孤立性肺结节邻近结构CT征象的统计学分析

Statistical analysis of CT features of lung field on the verge of solitary pulmonary nodules

目的统计分析孤立性肺结节CT周围结构征象的诊断价值。方法分别按"孤立肺结节"和"CT"两个关键词检索1990-2006年国内外文献。对文献中报道的良、恶性肺结节周边征象进行分类统计,包括血管切迹征、晕征、充血征、血管连接征、卫星灶征、胸膜凹陷征、阳性支气管征7种邻近肺野征象。比较不同征象在良、恶性结节中出现的百分比是否有统计学差异。结果共搜索到国内外有效文献139篇,被研究的孤立肺结节共1321个。其中良性结节407例,恶性结节914例。除晕征、卫星灶征两种征象外,其他周围肺野征象在良、恶性肺结节中相差均显著(P<0.05)或非常显著(P<0.01)。结论绝大多数孤立性肺结节的周围征象对诊断有价值。晕征、卫星灶征在良、恶性结节中相差不大。

Objective To count the value of CT features in lung field nearby solitary nodules. Methods According to the key words named solitary pulmonary nodule and CT, we search the papers in the medical journals which published in the world from 1990 to 2006. To count the lung field sign nearby the solitary nodules and classificate them. The sign which had been in accordance with our conditions including vascular notch ,halo sign,pulmonary congestion, draining vessels sign, satellite lesions sign, pleural indentation sign and positive bronchogram sign. To compare each sign＇s occurrence ratio in both malignant and benign nodules and to count their difference statically. Results 139 papers reached our study demand which contained 1321 cases of pulmonary nudles in these papers. The number of benign and malignant solitary pulmonary nodules was 407 and 914 cases. All sign above in the two groups had significant difference（P 〈0. 05 or P 〈0. 01 ） except halo sign and satellite lesion sign. Conclusion Most of CT signs in the lung field nearby the solitary pulmonary nodule had the value of diagnosis except the halo and satellite sign.