. Elements of pathological anatomy. Anatomy. SECT, !•] BRONCHIA J OBLITERATION. 31 from the researches of this distinguished physician, that nar- rowing and obhteration of the air-tubes are much more com- mon than has hitherto been supposed by writers on thoracic diseases; but what the probable proportion is, in a given number of subjects, is a circumstance which has not been determined. This lesion affects principally the smaller bronchise, espe- cially when it is produced by inflammatory irritation, accom- panied with the effiision of plastic lymph. In such cases, the contraction is liable t
. Elements of pathological anatomy. Anatomy. SECT, !•] BRONCHIA J OBLITERATION. 31 from the researches of this distinguished physician, that nar- rowing and obhteration of the air-tubes are much more com- mon than has hitherto been supposed by writers on thoracic diseases; but what the probable proportion is, in a given number of subjects, is a circumstance which has not been determined. This lesion affects principally the smaller bronchise, espe- cially when it is produced by inflammatory irritation, accom- panied with the effiision of plastic lymph. In such cases, the contraction is liable to be mistaken for an obliterated vessel. When, on the other hand, it is caused by the pressure of an external tumor, it occasionally involves the larger-sized branches, or even one of the primitive trunks. Hypertrophied lymphatic ganglions sometimes give rise to an obstruction of this kind, followed by a gradual wasting of the correspond- ing lung. The lesion under consideration is most common in the superior lobe of the pulmonary organs, —a circumstance which is easily explained by the great frequency of tuber- cular disease here, with which it often coex- ists. The number of tubes that may be thus effected is variable ; occa- sionally, only a single one is obliterated; at other times, the^ lesion is ob- servable in three or four ; and, in a few rare cases, all the branches of an entire lobe are implicated. Obliteration of the air- passages presents itself under two varieties of form. In the first, (Fig. 51,) which is b'y far the most common, the tube is uniformly contracted throughout its entire length, being converted into a firm fibro-cartilagi- nous cord, from the sides of which, numerous pro- cesses are detachedjWhich. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Gross, Samuel D. (Samuel David),
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Keywords: ., bookauthorgr, bookcentury1800, bookdecade1840, booksubjectanatomy
