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Volume 12
Issue 3
10.18683/germs.2022.1346
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Case Report

Actinomyces in the Mediastinum. Surprise Is Key in All Art

by
Diego Fernando Severiche-Bueno
1,*,
Sandra Ximena Ramirez
2,
María Teresa Vargas-Cuervo
3,
David Felipe Severiche Bueno
1,
Carmelo Jiménez Navarro
4,
Jacqueline Mugnier
5 and
Juan Pablo Rodriguez
6
1
Universidad de La Sabana, Chía, Cundinamarca, KM 7.5 Autopista Norte de Bogotá, Chía, Colombia
2
Universidad del Rosario, Bogotá D.C, Colombia, Calle 163A # 13B - 60, Bogotá, Colombia
3
Universidad del Rosario, Bogotá D.C, Colombia, Cra. 7 No. 40 - 62, Bogotá, Colombia
4
Universidad de La Sabana, Chía, Cundinamarca, Calle 163A # 13B - 85, Bogotá, Colombia
5
Fundación Cardioinfantil, Bogotá D.C, Colombia, Calle 163A # 13B - 85, Bogotá, Colombia
6
Fundación Neumológica Colombiana, Bogotá D.C, Colombia, Calle 163A # 13B - 85, Bogotá, Colombia
*
Author to whom correspondence should be addressed.
GERMS 2022, 12(3), 409-413; https://doi.org/10.18683/germs.2022.1346
Submission received: 1 May 2022 / Revised: 15 August 2022 / Accepted: 19 August 2022 / Published: 30 September 2022
Versions Notes

Abstract

Introduction: Actinomycosis is an unusual chronic granulomatous infectious disease. They are commensals in various sites of the human body but with little pathogenicity. Actinomyces israelii is the most prevalent species but more than 30 species have been described. Infection of the lower respiratory tract is unusual, the involvement of mediastinum being even rarer. Case report: A 63-year-old man, previously healthy and living in a rural area, presented with a 5-month history of hemoptysis, pleuritic pain, weight loss, and night sweats. Community-acquired pneumonia with a mediastinal mass was documented, for which he received antibiotic management. Thoracoscopy was carried out for diagnosis and resection of the mediastinal mass due to inconclusive findings in the percutaneous biopsy. Pathology reported the presence of filamentous Gram-positive bacteria visible in Grocott staining. Due to the pathology findings, and the fact that no other infectious agents were identified, a diagnosis of actinomycosis was established. Treatment with oral amoxicillin 1g TID for 6 months was initiated. Conclusions: As far as we are aware, we present the sixth case of mediastinal actinomycosis. We present this case to bring attention to this rare but clinically relevant presentation to be considered as a differential diagnosis of mediastinal masses and to emphasize the need for specific anaerobic cultures to improve the diagnostic yield.
Keywords: Actinomyces; mediastinal disease; anaerobic bacteria Actinomyces; mediastinal disease; anaerobic bacteria

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MDPI and ACS Style

Severiche-Bueno, D.F.; Ramirez, S.X.; Vargas-Cuervo, M.T.; Bueno, D.F.S.; Navarro, C.J.; Mugnier, J.; Rodriguez, J.P. Actinomyces in the Mediastinum. Surprise Is Key in All Art. GERMS 2022, 12, 409-413. https://doi.org/10.18683/germs.2022.1346

AMA Style

Severiche-Bueno DF, Ramirez SX, Vargas-Cuervo MT, Bueno DFS, Navarro CJ, Mugnier J, Rodriguez JP. Actinomyces in the Mediastinum. Surprise Is Key in All Art. GERMS. 2022; 12(3):409-413. https://doi.org/10.18683/germs.2022.1346

Chicago/Turabian Style

Severiche-Bueno, Diego Fernando, Sandra Ximena Ramirez, María Teresa Vargas-Cuervo, David Felipe Severiche Bueno, Carmelo Jiménez Navarro, Jacqueline Mugnier, and Juan Pablo Rodriguez. 2022. "Actinomyces in the Mediastinum. Surprise Is Key in All Art" GERMS 12, no. 3: 409-413. https://doi.org/10.18683/germs.2022.1346

APA Style

Severiche-Bueno, D. F., Ramirez, S. X., Vargas-Cuervo, M. T., Bueno, D. F. S., Navarro, C. J., Mugnier, J., & Rodriguez, J. P. (2022). Actinomyces in the Mediastinum. Surprise Is Key in All Art. GERMS, 12(3), 409-413. https://doi.org/10.18683/germs.2022.1346

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