Air trapping on expiratory high-resolution CT scans in the absence of inspiratory scan abnormalities: correlation with pulmonary function tests and differential diagnosis.

摘要: We wish to describe the differential diagnosis and pulmonary function correlates of patients with normal findings on inspiratory high-resolution CT (HRCT) scans who showed air trapping expiratory scans.HRCT in 273 consecutive suspected diffuse lung disease were reviewed. HRCT consisted at 1- 2-cm intervals three levels. Studies considered show divided into two groups, one having abnormal scans. Pulmonary test results these groups compared a group had scans.Forty-five Of 45 patients, 36 (bronchiectasis, bronchiolitis obliterans, asthma, chronic bronchitis, cystic fibrosis). In remaining nine inspirator...