Elements of pathological anatomy . mucous rhonchus,most distinct at the base or posteriormargin of the lungs; and the sputa,which before were thin, saltish, andslightly glutinous, are now opake,yellowish, and ropy. Occasionally,they are marked with dots of blood,or mixed with pus. In chronic bron-chitis, the expectoration is generallypuriform, and sometimes of a green-ish, dirty greyish, or brownish color,from the admixture of black, pulmo-nary matter. In neither of these com-plaints are the sputa much offensive ;in most cases, indeed, they are per-fectly inodorous. Ulceration of the bronchial
Elements of pathological anatomy . mucous rhonchus,most distinct at the base or posteriormargin of the lungs; and the sputa,which before were thin, saltish, andslightly glutinous, are now opake,yellowish, and ropy. Occasionally,they are marked with dots of blood,or mixed with pus. In chronic bron-chitis, the expectoration is generallypuriform, and sometimes of a green-ish, dirty greyish, or brownish color,from the admixture of black, pulmo-nary matter. In neither of these com-plaints are the sputa much offensive ;in most cases, indeed, they are per-fectly inodorous. Ulceration of the bronchial mucous membrane is less frequent than that ofthe trachea, and still less than that of the larynx. Louis, in the whole of hisresearches, only met with seven cases of this disease. From the observations,however, of Hastings and Andral, it would appear that the lesion is more com-mon than is usually supposed. The ulcers are generally small, clean, superfi-cial, and of a dirty greyish color, with somewhat tumid and reddened 418 AIR-PASSAGES. They seldom extend beyond the mucous and submucous textures, and are rarefymet with in the small bronchial tubes. The symptoms of ulcerated bronchiae differ little from those which have beenenumerated as characterizing trachitis. There is, in general, however, moredifficulty of breathing, more deep-seated pain, more emaciation, and more hecticfever. Dilatation of the bronchiae is frequently met with in old asthmatics, and in children after severe attacks of affection was first described by Laennec,who has given a number of interesting examplesin illustration of its pathology. It presents itselfunder two varieties of form. In the first (), the dilatation is uniform throughout, andmay attain the diameter of a goose-quill or evenof a finger. Sometimes several branches of thesame trunk are thus affected, each terminatingin a sort of cul-de-sac. In other cases, thedilated tube regains its normal caliber, and endsi
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