We describe two cases of acute eosinophilic pneumonia (AEP) presenting
with high fever and hypoxia of acute onset with bilateral interstitia
l infiltrates on chest roentgenograms. Diagnosis was confirmed in each
case by bronchoalveolar lavage and transbronchial lung biopsy in whic
h the pathologic process was limited to the lung interstitium. High-re
solution computed tomography (HRCT) of the thorax at the height of the
disease process revealed peripheral ground-glass opacities along the
bronchovascular bundles. Symptoms and radiologic abnormalities resolve
d spontaneously within two weeks. The HRCT-findings may reflect the pa
thologic process in AEP and the ground-glass opacities likely indicate
spontaneous resolution without corticosteroid therapy.