54(3):197-200, 2001
                                                              5. Ahuja AT et al: Sonographic findings in masseter-muscle metastases. J Clin Ultrasound. 28(6):299-302, 2000
                                                              6. Palacios E et al: Benign asymmetric hypertrophy of the masticator muscles. Ear Nose Throat J. 79(12):915, 2000
                                                              7. Yasui K et al: Morphogenesis of the beak of the chick embryo: histological, histochemical and autoradiographic studies. Embryologia (Nagoya). 10(1):42-74, 1967