Unilateral pulmonary collapse in asthmatics.

Abstract
Five asthmatic patients developed collapse of 1 lung. Of the patients, 3 were children and 3 of the 5 had repeated episodes of atelectasis. Episodes of atelectasis were usually associated with localized chest pain, which was not pleuritic in character, and with breathlessness, but without wheezing. They were not related to clinically apparent respiratory infections or to deterioration of the underlying asthma. The cause is obscure, but re-expansion seems to by hastened by oral corticosteroid therapy.