Pulmonary actinomycosis is a rare infectious disease that can be difficult to diagnose due to nonspecific imaging abnormalities and to a need for repeated lung sampling by CT-guided biopsy or bronchoscopy. It may present with hemoptysis, which can occur with or without antibiotic therapy and bronchial artery embolization may be required. We report here a case of pulmonary actinomycosis with imaging by thoracic CT, digital subtraction angiography, and pathological specimens.
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