Efficacy and Safety Analysis of Multislice Spiral CT-Guided Transthoracic Lung Biopsy in the Diagnosis of Pulmonary Nodules of Different Sizes

Abstract

Objective. This study is aimed at investigating the efficacy and safety of multislice spiral CT-guided transthoracic lung biopsy in the diagnosis of pulmonary nodules of different sizes. Methods. Data of 78 patients with pulmonary nodules who underwent CT-guided transthoracic lung biopsy in our hospital from January 2020 to December 2021 were retrospectively analyzed, and they were divided into the small nodules group ( $n=12$ ), medium nodules group ( $n=35$ ), and large nodules group ( $n=31$ ) according to the diameter of pulmonary nodules. The results of puncture biopsy and final diagnosis of pulmonary nodules of different sizes were compared. The incidence of complications in patients with pulmonary nodules of different sizes was compared. Univariate analysis was used to compare the incidence of complications in 78 patients. Logistic multiple regression analysis was used to analyze the independent risk factors of pneumothorax in patients with pulmonary nodule puncture. Logistic multiple regression analysis was used to analyze the independent risk factors of pulmonary hemorrhage in patients with pulmonary nodule puncture. Results. The diagnostic accuracy, sensitivity, and specificity were 83.33%, 100.00%, and 77.78% in small nodules group. The diagnostic accuracy, sensitivity, and specificity of medium nodules group were 85.71%, 100.00%, and 73.68%, respectively. The diagnostic accuracy, sensitivity, and specificity of large nodules group were 93.55%, 100.00%, and 33.33%, respectively. There was no significant difference in the incidence of pneumothorax among the three groups ( $P>0.05$ ). The incidence of pulmonary hemorrhage in small nodule group was higher than that in the medium nodule group and large nodule group, and the difference was statistically significant ( $P<0.05$ ). There was no significant difference in the incidence of total complications among the three groups ( $P>0.05$ ). There were statistically significant differences in clinical data such as the needle tract length, the puncture position, and the distance of the puncture needle passing through the lung tissue in patients with or without pneumothorax ( $P<0.05$ ). There were statistically significant differences in needle tract length, distance of puncture needle passing through lung tissue, and size of pulmonary nodules in patients with or without pulmonary hemorrhage ( $P>0.05$ ). Logistic multivariate analysis showed that needle tract $\text{length}\le 50\text{mm}$ , lateral decubitus position, and $\text{the}\text{distance}\text{of}\text{puncture}\text{needle}\text{passing}\text{through}\text{lung}\text{tissue}\ge 14\text{mm}$ were independent risk factors for pneumothorax after puncture in patients with pulmonary nodules ( $P<0.05$ ). The needle tract $\text{length}>50\text{mm}$ , the $\text{distance}\text{of}\text{puncture}\text{needle}\text{passing}\text{through}\text{lung}\text{tissue}\ge 14\text{mm}$ , and small nodules (pulmonary nodules $\text{diameter}\le 10\text{mm}$ ) were independent risk factors for pulmonary hemorrhage after puncture in patients with pulmonary nodules ( $P<0.05$ ). Conclusion. Multislice spiral CT-guided transthoracic lung biopsy is effective in diagnosing pulmonary nodules of different sizes.