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The CT manifestations of talcosis consist of a fine micronodular pattern, ground-glass attenuation, and emphysema. A significantly increased prevalence of lower lobe panacinar emphysema is seen in IV drug addicts who abuse methylphenidate.

OBJECTIVE. We examined the high-resolution CT findings of adult survivors of bronchopulmonary dysplasia. CONCLUSION. The cardinal CT features of bronchopulmonary dysplasia survivors include multifocal areas of reduced lung attenuation and perfusion, bronchial wall thickening, and decreased bronchus-to-pulmonary artery diameter ratios.