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1 Clinical Fellow of the American Cancer Society, Inc.
2 Fellow in Radiology
Two cases of atresia of the apical-posterior bronchus of the left upper lobe are reported. Roentgenograms show emphysema of the left upper lobe. Slight distention of the bronchus by mucus immediately beyond the point of atresia and the presence of an oval, mall-like lesion are characteristic and were roentgenographically demonstrable in both cases. The bronchi distal to the area of atresia are normal in distribution. The condition can be recognized roentgenographically; bronchography is necessary if the characteristic bronchial distention and "mass" are absent.
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