. Medical diagnosis for the student and practitioner. Fig. 126.—Unilateral Pulmonary Tuberculosis. Note marked infiltration of rightupper lung field. Pleuro-diaphragmatic adhesions. {Dr. Frank S. Bissell.) remain clear and uninvolved until late in the progress of other chronicinfections. Basal tuberculosis, while it has the same general characteristics, is muchmore difficult to differentiate from other chronic infections. Tuberculosis ROENTGENOGRAPHS EXAMINATION OF LUNGS AND PLEURAE 317 of the base, however, without concomitant involvement of the apex of one ormore lobes, is relatively rare. A
. Medical diagnosis for the student and practitioner. Fig. 126.—Unilateral Pulmonary Tuberculosis. Note marked infiltration of rightupper lung field. Pleuro-diaphragmatic adhesions. {Dr. Frank S. Bissell.) remain clear and uninvolved until late in the progress of other chronicinfections. Basal tuberculosis, while it has the same general characteristics, is muchmore difficult to differentiate from other chronic infections. Tuberculosis ROENTGENOGRAPHS EXAMINATION OF LUNGS AND PLEURAE 317 of the base, however, without concomitant involvement of the apex of one ormore lobes, is relatively rare. Advanced Tuberculosis.—Paradoxical as it may seem, the more advancedstages of tuberculosis sometimes present a roentgen picture less typicaland hence less easv to differentiate than the earlier Fig. 127.—Apical Tuberculosis—Healed or Latent. Note that lesions are closely cir-cumscribed by apparently normal lung. {Dr. Frank S. Bissell.) This is true because the more characteristic changes tend to becomemasked by the effects of fibrosis and mixed infections. Usually, however,the distribution of the lesions points the way to a correct diagnosis or somearea of slight involvement is found where the changes are more typical. Compensatory emphysema frequently exists in some degree, manefesting Emphysema. 3i8 MKDICAL I)IA(;\OSIS itself chiefly by increased translucency of the area so affected. This trans-lucency, when the emphysema is extensive, aids materially in the studyand recognition of the tuberculous foci by lending sharper contrast to the clinicians handicap becomes the advantage of the advanced tuberculosis the greatest value of the roentgen examination
Size: 1416px × 1764px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectdiagnos, bookyear1922
