Demura Y, Ishizaki T, Nakanishi M, Ameshima S, Itoh H
Department of Respiratory Medicine, Faculty of Medical Sciences, University of Fukui Hospital, Fukui, Japan.
BMJ Case Rep. 2009;2009. doi: 10.1136/bcr.09.2008.0882. Epub 2009 Feb 2.
A 69-year-old male non-smoker with a history of atopic asthma presented with symptoms suggestive of chronic obstructive pulmonary disease and this appeared to be corroborated by lung function testing and a chest radiograph. However, a chest CT showed no evidence of pulmonary emphysema and instead demonstrated free air along the bronchovascular sheaths indicative of pulmonary interstistial emphysema, possibly caused by repeated prior exacerbations of asthma. His lung function tests and symptoms improved within months of being treated for his airways disease but the CT findings were unchanged after 2 years.
一名69岁有特应性哮喘病史的男性非吸烟者，出现提示慢性阻塞性肺疾病的症状，肺功能测试和胸部X光片似乎证实了这一点。然而，胸部CT未显示肺气肿迹象，反而显示沿支气管血管束有游离气体，提示为肺间质性肺气肿，可能是既往哮喘反复加重所致。在接受气道疾病治疗后的数月内，他的肺功能测试和症状有所改善，但两年后CT检查结果未变。
