Application of CT in the diagnosis of early peripheral lung cancer / 中国基层医药

ABSTRACT

Objective To evaluate the clinical value of CT in the diagnosis of early peripheral lung cancer , and to analyze the CT features of early peripheral lung cancer .Methods From November 2016 to November 2017 , 120 patients with suspected early peripheral lung cancer in Yongkang Long Chuan Family Hospital were selected in the study All patients underwent chest X -ray examination and CT examination ,and the pathological diagnosis results of puncture biopsy were taken as reference .The sensitivity,specificity and accuracy of X -ray CT in the diagnosis of early peripheral lung cancer were calculated , and the detection of lung lesions and extrapulmonary lesions between X-ray and CT was compared .Kappa consistency test was used to analyze the consistency between X -ray CT diagnosis of early peripheral lung cancer and pathological diagnosis of puncture biopsy .The X -ray signs of early peripheral lung cancer were observed and the CT findings of early peripheral lung cancer were analyzed .Results The diagnostic sensitivity,specificity and accuracy of CT for early peripheral lung cancer were 97.70％,96.97％, 97.50％,respectively,which of X -ray were 89.66％,81.82％ and 87.50％,respectively,the differences were statistically significant(χ2 =4.755,3.995,8.649,all P<0.05).By Kappa consistency test,the consistent Kappa values between the diagnostic results of X-ray and CT in early peripheral lung cancer and the pathological diagnosis of puncture biopsy were 0.514,0.748,respectively,which were moderate,good for lung lesions.The detective rates of intrapulmonary lesions and extrapulmonary lesions of CT were 94.03％and 96.43％,respectively,which were higher than those of X-ray(82.09％,78.57％,χ2 =4.542,4.082,all P<0.05).The X-ray signs of early peripheral lung cancer were mainly vacuole sign,lobulation,spiculation,pleural indentation,empty sign,visible low density,small transparent area,while the CT findings were lobulation ,spiculation,vascular convergence sign ,cavitation sign,pleural indentation ,visible spherical or oval nodules .Conclusion In the clinical diagnosis of early peripheral lung cancer , CT examination has significant diagnostic value .