Anti-
IgE therapy, using recombinant humanized anti-
IgE antibodies, is clinically effective in
patients with
eosinophil-related disorders such as allergic
asthma,
allergic rhinitis, and
chronic urticaria. Chronic
eosinophilic pneumonia tends to respond promptly to systemic
corticosteroid therapy, however;
relapses are common following
corticosteroid tapering. We treated two
patients (17- and 19-yr-old
males) of chronic
eosinophilic pneumonia whose symptoms were
cough and
dyspnea on exertion. The symptoms were recurrent while tapering off
corticosteroid. They were treated with anti-
IgE antibody without
recurrence for 2 yr and 15 months. Here, we first describe clinical experience of the 2 cases of chronic
eosinophilic pneumonia.