. Physical diagnosis . Fig. 237.—Radiograph of Thoracic Aneurism, RADIOSCOPY OF THE CHEST. 531 scopic work emphysema is a boon and a blessing, for it renders thecardiac outlines more distinct than usual. Hence, for determiningthe size and position of the heart in such cases, the arrays give. Fig. 238.—Right-sided Pneumothorax seen from liehind. The collapsed right lung is seenagainst the spinal column and surrounded by an unnaturally bright area corresponding tothe empty thoracic cavity. The shadow of the heart appears vaguely on the left side of thespine. genuine assistance, as they also do w
. Physical diagnosis . Fig. 237.—Radiograph of Thoracic Aneurism, RADIOSCOPY OF THE CHEST. 531 scopic work emphysema is a boon and a blessing, for it renders thecardiac outlines more distinct than usual. Hence, for determiningthe size and position of the heart in such cases, the arrays give. Fig. 238.—Right-sided Pneumothorax seen from liehind. The collapsed right lung is seenagainst the spinal column and surrounded by an unnaturally bright area corresponding tothe empty thoracic cavity. The shadow of the heart appears vaguely on the left side of thespine. genuine assistance, as they also do when mapping out the heart inwomen with large breasts and fat chest walls. 3. Central Pneumonia. —Williams and others have succeededin identifying foci of solidification beneath the surface of the lungswhen no other physical signs could be obtained. It must be re- 532 PHYSICAL DIAGNOSIS. membered, however, that congestion of the lung, oedema, atelec-tasis, and pleural thickening produce shadows similar to those ofsolidified lung. 4. Tuberculosis.—It is still a matter of doubt whether tubercu-lous foci can be recognized by the fluoroscope before the disease hasprogressed sufficiently to produce localized rales, diminished breathsounds, or restriction of Littens phrenic phenomenon
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