A case of chronic idiopathic eosinophilic pneumonia

Eosinophilic lung diseases are defined by a prominent infiltration of the lung parenchyma by eosinophils, which respond dramatically to corticosteroid treatment and generally heal without significant sequelae when treated, out of this, idiopathic chronic eosinophilic pneumonia is characterized by a progressive onset of symptoms over a few weeks or months with cough and increasing dyspnea, malaise, and weight loss. A 42-year-old male, nonsmoker with no known comorbidities, presented with symptoms of breathlessness and cough with expectoration, along with a lack of appetite. The patient had a history of allergic rhinitis and pulmonary tuberculosis, high-resolution computed tomography showed peripheral nodules in upper lobes and a bilateral mosaic pattern of attenuation, complete blood count (CBC) showed 80% eosinophils and an AEC of 26870 BAL analysis showed elevated eosinophils Sputum and BAL analysis did not show the presence of Mycobacterium tuberculosis and hence the patient was diagnosed with idiopathic chronic eosinophilic. Eosinophilic pneumonia and was treated with methylprednisolone 20 mg IV, symptoms resolved completely within 72 h after initiation of steroids, and repeat CBC showed 0.2% eosinophils.