Abstract
We report a case of pulmonary actinomycosis diagnosed after left pneumonectomy for recurrent hemoptysis. A 62-year-old man presented with hemoptysis despite arterial embolization. We performed a left pneumonectomy, and the histological diagnosis was pulmonary actinomycosis. Pulmonary actinomycosis is a chronic inflammatory granulomatous disease caused by anaerobic bacteria; however, microbiological diagnosis is difficult. Although these anaerobic bacteria exhibit sensitivity to penicillin, they cause intractable hemoptysis through symbiosis with resistant bacteria; thus, they frequently necessitate surgical intervention. We report the clinical course, surgical procedure, and pathological findings of this case, along with a discussion of the literature.
