Normal Chest Roentgenograms in Chronic Diffuse Infiltrative Lung Disease

摘要: Abstract We undertook this study to determine the prevalence of normal roentgenograms in chronic diffuse infiltrative lung diseases. Of 458 patients with such disorders histologically confirmed, 44, or 9.6 per cent, had pre-biopsy films. In group x-ray films, desquamative interstitial pneumonia, sarcoidosis and allergic alveolitis were most frequent diagnoses. Dyspnea was principal complaint, fine rales common. The vital capacity reduced 57 single-breath diffusing 71 cent. half, histologic changes functional impairment moderately severe. Films may be cases because isolated foci are too small few, intra-alveolar disease cast no discrete shadows lesions primarily affect airways blood vessels. Patients chest mechanics breathing but impaired gas exchange should have biopsy for early diagnosis...