[A case of acute eosinophilic pneumonia with acute onset of dyspnea].

A 16-year-Old boy was admitted with acute onset of fever, cough, and dyspnea. Chest radiography showed diffuse infiltrated shadow and right pleural effusion. BALF revealed a high level of eosinophils (56.8%), and TBLB specimen showed infiltration of inflammatory cells, chiefly eosinophils. Symptoms and radiographic findings resolved spontaneously within a few days after admission. Acute eosinophilic pneumonia was diagnosed as in the case reported by Allen et al. However, the present patient had a high IgE level and history of atopic allergic rhinitis. In more than one third of previously reported cases in Japan, there was a history of atopy, unlike in Allen's report.