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With the more general use of the roentgen ray during the treatment of cases of pulmonary tuberculosis, especially when serial pictures are taken at intervals of three, six or twelve months, our knowledge and understanding of the process of healing, as well as of destruction in tuberculous disease of the lungs, has been greatly increased. This study has shown us many interesting things, probably among the most important being the fact that tuberculous lesions heal not only by fibrosis with a subsequent permanent scar, but also and very frequently by absorption of the tuberculous deposit without any or only very slight scar tissue formation. It is of interest to know that this fact of the absorption of tuberculous lesions without the formation of scar tissue has been beautifully demonstrated experimentally by Leroy S. Gardner of Saranac Lake. The healing, the formation and the behavior of cavities are also of great
SCHAEFER SW. PULMONARY TUBERCULOSIS: SOME INTERESTING CASES. JAMA. 1927;88(25):1963–1966. doi:10.1001/jama.1927.02680510021008
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