军团杆菌病影像诊断分析研究

Analysis on Imaging Diagnosis of Legionnaires' Disease(LD)

本文对新近的4例LD(有CT—X片对照),结合原报道的2例和文献复习,进行影像诊断分析研究,进一步阐述本病的一些特点:LD的肺实质浸润往往呈进行性改变,提示胸部影像表现的严重程度与临床结果不相关,胸部病灶吸收缓慢,且不完全,常有残留病变,如胸腔积液或胸膜增厚,不规则小片影,肺不张等:游离性胸腔积液或胸膜反应为常见伴随征象,包裹性积液提示混合感染;空洞为免疫抑制患者的显著特点;本组及文献报道均未见淋巴结肿大。

A further study on imaging diagnosis of LD was made on the basis of lately discovered 4 cases of LD (with CT and X—ray films), the author's previous report on 2 cases of LD, and literature review. The following features of the imaging presentation of LD were further explained: the infiltrates of pulmonary parenchyma in LD frequently progress, suggesting that severity of imaging presentation does not correlate with clinical outcome; resolution of chest opacities may be slow and incomplete, and residual abnormalities, for example, pleural effusions of thickening, small irregular shadows and atelectasis, often occur; free pleural effusion or pleural reaction is common, a loculated pleural fluid collection suggests mixed infection; cavitation is a prominent feature of immunosuppressed patients; and lymphadenopathy is not seen in our patients with LD and so is it reported in the literature.