• Young Shin Kim, Ju Hyun Suh, Seung Min Kwak, Jeong Seon Ryu, Chul Ho Cho, Chan Sup Park, and Soo Kee Min.
• Department of Internal Medicine, College of Medicine, Inha University, Inha General Hospital, Songnam, 7336 Tae Pyuong-4 Dong, Sujong-Ku, Songnam, Kyongkido 461-712, Korea.
• Korean J. Intern. Med. 2002 Sep 1;17(3):207-10.

AbstractActinomycosis is a slowly progressive infectious disease caused by an anaerobic and microaerophilic bacteria that colonizes the face, neck, lung, pleura and the ileocecal region. There have been a few cases of this disease which have involved in the lung but one very rare case has been reported. We report a case of foreign body-induced endobronchial actinomycosis mimicking bronchogenic carcinoma in a 69-year-old man. On admission, the patient presented with weight loss, cough and hemoptysis. The fiberoptic bronchoscopy revealed a soft tissue mass, with a partial occlusion of the left upper bronchus, which resembled bronchogenic carcinoma. Contrary to the first impression, the biopsy of the bronchus revealed the mass lesion to be an actinomycotic infection involving the bronchus. After the confirmation of the lesion, treatment with penicillin was initiated. The follow-up bronchoscopy revealed an aspirated fish bone at the site of infection. The foreign body was safely removed.

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