直径<2.0 cm肺部结核结节和肺癌的CT影像研究

目的进一步评价结核结节和肺癌的ＣＴ影像特点和鉴别诊断价值。方法对比分析直径＜２０ｃｍ的结核结节３０例和肺癌４０例的ＣＴ影像。结果结核结节以边缘光滑或清楚、无分叶而有小空洞、钙化、胸膜增厚粘连、卫星病灶或病灶周围炎多见，并有短期内动态形态改变。肺癌以边缘毛糙、浅分叶、空泡征、空气支气管征、典型胸膜凹陷征多见，短期动态形态不变。结论薄层ＣＴ扫描可提供有价值的征象，短期内动态观察是二病重要鉴别手段

CT images in differentiating tuberculous nodules from lung cancers with diameters less than 2 cm

Objective To find out the CT characteristics of tuberculous nodules and lung cancers with diameters less than 2 cm, and to evaluate their value in differentiating the two diseases. Method The CT images in thirty patients with tuberculous nodules and fourty lung cancer patients with lesions less than 2 cm in diameter were compared. Result Smooth or clear edge, non lobulation, small cavity, calcification, pleural thicking and adhesion, satellitic nidus and perifocal inflammation were found predominant in tuberculous nodules with short term dynamic changes in shapes, while shaggy border, shallow lobulation, vacuolus sign, air bronchogram and typical pleural indentation were predominant in lung cancers without dynamic changes in shapes. Conclusion Thin slice CT scanning can provide useful images, which by short term observations are important for differentiating these diseases.