Analysis of Lung LDCT Screening Results in 1 517 Asymptomatic Physical Examination Patients
Objective:To analyze the screening results of low-dose computed tomography(LDCT)in asymptomatic physical examination patients.Methods:1 517 asymptomatic patients who underwent lung examinations in our hospital from September 2020 to September 2023 were selected as the study subjects.They were divided into low risk group(n=1 081),medium risk group(n=333),and high-risk group(n=103)based on the general information of the examiners.The screening results were analyzed.Results:The LDCT screening results showed that out of 1 517 physical examination subjects,206 were positive(166 were single nodules,40 were multiple nodules),810 were semi positive,a total of 1 016 nodules,and 9 were diagnosed with lung cancer(including 7 early lung cancer cases,accounting for 77.78％).The detec-tion rate of nodules in the low-risk group was 64.01％(692/1 081),the detection rate of nodules in the me-dium risk group was 73.27％(244/333),and the detection rate of nodules in the high-risk group was 77.67％(80/103),There was a significant difference in the detection rate of nodules between the high-risk group and the medium risk group compared to the low risk group(P＜0.05);among the 9 cases of lung cancer,there were 4 males,5 females,3 smokers(including no female smokers),and 6 non-smokers(in-cluding 5 females).Among them,7 physical examination subjects were exposed to passive smoking for a long time.The diagnosis rate of lung cancer in the low-risk group was 0.46％(5/1 081),the diagnosis rate of lung cancer in the medium risk group was 0.90％(3/333),and the diagnosis rate of lung cancer in the high-risk group was 0.97％(1/103).There was no significant difference in the diagnosis rate of lung cancer among the three groups(P＞0.05);the follow-up results showed that the false positive rate of nodule screen-ing was 8.77％(57/650).Conclusion:LDCT can be used for early lung cancer screening in asymptomatic physical examination population,with an early diagnosis rate of 77.78％and a low false positive rate.
万方数据
维普
