Focal myositis of the sternocleidomastoid muscle: a rare and uncommon cause of cervical mass
  • Léa Docquier
    Service de Médecine Interne. Hôpitaux Universitaires de Strasbourg
  • Xavier Jannot
    Service de Médecine Interne. Hôpitaux Universitaires de Strasbourg
  • Zaida Córdoba-Sosa
    Servicio de Medicina Interna. Hospital General de Fuerteventura
  • Léa Pierre
    Service de Médecine Interne. Hôpitaux Universitaires de Strasbourg
  • Pierre Alexis Austrusseau
    Service de Radiologie Interventionnelle. Hôpitaux Universitaires de Strasbourg
  • Emmanuel Andres
    Service de Médecine Interne. Hôpitaux Universitaires de Strasbourg
  • Noel Lorenzo Villalba
    Service de Médecine Interne. Hôpitaux Universitaires de Strasbourg

Keywords

Neck masses, sternocleidomastoid muscle, magnetic resonance image (MRI)

Abstract

We report on a 70-year-old male patient admitted to the internal medicine department for evaluation of a right cervical mass. He had been treated with antibiotics as an outpatient by his primary care doctor. Upon admission the patient was asymptomatic, but within a few hours his cervical mass enlarged; this enlargement was confined to the right sternocleidomastoid muscle. Complete blood investigations including serology and autoimmunity were negative. The neck scan and MRI were in favour of myositis. No other lesions were found either in the nasal fibre-optic exam or in the thoracic-abdominal-pelvic scan. The biopsy of the muscle showed a lymphoplasmacytic inflammatory infiltrate of the perimysium. The diagnosis of focal myositis was made. The patient clinically improved during hospitalisation with complete resolution of symptoms without any specific intervention.

VIEW THE ENTIRE ARTICLE

References

  • Ramos EA, Perdomo DJ, Muiño JM, Diamante M, Caruso D, de la Paz Saenz V. Neck masses in aged patients: etiology and semiological features associated with malignancy. Medicina (B Aires) 2023;83:29–34.
  • Gallay L, Streichenberger N, Benveniste O, Allenbach Y. Myosite focale: une maladie méconnue [Focal myositis: an unknown disease]. Rev Med Interne 2017;38:679–684.
  • Pynnonen MA, Gillespie MB, Roman B, Rosenfeld RM, Tunkel DE, Bontempo L, et al. Clinical practice guideline: evaluation of the neck mass in adults. Executive summary. Otolaryngol Head Neck Surg 2017;157:355–71.
  • Balikci HH, Gurdal MM, Ozkul MH, Karakas M, Uvacin O, Kara N, et al. Neck masses: diagnostic analysis of 630 cases in Turkish population. Eur Arch Otorhinolaryngol 2013;270:2953–8.
  • Bhattacharyya N. Predictive factors for neoplasia and malignancy in a neck mass. Arch Otolaryngol Head Neck Surg 1999;125:303–7.
  • Lee J, Fernandes R. Neck masses: evaluation and diagnostic approach. Oral Maxillofac Surg Clin North Am 2008;20:321–37.
  • Auerbach A, Fanburg-Smith JC, Wang G, Rushing EJ. Focal myositis: a clinicopathologic study of 115 cases of an intramuscular mass-like reactive process. Am J Surg Pathol 2009;33:1016–24.
  • Heffner RR Jr, Armbrustmacher VW, Earle KM. Focal myositis. Cancer 1977;40:301–6.
  • Sekiguchi K, Kanda F, Oishi K, Hamaguchi H, Nakazawa K, Maeda N, et al. HLA typing in focal myositis. J Neurol Sci 2004;227:21–5.
  • Views: 688
    HTML downloads: 56
    PDF downloads: 527


    Published: 2023-05-30
    Issue: 2023: Vol 10 No 6 (view)


    How to cite:
    1.
    Docquier L, Jannot X, Córdoba-Sosa Z, Pierre L, Austrusseau PA, Andres E, Lorenzo Villalba N. Focal myositis of the sternocleidomastoid muscle: a rare and uncommon cause of cervical mass. EJCRIM 2023;10 doi:10.12890/2023_003919.

    Most read articles by the same author(s)

    1 2 3 > >>