非实性肺结节CT影像收缩力表现与侵袭性对照分析

Comparative study of CT image contractility and invasiveness of non solid pulmonary nodules

目的探讨分析非实性肺结节影像特征表现,评估收缩力在肺腺癌影像诊断中的应用价值。方法选取我院CT检出的肺部单发纯磨玻璃结节(pGGN)和混合磨玻璃结节(mGGN)共计116例,均经病理确诊为不典型腺瘤样增生(AAH)或肺腺癌,依据病理分为浸润前病变〔AAH+原位腺癌(AIS)〕组、微浸润性腺癌(MIA)组及浸润性腺癌(IAC)组,分别评估三组结节毛刺征、胸膜牵拉征、胸膜凹陷征及血管集束征的显示率。结果浸润前病变组收缩力低于MIA和IAC组,差异有统计学意义(P<0.05),IAC组结节收缩力表现略高于MIA组,但差异无明显统计学意义(P>0.05)。结论非实性结节收缩力的CT影像特征表现有助于结节定性诊断,收缩力影像表现越明显的非实性结节侵袭性越高。

Objective To retrospectively analyze the imaging features of non solid nodules and to evaluate the application value of contractility in the imaging diagnosis of adenocarcinoma.Methods From January 2018 to February 2021,116 cases of single pure ground glass nodule(pGGN)and mixed ground glass nodule(mGGN)in the lung detected by CT in our hospital were selected.All cases were pathologically diagnosed as atypical adenomatous hyperplasia(AAH)or lung adenocarcinoma.According to the pathology,they were divided into preinvasive lesion(AAH+AIS),microinvasive adenocarcinoma(MIA)and invasive adenocarcinoma(IAC)groups.The displey rate of three groups of nodules burr sign,pleural traction sign,pleural indentation sign and vascular bundle sign was assessed.Results The contractility of the lesion group before infiltration was lower than that of MIA and IAC groups,and the difference was statistically significant(P<0.05).The contractility of the nodules in IAC group was slightly higher than that in MIA group,but the difference was not statistically significant(P>0.05).Conclusion The CT imaging features of the contractile force of non solid nodules are helpful for the qualitative diagnosis of nodules.The more obvious the contractile force,the more invasive the non solid nodules are.