[Eosinophilic pleuritic: An unusual complication of treatment with an angiotensin converting enzyme inhibitor].
Eosinophilic pleural effusions are defined by an eosinophil count ≥10% in pleural fluid and represent approximately 10% of exudative pleural effusions. 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. 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.