American practitioner . ynat power of resistance possessed by children. . After the seventh year tuberculosis of the lungs i- a ?tains the greatest importance. . In children over 8 years of age chronic tuberculosis of the lungs tending? covery i- no longer rare. Most frequently there are found penally disseminated lobular or confiut [probably due to inhal infection bj wa) of the circulation 1 There i u infiltration start- i) from the lulus and spreading over an entit ibly starti th,- hilus [ilituls and spreadin 1 bai il / the lymphati 282 The American Practitioner ing the air vesicles and s
American practitioner . ynat power of resistance possessed by children. . After the seventh year tuberculosis of the lungs i- a ?tains the greatest importance. . In children over 8 years of age chronic tuberculosis of the lungs tending? covery i- no longer rare. Most frequently there are found penally disseminated lobular or confiut [probably due to inhal infection bj wa) of the circulation 1 There i u infiltration start- i) from the lulus and spreading over an entit ibly starti th,- hilus [ilituls and spreadin 1 bai il / the lymphati 282 The American Practitioner ing the air vesicles and so into the lymph channels and connectivetissue spaces of the alveolar walls. From the frequency with which enlarged bronchial glands andtuberculous thickening in the adjacent pulmonary tissues are foundin persons exposed to dust inhalation, it is conceivable that the tu-bercle bacilli may in many cases reach the bronchial glands by beingactually attached to the organic particles, which would thus act as the. s. F. Fig. 2 Microscopical section through same lung shown in Fig. I through point S,showing great increase of fibrous tissue around bronchial cartilage (cartilagebeing transparent to X-rays), l. Healthy lung. s. Stroma, c. Bronchialcartilage, f. Fibrous tissue sheath (tuberculous giant celled systems some-times present). (By kind permission of Dr. Jordan.) direct carriers of the infective virus. At the same time the associa-tion of silicosis with tuberculosis may also be explained by the theorythat inorganic particles—particularly when of a sharp, angular char-acter—may cause sufficient irritation of the glandular and pulmonarytissues to render the resulting inflammatory area a suitable nidusfor the growth and development of the bacillus of tuberculosis. i. Aki [( 1 HE PRIMARY S] M. OF ( HRONIC PI i HON \k\APEX V. ilii Hitherto the apex has always been regarded as the most frequentprimar) focus of pulmonary tuberculosis. In [880 Sir James King-ston Fowler* stated
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmedicine, bookyear191
