[Chronic eosinophilic pneumonia. An analysis of 4 cases].

Chronic eosinophilic pneumonia (CEP) is characterized by non-specific clinical presentation, interstitial radiological signs, peripheral acini and pulmonary infiltration by eosinophils, accompanied or not by peripheral eosinophilia. Response to treatment with steroids is spectacular. We describe 4 patients with CEP, one diagnosed by response to treatment and the others by bronchoalveolar lavage (BAL). No patient had asthma; 1 also had peripheral eosinophilia. All received long-term treatment with steroids, and there were no relapses. Response to treatment was slow in 2 patients, but obliterans bronchiolitis with or without organizing pneumonia could not be demonstrated. We emphasize the safety and efficiency of BAL for diagnosis of CEP.