[A case of thoracic actinomycosis in the left lung coexisting with pulmonary squamous cell carcinoma in the right lung].

An 80-year-old man was admitted to our hospital with chest pain. Chest computed tomography (CT) showed masses in both lung fields. The findings from a biopsy specimen of the left chest wall showed radially filamentous microorganisms, therefore a diagnosis of thoracic actinomycosis was made.

[Clinical and radiological features of tuberculous pneumonia in patients with emphysema].

Purpose: To elucidate the clinical and radiological features of tuberculous pneumonia in patients with pulmonary emphysema.

Material And Method: Three emphysematous cases diagnosed with tuberculous pneumonia are clinically and radiologically reviewed.

Result: Case 1 was a 62-year-old male with an infiltrate in the right upper lobe.

[Two cases of respiratory infection complicating treatment with infliximab].

Infliximab, an anti-TNF-alpha agent, is highly effective against rheumatoid arthritis and Crohn's disease. However, respiratory infection can occur as a complication. We report two cases complicated by respiratory infection following administration of infliximab.

[A case of recurrent Helicobacter cinaedi-associated bacteremia in a small cell lung cancer patient during chemotherapy].

A 46-year-old man was admitted to our hospital, because of cough and exertional dyspnea. We diagnosed small cell lung cancer, clinically staged as T2N3M0, limited disease. Radiation therapy was performed at first to relieve the severe stenosis of the proximal airway, followed by anti-cancer chemotherapy.

[A case of salazosulfapyridine-induced pneumonitis presenting with multiple pulmonary nodules and lymphadenopathy].

We report a rare case of drug-induced pneumonitis, probably caused by salazosulfapyridine, showing a radiographic pattern of multiple pulmonary nodules and lymphadenopathy. An 18-year-old woman was admitted to our hospital because of fever, skin rash, dry cough and dyspnea on exertion. She had been given salazosulfapyridine for two weeks to treat Crohn's disease.

[A case of bronchial ulcer due to infection by Mycobacterium abscessus].

We present a rare case of tracheobronchitis caused by Mycobacterium abscessus. The patient was a 79-year-old man with a previous history of tuberculosis. For smear examinations, he repeatedly expectorated many acid-fast bacilli.