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Introduction
Chronic eosinophilic pneumonia (CEP) is a rare disease accounting for 0%-2.5% of cases in different registries of interstitial lung diseases. 1 Photographic negative of pulmonary oedema or reverse bat wing appearance is pathognomic of CEP, but seen in less than one-third of the patients. CEP is a rare disorder of unknown cause associated with subacute or chronic respiratory symptoms, characterised by the abnormal accumulation of eosinophils in the lungs. 2 It occurs predominantly in women and non-smokers, with peak incidence in the fifth decade with a mean age of 45 years. Approximately half of these patients have a history of pre-existing asthma or atopic disorders. Most common symptoms include cough, dyspnoea and fever. 3 Diagnosis of CEP is made based on a constellation of characteristic clinical, radiographic patterns along with peripheral/pulmonary eosinophilia. 2
Case report
A 42-year-old woman with a past medical history of allergic rhinitis was admitted with intermittent cough and shortness of breath of 2 months. At the time of presentation, physical examination was significant for the presence of crackles in the upper lung fields. Complete...