Manual of pathological anatomy . the bronchi, to which Laennecthe first to draw attention, and which, though of extreme was importance in a nosological point of view, has hitherto been treated rather as a question aff*ect- FiG. 100. ing the patholo^^ist than thepractitioner. It is dilatationof the bronchi or bronchiec-tasis.* By Laennec it wasattributed exclusively to anaccumulation of mucus in theramifications of the dilatedjjortion ; but, as Dr. C. J. justly observes, ifthis were the cause we shouldnot, as we do, hear the airpenetrate freely into thedilated portions. There may,und
Manual of pathological anatomy . the bronchi, to which Laennecthe first to draw attention, and which, though of extreme was importance in a nosological point of view, has hitherto been treated rather as a question aff*ect- FiG. 100. ing the patholo^^ist than thepractitioner. It is dilatationof the bronchi or bronchiec-tasis.* By Laennec it wasattributed exclusively to anaccumulation of mucus in theramifications of the dilatedjjortion ; but, as Dr. C. J. justly observes, ifthis were the cause we shouldnot, as we do, hear the airpenetrate freely into thedilated portions. There may,undoabtedly, be various effi-cient causes at play in theproduction of this diseasedstate, both of a mechanicaland of a more dynamicalcharacter. The most pal-pable instance of the formeris presented to us in the caseof an enlarged bronchialgland, whether it contains cretaceous or simply scrofulous matter,compressing a bronchus. Here, the free exit of the respired atmo-sphere being prevented, an accumulation of air might be supposed. Dilated broTichi, fi om a female aged fifty-two, who had ^^ufi?ered from chronic pneu-monia and bronchitis for th^ee years; thepulmonary tissue intervening between thebronchi 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.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectanatomy, booksubjectp
