OBJECTIVE: The aims of this study were to evaluate the role of high resolution computed tomography of the thorax in detecting abnormalities in chronic @entity748 @entity1 and to determine the behavior of these lesions after at least one year. METHOD: Fourteen persistent @entity748 @entity1 with a mean forced expiratory volume in 1-second that was 63% of predicted and a mean forced expiratory volume in 1-second /forced vital capacity of 60% had two high resolution computed tomographies separated by an interval of at least one year. RESULTS: All 14 @entity1 had @entity66 . The most common abnormality was bronchial wall thickening, which was present in all @entity1 on both computed tomographies. Bronchiectasis was suggested on the first computed tomography in 5 of the 14 (36%) @entity1 , but on follow-up, the @entity384 had disappeared in 2 and diminished in a third. Only one @entity1 had any emphysematous changes; a minimal persistent area of @entity2415 was present on both scans. In 3 @entity1 , a "mosaic" appearance was observed on the first scan, and this persisted on the follow-up computed tomography. Two @entity1 had persistent areas of @entity3355 . In a third @entity1 , mucus plugging was detected only on the second computed tomography. CONCLUSIONS: We conclude that there are many abnormalities on the high resolution computed tomography of @entity1 with persistent @entity565 . Changes suggestive of @entity4595 , namely @entity384 , frequently resolve spontaneously. Therefore, the diagnosis of @entity4595 by high resolution computed tomography in @entity748 @entity1 must be made with caution, since @entity384 can be reversible or can represent false dilatation. Nonsmoking chronic @entity748 subjects in this study had no evidence of centrilobular or panacinar @entity2415 .

Persistent XXXX in adults: comparison of high resolution computed tomography of the lungs after one year of follow-up.

@entity748 :: ('MESH:D013224', 'Disease') :: ['asthmatic'] @entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity66 :: ('MESH:D004194', 'Disease') :: ['abnormalities on both scans'] @entity3355 :: ('MESH:D014095', 'Disease') :: ['mucoid impaction'] @entity384 :: ('MESH:D002311', 'Disease') :: ['bronchial dilatation'] @entity565 :: ('MESH:D001249', 'Disease') :: ['asthma'] @entity2415 :: ('MESH:D004646', 'Disease') :: ['paraseptal emphysema', 'emphysema'] @entity4595 :: ('MESH:D001987', 'Disease') :: ['bronchiectasis']
@entity565 :: (MESH:D001249,Disease) :: ['asthma']
