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Unformatted text preview: tion with flattened diaphragms and vascular markings are diminished. Parenchymal bullae or subpleural blebs are pathognomonic of emphysema. In bronchitis, chest radiograph shows in-creased interstitial markings (dirty lungs), especially at bases, and the diaphragm is not flattened. Nonspecific perobronchial and perivascular markings are seen with chronic bronchitis....
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- Spring '09