Clinical lectures on the principles and practice of medicine . Wskr-m-- ? - 11111 littiIIP ; ??.••;:- §lff» y-ch::^ mwmm *M: ,!M% --?? : n Jllf *t mm m Fig. 457. vclved; their extremities are among the first structures affected; andas the tuberculosis proceeds, all the appearances characteristic of chronic Fig. 457. Section of a lung in the first stage of Phthisis Pulmonalis. Ulcerativesoftening is commencing at the apex. Tioo-thirds the real size. PHTHISIS PULMONALIS. 735 bronchitis are produced. As the ulcerative process extends, the lung ismore and more destroyed, the excavations become lar
Clinical lectures on the principles and practice of medicine . Wskr-m-- ? - 11111 littiIIP ; ??.••;:- §lff» y-ch::^ mwmm *M: ,!M% --?? : n Jllf *t mm m Fig. 457. vclved; their extremities are among the first structures affected; andas the tuberculosis proceeds, all the appearances characteristic of chronic Fig. 457. Section of a lung in the first stage of Phthisis Pulmonalis. Ulcerativesoftening is commencing at the apex. Tioo-thirds the real size. PHTHISIS PULMONALIS. 735 bronchitis are produced. As the ulcerative process extends, the lung ismore and more destroyed, the excavations become larger and morenumerous (Figs. 458, 459), until at length it can no longer carry on itsimportant functions, and the patient dies, or the fatal result, as verycommonly happens, is hastened by disease in other organs. The ulcerative or destructive tendency of the tubercular exudation. Fig. 458. has generally been supposed to be its chief characteristic; but there are Fig. 458. Section of a lung in the second stage of Phthisis Pulmonalis. Tubercleis extensively infiltrated in the upper lobe, and a considerable cavity has formed. Two-thirds the real size. 736 DISEASES OF THE RESPIRATORY SYSTEM. very few cases in which its progress is uniform. It is continuallychecked, and for a time slumbers; and all morbid anatomists haverecognised, even in the worst specimens of tubercular lungs, numerouscicatrices and evidences of attempts to heal. These attempts are more orless perfect, and when ineffectual, it is owing to the circumstance that asone portion of lung cicatrizes, another becomes the seat of recent tubercle.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectmedicine, bookyear187
