Manual of pathological anatomy . was much condensed. * Etymology,—/3p67X«, the bronchi, andeKTuo-t?, dilatation, from lKTeivu>, I may take this opportunity of remarking upon the distinction which some authorshave lately made between bronchia and bronchi; it is a source of some confusion, andscarcely warranted by their etyTnology of the words ; if a diminution is required, theverm bronchule is more convenient, and not liable to be mistaken. DILATATIOI^ OF THE BRONCHI. 453 to take place behind the narrowed portal, the channels being pre-vented ever collapsing to the same extent as
Manual of pathological anatomy . was much condensed. * Etymology,—/3p67X«, the bronchi, andeKTuo-t?, dilatation, from lKTeivu>, I may take this opportunity of remarking upon the distinction which some authorshave lately made between bronchia and bronchi; it is a source of some confusion, andscarcely warranted by their etyTnology of the words ; if a diminution is required, theverm bronchule is more convenient, and not liable to be mistaken. DILATATIOI^ OF THE BRONCHI. 453 to take place behind the narrowed portal, the channels being pre-vented ever collapsing to the same extent as a healthy lung. Anyimpediment to the entrance or exit of the air into the lungs willproduce irregular and forcible breathing, and throw a greaterstrain upon those parts especially, which are in the vicinity of theobstacle. One point having yielded, it is quite intelligible that the disten-sion should gradually progress, while, at the same time, it must,in a corresponding ratio, compress and gradually obliterate the Fig. Cretaceous enlargement of a bronchial gland, compressing the right bronchus,which is much dilated beyond the point. surrounding pulmonary tissue. In the majority of instances adiseased condition of the bronchial parietes, if not, as Corrigan hassuggested, of the pulmonary parenchyma itself, precedes theoccurrence of bronchiectasis.* When the changes have taken • Corrigan views the condition of the pulmonary tissues, giving rise to bronchialdilatations, as analogous to cirrhosis of the liver; he considers it the result of the forma-tion of an unyielding fibrous tissue, to which the bronchi become attached, and there-fore incapable of collapsing. 454 DILATATION OF THE BEONCHI. place in the tissues which are likely to give rise to it, any violenteffort to distend the lungs, as in catarrh, bronchitis, or hooping-cough, may be the exciting cause. Forms of Bronchial Dilatation.—The three forms which Laennec*describes have been successively adopted with so
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectanatomy, booksubjectp
