增强CT扫描对肺孤立型结节定性诊断价值

Diagnostic Value of Enhanced CT Scan in Solitary Pulmonary Nodule

目的探讨增强CT扫描孤立性肺结节的影像学特征及其对定性诊断的价值。方法回顾性分析该院2013年6月—2017年2月病理证实的94例孤立性肺结节增强CT影像学资料,分析其影像学特征及定性诊断率。结果94例肺结节69例肺癌(73.4%),25例良性结节例(26.6%),纵膈窗69例肺癌结节均获得强化(100.0%),25例良性结节21例获得强化(84.0%),强化峰值肺癌高于良性结节,肺窗CT征象淤血征、血管纠集征肺癌高于良性结节,充血征肺癌低于良性结节;胸膜凹陷征肺癌高于良性结节,毛刺征肺癌高于良性结节。肺癌定性诊断率为88.4%,良性结节定性诊断率为76.0%,肺癌的定性诊断率同肺部良性结节差异无统计学意义(P>0.05)。结论肺孤立性结节良、恶性病变增强CT具有不同的征象,增强CT扫描能够为其定性诊断提供依据。

Objective This paper tries to investigate the imaging features of solitary pulmonary nodule(SPN)in enhanced CT scan,and its value in qualitative diagnosis.Methods 94 cases of enhanced CT date for solitary pulmonary nodule confirmed with pathology from June 2013 to February 2017 were selectd,and imaging features and rate of qualitative diagnosis was analyzed.Results There was 69 cases of lung cancer(73.4%)and 25 cases of benign node(26.6%)in 94 cases of SPN,and in mediastinum window of enhanced CT,and all lung cancer node of 69 cases were enhanced(100.0%),and 21 cases of 25 cases benign node were enhanced(84.0%)and peak value of enhance was higher in lung cancer than in benign node,and in lung window of enhanced CT,rate of pulmonary congestion and vascular convergence sign was higher than in benign node,rate of pulmonary congestion was lower in lung cancer than in benign node,and rate of pleural indentation and burr sign was higher in lung cancer than in benign node,and the diagnosis rat was 88.4%in lung cancer and was 76.0%in benign nodule,there was no significant difference in these two sides(P>0.05).Conclusion Maligant and benign solitary pulmonary nodule had different imaging features in enhance CT scaning,and the enhanced CT scaning could provide evidence for qualitative diagnosis.