Different CT Signs of Fibrosing Mediastinitis Caused by Tuberculosis and Pneumoconiosis
Objective To explore the value of CT features in differentiating fibrosing mediastinitis(FM)caused by tuberculosis and pneumoconiosis through analyzing the CT imaging features of FM related to two etiologies.Methods The following CT features of tuberculosis group(24 cases)and pneumoconiosis group(22 cases)were statistically analyzed:1.Central airway manifestations,including stenosis of trachea,main bronchi and segmental bronchi;2.Pulmonary artery manifestations,including the ratio of main pulmonary artery to aorta diameter,stenosis of the left/right pulmonary artery,stenosis of the lobar pulmonary artery,and secondary pulmonary embolism;3.Pulmonary vein manifestations,including stenosis of the common pulmonary vein;4.Manifestations of superior vena cava,including stenosis of superior vena cava;5.Lymph node manifestations,including lymph node calcifications and CT attenuation value of non-calcified area of lymph nodes s;6.Other manifestations,including whether the fibroproliferative foci were diffusely distributed and mild homogeneous enhanced,whether they were combined with pericardial effusion,whether esophagus stenosis caused by compression or adhesion was presented,and whether they were accompanied by signs similar to malignant invasion.Results There were statistically significant difference(P＜0.05)of the following features between two group of patients:stenosis of the lobar pulmonary artery(tuberculosis 4/24,pneumoconiosis 12/22),superior vena cava stenosis(tuberculosis 4/24,pneumoconiosis 11/22),lymph node calcification(tuberculosis 7/24,pneumoconiosis 18/22),and CT attenuation value of non-calcified area of lymph nodes(tuberculosis 44.0±15.8HU,71.1±16.6HU).There was not statistically significant difference for other features.Conclusion Compared with the tuberculosis group,the pneumoconiosis group was more likely to cause stenosis of the lobar pulmonary artery and superior vena cava,and the calcification rate of lymph nodes and the CT value of non-calcified area were higher.
万方数据
维普
