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TRANSLUCENT HEMITHORAX ON CXR |
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unilateral pulmonary oligaemia: |
pulmonary embolism congenital pulmonary artery hypoplasia |
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external compression of pulmonary artery: aortic aneurysm bronchial carcinoma fibrosing mediastinitis |
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other / miscellaneous: |
obstructive hyperinflation (foreign body)'unilateral pulmonary emphysema' large pneumothorax (+ mediastinal shift if tension) large bulla lower lobe collapse (hilum pulled downwards)post-mastectomy congenital absence of pectoralis major MacLeod's syndrome rotated CXR or kyphoscoliosis |
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