Background: Eosinophilic pleural effusions are defined by an eosinophil count ≥10% in pleural fluid and represent approximately 10% of exudative pleural effusions.
Observation: We report the first case of eosinophilic pleural effusion occurring due to lisinopril treatment. Improvement after drug discontinuation and recurrence after reintroduction indicated that lisinopril was responsible for the effusion.
Conclusion: The main causes of eosinophilic pleural effusions are infections including tuberculosis, and malignancies. Drug-induced eosinophilic pleural effusions have only rarely been described, mainly caused by cardiovascular or neuropsychiatric medicines.
Keywords: Angiotensin converting enzyme inhibitor; Eosinophilic pleural effusion; Iatrogenic pleural effusion; Inhibiteur de l’enzyme de conversion de l’angiotensine; Lisinopril; Pleural fluid; Pleurésie iatrogène; Pleurésie à éosinophile; Épanchement pleural.
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