Tuberc Respir Dis.  2005 Jun;58(6):576-581.

Diagnosis and Treatment of Endobronchial Actinomycosis

Affiliations
  • 1Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea. wjkoh@smc.samsung.co.kr
  • 2Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
  • 3Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.

Abstract

BACKGROUND: Thoracic actinomycosis is a relatively uncommon anaerobic infection caused by Actinomyces israelii. There have been only a few case reports of endobronchial actinomycosis. The aim of this study was to evaluate the clinical manifestation and treatment of endobronchial actinomycosis. MATERIAL AND METHODS: Seven patients with endobronchial actinomycosis, who were diagnosed in the past 10 years, were retrospectively reviewed.
RESULTS
Cough and sputum were the most common symptoms. The chest radiograph and computed tomography showed necrotic consolidation (n=3), atelectasis (n=2), mass (n=1) and an endobronchial nodule (n=1). Proximal broncholithiasis was observed in five patients. All cases were initially suspected to have either lung cancer or tuberculosis. In these patients, the median duration of intravenous antibiotics was 3 days (range 0-12 days) and the median duration of oral antibiotics was 147 days (range 20-412 days). Two patients received oral antibiotic therapy only. There was no clinical evidence of a recurrence.
CONCLUSION
Endobronchial actinomycosis frequently manifests as a proximal obstructive calcified endobronchial nodule that is associated with distal post-obstructive pneumonia. The possibility of endobronchial actinomycosis is suggested when findings of broncholithiasis are present at chest CT. The traditional recommendation of 2-6 weeks of intravenous antibiotics and 6-12 months of oral antibiotic therapy are not necessarily essential in all cases of endobronchial actinomycosis.

Keyword

Actinomycosis; Bronchoscopy; Anti-bacterial agents

MeSH Terms

Actinomyces
Actinomycosis*
Anti-Bacterial Agents
Bronchoscopy
Cough
Diagnosis*
Humans
Lung Neoplasms
Pneumonia
Pulmonary Atelectasis
Radiography, Thoracic
Recurrence
Retrospective Studies
Sputum
Tomography, X-Ray Computed
Tuberculosis
Anti-Bacterial Agents
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