Abstract
A 40-year-old man presented recurrent cough and bloody sputum for 4 months. Chest X-ray showed a large mass in the right upper lobe. Histopathologic examination of tissue from percutaneous biopsy of the lesion revealed actinomycotic granules and branching filamentous bacteria, and therefore pulmonary actinomycosis was diagnosed. These findings suggest that pulmonary actinomycosis should be included in the differential diagnosis of a mass on a chest X-ray film.
Highlights
Actinomyces spp are facultative anaerobic gram-positive, filamentous, bacteria that normally colonize the mouth, colon, and urogenital tract
Histopathologic examination of tissue from percutaneous biopsy of the lesion revealed actinomycotic granules and branching filamentous bacteria, and pulmonary actinomycosis was diagnosed. These findings suggest that pulmonary actinomycosis should be included in the differential diagnosis of a mass on a chest X-ray film
He received oral amoxicillin 3 g daily for 12 months followed by doxycycline 200 mg daily for 6 months
Summary
Actinomyces spp are facultative anaerobic gram-positive, filamentous, bacteria that normally colonize the mouth, colon, and urogenital tract. The adjacent tissues will become infected only if there is a loss of mucosal integrity [1]. Actinomycosis is a rare disease, characterized by local suppuration and an extensive fibro-inflammatory process. The cervicofacial and pelvic areas are the most commonly areas affected, lung localization is much rare [2]
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