A Preliminary Study On The Imaging Characteristics Of Pulmonary Tuberculosis And Malignant Pulmonary Space-Occupying Lesions By HRCT

Objective: To distinguish pulmonary tuberculosis’ s imaging characteristics of HRCT from lung cancer’s imaging characteristics of HRCT,so we can provide some evidence for clinical antidiastole of these two diseases.Methods: Patients who underwent chest HRCT and enhanced CT examination in the Department of Thoracic Surgery of The Affiliated Hospital of Qing Hai University from December 2016 to October 2021 were selected.They must be diagnosed as lung cancer or pulmonary tuberculosis by pathology results after surgery or paracentesis.Then we divided these all patients into two groups,tuberculosis and malignant pulmonary space-occupying lesions,and each group contained 100 pations.Then compared with their clinical and imaging data such as calcification,degree of enhancement,cavity,lobulation sign,margin,burr sign,pleural depression sign,mediastinal lymph node calcification and satellite focus,and perform statistical analysis last.Results: T test was used for maximum diameter and CT enhancement value,Chi-square test was used for calcification,cavity,lobulation sign,margin,pleural depression sign,mediastinal lymph node calcification,satellite focus,and burr sign.According to the above single factor analysis,CT enhancement value,calcification,lobular sign,margin,mediastinal lymph node calcification and satellite focus showed statistically significant differences(P< 0.05).Then we put meaningful indexesn into the multiple regression model for multiple factor Logistic regression analysis,and the significant indexes of CT enhancement,lobulation sign,burr sign and calcification between the two groups were found to be statistically different by taking the tuberculosis occupying group as the reference.With the increase of CT enhancement value,the probability of lung lesions belonging to lung cancer increased,while the probability of pulmonary tuberculosis decreased(OR=1.037,P< 0.05).Conclusion: In HRCT imaging features,malignant pulmonary space-occupying lesions were mainly related to CT enhancement,lobulation,blurred edge and fine short burrs,while Pulmonary tuberculosis was mainly related to mediastinal lymph node calcification,satellite focus,calcification and coarse long burrs.With the increase of CT enhancement value,the probability of lung lesions belonging to lung cancer increased,while the probability of pulmonary tuberculosis decreased.This study shows that HRCT imaging features can effectively identify malignant pulmonary space-occupying lesions and pulmonary tuberculosis space-occupying lesions and them are very important to the early non-invasive clinical antidiastole of these two diseases.Those signs with greater value for differential diagnosis,i.e.greater "weight",such as CT enhancement,lobulation sign,burr sign,satellite focus,and placeholder calcification,should be considered first.