Efficacy of Multi-slice Spiral CT and Rapid On-site Evaluation in Diagnosis of Pulmonary Nodules.

This study aims to explore the efficacy of multi-slice spiral computed tomography (MSCT) and rapid on-site evaluation (ROSE) in diagnosing pulmonary nodules, thereby providing more diagnostic information for clinical diagnosis, and improving the diagnostic efficiency of pulmonary nodules.With the means of a retrospective study, 103 patients with pulmonary nodules in our hospital from January 2019 to December 2021 were analyzed. The included patients had no history of lung surgery, and had no cognitive, audio-visual, language communication and physical activity disorders, with visual lesions in bronchoscopy. All patients underwent MSCT scans and ROSE. In the process of cell puncture or tissue biopsy, cell fluid smears or tissue prints were directly used to make cytological specimens. In the operation site, real-time production, staining and real-time cell analysis were carried out to determine whether the material was qualified. The diagnostic efficacy of MSCT, ROSE, and the combination of the two for pulmonary nodules was analyzed.Of the 103 patients, there were finally 68 cases diagnosed with solitary nodules (66.02%) and 35 cases with multiple nodules (33.98%), with 196 pulmonary nodules in total; 25 of them were peripheral lung cancer (24.27%) and 78 were benign nodules (75.73%); and based on the results of clinical diagnosis, they were divided into the malignant group and the benign group separately. Diagnosis of MSCT showed that the probabilities of calcification, spicular sign, lobulation sign, vacuolar sign, and spinous process in the malignant group were significantly higher than those in the benign group (P = .000). 30 positive cases and 73 negative cases were detected by MSCT, including 13 false positives and 8 false negatives. ROSE detected 29 positive cases and 74 negative cases, of which 5 positives were diagnosed as negatives, and the 9 negatives were diagnosed as positives. There were 28 positive cases and 75 negative cases detected by the combination of MSCT and ROSE, including 5 false positives and 2 false negatives. The combined diagnosis of MSCT and ROSE demonstrated an accuracy of 93.20%, sensitivity of 92.00%, specificity of 93.59%, positive predictive value of 82.14%, and negative predictive value of 97.33%. The accuracy, sensitivity, specificity, positive and negative predictive values of MSCT diagnosis were 79.61%, 68.00%, 83.33%, 56.67% and 89.04%, respectively. In ROSE diagnosis, the accuracy, sensitivity, specificity, positive and negative predictive values were 86.41%, 80.00%, 88.46%, 68.97% and 93.24%. The combined diagnosis of MSCT and ROSE had a significantly higher diagnosis rate than the single diagnosis of MSCT and ROSE (P = .000). Through ROC analysis, the area under the curve (AUC) of combined diagnosis was overtly larger than that of single diagnosis of MSCT and ROSE (P = .000). The AUC of MSCT diagnosis and ROSE diagnosis were 0.757 (95%CI: 0.639-0.875) and 0.842 (95%CI: 0.742-0.943) respectively, and the AUC of the combined diagnosis of MSCT and ROSE was 0.928 (95%CI: 0.859-0.997).The combination of MSCT and ROSE contributes to the advances in the diagnostic efficacy for pulmonary nodules in order to reduce the damage caused by ineffective biopsy, which is of great clinically instructional value to the early diagnosis of this disease. This method is convenient to provide reasonable reference materials for the formulation of scientific clinical treatment plan and accurate judgment of prognosis, thereby promoting the good prognosis of patients.