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Cigarette smoking-induced acute eosinophilic pneumonia: A case report
Xing Liu1, Wangyuan Sun1, Wenshu Meng1
1Department of Respiratory Medicine, The Affiliated Suqian Hospital of Xuzhou Medical University, Suqian.
Rationale:
Acute eosinophilic pneumonia (AEP) is a rare pulmonary disease, which is characterized by diffuse pulmonary eosinophilia. The pathogenesis remains unknown. Here we report a patient with AEP following a recently acquired habit of smoking.
Patient Concerns:
A 21-year-old female presented with fever, dry cough, and acute hypoxic respiratory distress for 2 days. Chest computed tomography showed bilateral ground glass opacities, patchy nodules, and pleural effusions. Blood tests showed a gradually raised peripheral eosinophils level.
Diagnoses:
Bronchoalveolar lavage fluid revealed marked elevation of eosinophils. She was diagnosed with AEP.
Interventions:
Systemic methylprednisolone was immediately used for treatment.
Outcomes:
Her clinical symptoms and chest radiographs improved promptly after treatment.
Lessons:
Cigarette smoking might be an underlying triggering factor of AEP. Diffuse alveolar infiltrates and a gradually increasing peripheral eosinophilia should raise the concern especially in recent smoking patients.
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