摘要
高分辨率计算机断层扫描(HRCT)扫描越来越多地用于超敏性肺炎(HP)。这项研究观察了农民肺(FL)不同阶段的HRCT结果,FL是HP的一种常见形式。对95例滤泡性淋巴瘤患者(20例急性,75例有滤泡性淋巴瘤病史,48例仍有接触(Ex +)(奶牛场),27例停止接触(Ex-))进行横断面分析。所有的扫描结果由两名医生独立读取,如果需要,则由三名对类别一无所知的放射科医生读取。肺被分为六个区域(五叶+舌),读取衰减/马赛克、毛玻璃、小结节、纤维化和肺气肿。对每个区域和变量给予0-3分:0 =缺席,1 =表面<25%,2 = 25-50%,3 =>50%。纵隔淋巴结肿大也明显。在急性和Ex+病例中,下叶以磨玻璃为主。其他异常没有优先分配。Ex+组比Ex-组有更多的毛玻璃(p=0.0025)。 Emphysema was more frequently seen than interstitial fibrosis (p=0.004). Mediastinal lymphadenopathy was present in 26 cases (9 acute, 10 Ex+ and 7 Ex-). In conclusion, in farmer's lung: 1) ground-glass predominates in the lower lobes while the other abnormalities have no anatomic predilection; 2) contact avoidance allows a better resolution of computed tomography abnormalities than continued exposure; 3) emphysema is a more frequent finding than interstitial fibrosis; and 4) the presence of mediastinal lymphadenopathy has no negative diagnostic value.