. Roentgen interpretation; a manual for students and practitioners . Fig. 109.—Hydropneumothorax. This plate was taken with the patient fluid level is well shown at about the middle of the left Fig. 110.—Old empyema, with calcification in the right pleura. LUNG FIELDS 135 of lung marking. In the presence of pleural adhesions where thecollapse is incomplete, the shadow of the pnemnothorax may bedivided by bands which give it a sacculated appearance and pneumo-thorax and lung tissue may overlap each other. A small localizedpneumothorax may be difficult to detect unless it is
. Roentgen interpretation; a manual for students and practitioners . Fig. 109.—Hydropneumothorax. This plate was taken with the patient fluid level is well shown at about the middle of the left Fig. 110.—Old empyema, with calcification in the right pleura. LUNG FIELDS 135 of lung marking. In the presence of pleural adhesions where thecollapse is incomplete, the shadow of the pnemnothorax may bedivided by bands which give it a sacculated appearance and pneumo-thorax and lung tissue may overlap each other. A small localizedpneumothorax may be difficult to detect unless it is seen in profile;otherwise it appears as an area of somewhat increased radiabilityoverlaid by normal lung markings. This should not be confusedwith large cavities which occur in the substance of the lung and mayor may not have well-defined borders. Calcifications frequently appear in the pleura in a form of raggedplaques or lines which occur in any portion of it.
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