Recurrent parotid swelling secondary to masseter muscle hypertrophy: a multidisciplinary diagnostic and therapeutic approach

Pasquale Capaccio, Michele Gaffuri, Lorenzo Pignataro, Fausto Assandri, Pollyanna Pereira, Giampietro Farronato

Research output: Contribution to journalArticle


Purpose: To present a patient with an atypical recurrent parotid swelling due to masseter muscle hypertrophy and the diagnostic/therapeutic assessment to treat this condition. Case Report: A patient referring recurrent right facial swelling underwent a complete multidisciplinary assessment of the parotid region that revealed masseter muscle hypertrophy, confirmed by means of clinical (otolaryngological and gnathological evaluation), radiological (utrasonography, dynamic magnetic resonance imaging, and cone beam computed tomography), instrumental (electromyography to evaluate the right masseter muscle function and kinesiography to evaluate maximum right deflection – MaxRDefl and maximum opening – MaxMO) and sialendoscopy assessment where T0 indicates the pre-treatment values. All electromyographic and kinesiographic parameters were evaluated six months after the orthodontic application of a neuromuscular orthosis at T1. At T1, the effectiveness of the orthodontic therapy was demonstrated by the complete resolution of symptoms, and instrumental results documented more efficient muscle activity at rest and during clenching and a better mandibular position. At EMG T1, the resting and post-TENS values were, respectively, 1.2 and 1.8 microV. At kinesiography, MaxRDefl increased from 10.2 (T0) to 10.5 mm (T1); maxMO increased from 41.2 (T0) to 48 mm (T1). Conclusion: The proposed multidisciplinary assessment based on otolaryngological, gnathological, and radiological evaluation may be useful in the case of recurrent parotid swelling secondary to masseter muscle hypertrophy to plan an appropriate management with a removable neuromuscular orthosis.

Original languageEnglish
Pages (from-to)388-394
Number of pages7
JournalCranio - Journal of Craniomandibular Practice
Issue number6
Publication statusPublished - 2016


  • Electromyography
  • Kinesiography
  • Masseter hypertrophy
  • Masticatory muscles
  • Parotid gland
  • Recurrent parotitis
  • Salivary glands
  • Sialendoscopy

ASJC Scopus subject areas

  • Dentistry(all)
  • Otorhinolaryngology

Fingerprint Dive into the research topics of 'Recurrent parotid swelling secondary to masseter muscle hypertrophy: a multidisciplinary diagnostic and therapeutic approach'. Together they form a unique fingerprint.

  • Cite this