• Jun Hirai, Mao Hagihara, Shusaku Haranaga, Takeshi Kinjo, Hiroe Hashioka, Hideo Kato, Daisuke Sakanashi, Yuka Yamagishi, Hiroshige Mikamo, and Jiro Fujita.
• Department of Infectious Diseases, Respiratory, and Digestive Medicine, Control and Prevention of Infectious Diseases, Faculty of Medicine, University of the Ryukyus, Japan; Department of Clinical Infectious Diseases, Aichi Medical University Hospital, Japan; Department of Infection Control and Prevention, Aichi Medical University Hospital, Japan. Electronic address: j.eichi419@gmail.com.
• J. Infect. Chemother. 2017 Apr 1; 23 (4): 245-249.

AbstractHere we report six cases of daptomycin (DAP)-induced eosinophilic pneumonia (DIEP) encountered at two medical centers and present a review of 43 DIEP patients from 26 studies to compare the clinical characteristics and radiographic findings of acute and chronic eosinophilic pneumonia (AEP; CEP). Four of the six patients did not exhibit respiratory symptoms, and one patient with only fever was misdiagnosed with DAP-induced fever. According to our literature review and the present findings, male sex and old age were dominant risk factors for DIEP. Fever and fine crackles were the most common clinical manifestations. The DAP dose and duration of administration were not significant risk factors for DIEP, and we also could not find any association between allergic predisposition and DIEP. Among the reviewed patients, 51.8% did not show more than 25% eosinophils in bronchoalveolar lavage, which is a criterion for the diagnosis of drug-induced eosinophilic pneumonia. Chest images of all patients showed CEP patterns such as multiple reticulonodular infiltrates in the subpleural region and diffuse bilateral pulmonary infiltrates with ground-glass opacities. However, 66.7% of patients also exhibited pleural effusion, a feature specific to AEP. All patients showed prompt recovery after DAP withdrawal. Our results suggest that clinicians should consider DIEP as a differential diagnosis when patients receiving DAP therapy, particularly men and elderly patients, present with fever, even in the absence of respiratory symptoms. Furthermore, they should be aware that the occurrence of DIEP is independent of the DAP dose and administration duration, and allergic reaction.Copyright © 2016 Japanese Society of Chemotherapy and The Japanese Association for Infectious Diseases. Published by Elsevier Ltd. All rights reserved.

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