Endobronchial actinomycosis simulating endobronchial tuberculosis: A case report

We report a case of a 70-year-old woman who presented with mild exertional dyspnea and cough. Fiberoptic bronchoscopic findings revealed an endobronch ial polypoid lesion with stenotic bronchus. The lesion was very similar to endobronchial tuberculosis. Histologic examination of the biopsy specimen d emonstrated Actinomyces infection. There was a clinical response to intrave nous penicillin therapy. Primary endobronchial actinomycosis must be consid ered in the differential diagnosis of an endobronchial lesion, especially e ndobronchial tuberculosis in Korea.