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Updated: Mar 22, 2026

Long Term Chronic Pseudomonas aeruginosa Airway Infection in Mice
Published on: March 17, 2014
Pulmonary actinomycosis presenting as post-obstructive pneumonia
K Kassab1, M Karnib2, P K Bou-Khalil3
1Department of Internal Medicine, Indiana University School of Medicine, 1120W. Michigan St. CL 626, Indianapolis, IN 46202, USA.
Abstract:
Actinomycosis is a chronic suppurative infection caused by filamentous Gram-positive bacilli, leading to a purulent discharge due to sulfur granule formation. Thoracic actinomycosis represents around 20% of Actinomyces infections, with endobronchial involvement being fairly uncommon. Pulmonary actinomycosis should be considered in the differential diagnosis of non-resolving lobar pneumonia or a lobar mass suspicious for malignancy on endobronchial biopsy. A case of endobronchial actinomycosis presenting as post-obstructive pneumonia and mimicking right upper lobe endobronchial carcinoma, which was associated with foreign body aspiration, is reported here.
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