Which CT findings are characteristic of centrilobular emphysema?

Updated: Mar 13, 2019
  • Author: Ali Nawaz Khan, MBBS, FRCS, FRCP, FRCR; Chief Editor: Eugene C Lin, MD  more...
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Mild to moderate degrees of centrilobular emphysema are depicted on HRCT as small, round areas of low attenuation, several millimeters in diameter, grouped near the center of secondary pulmonary lobules, with no discernible walls in many cases. Although the centrilobular location of these lucencies cannot always be appreciated on HRCT, lung parenchymal changes are diagnostic of emphysema. [37]

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