Pulmonary Pneumatocele in a Pneumonia Patient Infected with Extended-Spectrum β-Lactamase Producing Proteus mirabilis.
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.
Department of Internal Medicine, Dankook University Hospital, Dankook University College of Medicine, Cheonan, Korea.
Sung Hyeok
SH
Ryou
Department of Internal Medicine, Dankook University Hospital, Dankook University College of Medicine, Cheonan, Korea.
Jong Wook
JW
Bae
Department of Internal Medicine, Dankook University Hospital, Dankook University College of Medicine, Cheonan, Korea.
Hyun Jin
HJ
Baek
Department of Internal Medicine, Dankook University Hospital, Dankook University College of Medicine, Cheonan, Korea.
Doo Hyuk
DH
Lee
Department of Internal Medicine, Dankook University Hospital, Dankook University College of Medicine, Cheonan, Korea.
Sang Won
SW
Lee
Department of Internal Medicine, Dankook University Hospital, Dankook University College of Medicine, Cheonan, Korea.
Gyu Ho
GH
Choi
Department of Internal Medicine, Dankook University Hospital, Dankook University College of Medicine, Cheonan, Korea.
Kyu Hyung
KH
Han
Department of Internal Medicine, Dankook University Hospital, Dankook University College of Medicine, Cheonan, Korea.
Se Weon
SW
Kim
Department of Internal Medicine, Dankook University Hospital, Dankook University College of Medicine, Cheonan, Korea.
Hyunbeom
H
Kim
Department of Internal Medicine, Dankook University Hospital, Dankook University College of Medicine, Cheonan, Korea.
Goohyeon
G
Hong
Beta-Lactamase; Pneumonia; Proteus mirabilis