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Vol. 53. Issue 3.
Pages 157-158 (March 2017)
Vol. 53. Issue 3.
Pages 157-158 (March 2017)
Clinical Image
DOI: 10.1016/j.arbr.2016.12.002
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Descending Necrotizing Mediastinitis Secondary to Spontaneous Sternocleidomastoid Muscle Abscess
Mediastinitis necrosante descendente secundaria a un absceso espontáneo del músculo esternocleidomastoideo
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Luis Gorospe Sarasúaa,
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luisgorospe@yahoo.com

Corresponding author.
, Ana Paz Valdebenito-Montecinob, Gemma María Muñoz-Molinab
a Servicio de Radiodiagnóstico, Hospital Universitario Ramón y Cajal, Madrid, Spain
b Servicio de Cirugía Torácica, Hospital Universitario Ramón y Cajal, Madrid, Spain
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A 21-year-old man, consulting due to fever (39°C) and cervical pain, presented a painful mass in the right laterocervical region extending from the mastoid apophysis to the medial end of the clavicle. He had no signs of pharyngotonsillitis or otitis. Of note on laboratory tests were leukocytosis (29000leukocytes/mm3) and neutrophilia (80%). Computed tomography showed a collection affecting the right sternocleidomastoid muscle (Fig. 1A) that extended downwards towards the anterosuperior (Fig. 1B) and posterior mediastinum (Fig. 1C). The sternocleidomastoid muscle and anterosuperior mediastinal abscesses were drained surgically after radiologically guided percutaneous drainage of the posterior mediastinal collection (Fig. 1D). Microbiological analysis confirmed Streptococcus pyogenes infection, and the patient's progress was excellent.

Figure 1.

(A) Axial computed tomography (CT) image of the neck showing a collection in the right sternocleidomastoid muscle. (B) Axial CT image of upper chest showing a collection in the anterior mediastinum (asterisk), and another multiseptated collection in the posterior mediastinum (arrows). (C) Coronal reconstruction of chest CT with a better view of the posterior mediastinum collection extending downwards from the head. (D) Sagittal reconstruction of chest CT showing “pigtail” drainage tube (arrow) placed in the posterior mediastinal collection.

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Descending necrotizing mediastinitis is a rare, severe entity, usually caused by odontogenic or pharyngeal infections, although other sources of infection have been described, such as otomastoiditis, mumps, and epiglottitis. Descending necrotizing mediastinitis requires urgent, aggressive surgical treatment of the mediastinal collections and of the primary source of the infection.1 We have not found any previous cases in the literature of descending necrotizing mediastinitis caused by a spontaneous abscess of the sternocleidomastoid muscle.

Reference
[1]
D.M. Palma, S. Giuliano, A.N. Cracchiolo, M. Falcone, G. Ceccarelli, R. Tetamo, et al.
Clinical features and outcome of patients with descending necrotizing mediastinitis: prospective analysis of 34 cases.
Infection, 44 (2016), pp. 77-84

Please cite this article as: Gorospe Sarasúa L, Valdebenito-Montecino AP, Muñoz-Molina GM. Mediastinitis necrosante descendente secundaria a un absceso espontáneo del músculo esternocleidomastoideo. Arch Bronconeumol. 2017;53:157–158.

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