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Listeriosis is a infectious disease which can affect to immunosuppressed patients. We report a case of pneumonia by Listeria monocytogenes as unusual presentation, because the central nervous system infections are the most common clinical entities. Many cases reported had a underlying disease, most commonly Hodgkin's disease, and had received immunosuppressive therapy. In our case the patient was considered to be immunosuppressed by had received corticosteroids and had been diagnosed of stage IIIa squamous cell carcinoma 3 years ago. The illness began 48 hours before the admission to hospital, he had fever, mental confusion and the location of pneumonia was right lower lobe, 24 hours later the patient die.

Foreign body aspiration requires emergency bronchoscopic examination when the product is chemically active. We describe the case of a female patient who aspirated a ferrous sulfate tablet that, in spite of being extracted immediately, caused lesions that persisted in the bronchial tree for 6 weeks. We then discuss the potential of ferrous sulfate substance to cause damage to the tracheobronchial tree.