The Origin of Lung Cysts in Childhood

bronchiectasis of medium bronchi.Most of the earlier writers on cysts in the lung did not distinguish between solitary or multiple round cysts and the lesser degrees of bronchial dilatation which are now called bronchiectasis.Laennec (1821) described cases of dilatation of the bronchi in which there were marked inflammatory changes and a history of chronic pulmonary infection.The view that bronchiectasis is an acquired condition has now almost entirely replaced the congenital hypothesis, and has resulted in the absurd popular assumption that bronchial dilatations from cylindrical to gross saccular are of acquired origin, but the slightly greater degree in round cysts 504 by copyright.