Pulmonary tuberculosis: its pathology, nature, symptoms, diagnosis, prognosis, causes, hygiene, and medical treatment . inclosing it. This is accomplished by ulceration,—a con-sequence of inflammation in the tissue over the tuberculous matter,—which resembles that for the discharge of common pus. When the liquefied matter is discharged through the intesniments. it PATHOLOGY. 17 leaves a cavity or vomica. When a cavity is formed, it will eitherenlarge, by the formation and discharge of fresh tuberculous depositsadjacent to it, or it may be healed by its boundaries being infiltratedby the produc
Pulmonary tuberculosis: its pathology, nature, symptoms, diagnosis, prognosis, causes, hygiene, and medical treatment . inclosing it. This is accomplished by ulceration,—a con-sequence of inflammation in the tissue over the tuberculous matter,—which resembles that for the discharge of common pus. When the liquefied matter is discharged through the intesniments. it PATHOLOGY. 17 leaves a cavity or vomica. When a cavity is formed, it will eitherenlarge, by the formation and discharge of fresh tuberculous depositsadjacent to it, or it may be healed by its boundaries being infiltratedby the products of organizable materials. But, alas for mankind ! thelatter result does not often occur. At the borders and base of thecavity we commonly find secondary tubercles, which follow the samecourse of the primary, liquefy, and are discharged into the cavity,which they thus increase by adding their cavities to it. When thesecavities are very numerous, and are situated in vital organs, theyproduce wasting of the body, with hectic fever, night-sweats, anddiarrhoea, which speedily prove fatal to the patient. Fig. A section of lung magnified 250 diameters, showing the pulmonary air-vesselsfilled with tubercular corpuscles. II. Pulmonary Tuberculosis. In the brief outline of tubercular disease just given, we have pre-sented a description of those changes which take place in the lungs inevery true case of phthisis pulmonalis. It is in the superior lobes ofthe lungs that this matter is commonly deposited. It is here that thetubercles are the largest and most numerous. It is in these parts thatthey first ripen and grow soft, and become ready for expulsion ; henceit is here that we have the most frequent, the most numerous, andthe largest cavities in the lungs, the number and magnitude of themdiminishing: from the summit downwards. 13 PULMONARY TUBERCULOSIS. These pulmonary cavities vary much in size; sometimes they arenot as big as a pea, then, again, they are found large enough to
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