Pulmonary Pneumatocele in a Pneumonia Patient Infected with Extended-Spectrum β-Lactamase Producing Proteus mirabilis.

Abstract

Pulmonary pneumatoceles are air-filled thin-walled spaces within the lung and are rare in adult cases of pneumonia. We report the case of a 74-year-old male who was admitted with a cough and sputum production. He had been treated with oral dexamethasone since a brain tumorectomy 6 months prior. Contrast-enhanced computed tomography (CT) of the chest revealed a large pneumatocele in the right middle lobe and peripheral pneumonic consolidation. Bronchoalveolar lavage was performed; cultures identified extended-spectrum β-lactamase (ESBL) producing Proteus mirabilis. A 4-week course of intravenous ertapenem was administered, and the pneumatocele with pneumonia resolved on follow-up chest CT. To the best of our knowledge, this is the first reported case of pulmonary pneumatocele caused by ESBL-producing P. mirabilis associated with pneumonia.

• Authors: Sung Hyeok Ryou, Jong Wook Bae, Hyun Jin Baek, Doo Hyuk Lee, Sang Won Lee, Gyu Ho Choi, Kyu Hyung Han, Se Weon Kim, Hyunbeom Kim, Goohyeon Hong
• Journal: Tuberculosis and respiratory diseases (Tuberc Respir Dis (Seoul)) Vol. 78 Issue 4 Pg. 371-4 (Oct 2015) ISSN: 1738-3536 [Print] Korea (South)
• PMID: 26508927 (Publication Type: Journal Article)