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Objective:To investigate the risk of lung cancer and screening results of residents in 3 cities of Shanxi Province from 2014 to 2018.Methods:Cluster random sampling method was used to select permanent residents from 3 cities (Taiyuan, Jincheng and Yangquan) in Shanxi Province from January 2014 to December 2018 for lung cancer risk assessment. People at high risk of lung cancer were screened by low-dose spiral CT. The screening results were analyzed and the influencing factors of lung cancer occurrence were analyzed by unconditional logistic regression.Results:184 539 people were included in the survey, and 36 790 people (19.94%) were at high risk of lung cancer. The detection rate of high-risk of lung cancer in men was higher than that in women [29.76% (25 690/184 539) vs. 11.30% (1 100/184 539), χ2 = 10.44, P = 0.001]. A total of 12 660 people (34.41%) at high risk of lung cancer participated in clinical screening, and 3 038 people (24.00%) were positive in clinical screening for lung cancer. There were no statistical differences in the positive rate of clinical screening among people at high risk of lung cancer with different gender, nationality, education, marital status, occupation, history of harmful substance exposure, coal burning, clean heating, indoor oil fumes, and history of pulmonary tuberculosis (all P > 0.05). There were statistical differences in the positive rate of clinical screening among people at high risk of lung cancer with different age, smoking, drinking, drinking tea, physical exercise, exposure time of second-hand smoke, living environment air pollution, history of emphysema, history of pneumoconiosis, family history of lung cancer, mental depression, and history of trauma (all P < 0.05). Logistic regression analysis showed that age ≥ 50 years old, smoking, exposure to second-hand smoke for 1-14 years, living environment air pollution, history of emphysema, family history of lung cancer, and mental depression were the risk factors for positive clinical screening in people at high risk of lung cancer (all P < 0.05), and physical exercise was the protective factor for positive clinical screening in people at high risk of lung cancer ( P < 0.05). Conclusions:The screening rate of people at high risk of lung cancer in 3 cities of Shanxi Province needs to be improved. The detection rate of intrapulmonary nodules in people at high risk of lung cancer is mainly affected by age, smoking, exposure time of second-hand smoke, family history of lung cancer, history of emphysema and other factors.
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Objective To investigate the application value of serum auto-antibody detection combined with low-dose spiral computed tomography (LDCT) in early lung cancer screening. Methods From 12568 medical examination crowd (7453 males and 5115 females), 1324 people with high-risk cases of lung cancer in our medical examination center were divided randomly into three groups (LDCT, serum auto-antibody, and serum auto-antibody combined with LDCT groups). All people in this research were screened by chest X-ray. Follow-up was conducted for one year, and the positive screening and diagnosis rates of early lung cancer screening were compared between these groups of high-risk people with lung cancer. Results The positive screening and diagnostic rates of high-risk lung cancer in the serum auto-antibody combined with LDCT group was significantly higher those that in other two groups (P < 0.001). The specificity and sensitivity of serum auto-antibody combined with LDCT group were 89.1% and 88.4%, respectively; the area under the ROC curve was 0.863. Conclusion Serum auto-antibody detection combined with low-dose spiral CT can significantly improve the positive screening rate of lung cancer in high-risk populations, providing a strong theoretical support for lung cancer screening pathway.
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Objective To investigate the application value of low-dose spiral CT(LDCT) scanning in high-risk population screening of lung cancer.Methods A total of 1 071 cases of LDCT lung scanning(observation group) and 350 cases of conventional dose CT lung scanning dose(control group) from October 2015 to May 2017 were performed the comparison on mean irradiation dose,lesion occurrence rate and diagnostic accuracy.Results The computed tomographic dose index(CTDI) in the observation group was(0.74±0.28)mSv;the excellent image quality rate was 95.42 ％;the positive detection rate was 43.60 ％ (467/1 071);13cases(1.21 ％)were confirmed as lung cancer by pathology.The average CTDI in the control group was(14.46 ± 4.21)mSv;the excellent image quality rate was 98.85 ％;the positive detection rate was 45.1 ％ (158/350);5 cases(1.43％) were confirmed as lung cancer by pathology.The average radiation dose and image quality showed statistically significant difference between the two groups (P＜0.05),and the positive detection rate and diagnostic rate of lung cancer had no statistical difference between the two groups (P＞0.05).Conclusion LDCT scan has good image quality,can significantly reduce the subject's irradiation dose without affecting the detection of lung lesions and lung cancer occurrence rate.
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Objective The objectives of this study were to analyze the results of lung cancer screening from 9265 urban residents in Urumqi from year 2014 to 2016,and to evaluate the significance of early diagnosis and treatment of cancer for the lung cancer prevention.Methods A total of 31,177 people with high risk of lung cancer were assessed by cancer risk questionnaire surveyed from 40 to 69 years old residents in Urumqi.High-risk groups were assigned to low-dose spiral CT scan in Affiliated Tumor Hospital of Xinjiang Medical University.Results 9,265 people were scanned with low dose spiral CT and overall completion rate was 29.7％.There had 11.9％ detection rate in 1,005 people who were scanned positive pulmonary nodules.The detection rate was 31.9％ for 2,955 people who were scanned solid nodules(＜5 mm) and 2.5％ for 236 people who had the non solid nodules(＜ 8 mm).After screening,14 patients were diagnosed by pathology and the detection rate was 0.2％.The emphysema,pulnonary cysts,pulmonary bullae and other related lung disease were detected in 4,095 people and the detection rate was 44.2％.Conclusion The lung health status of Urumqi residents was found by a wide range of lung cancer screening,and the awareness of lung cancer prevention and control was greatly improved.It provided the basis for the establishment of effective prevention and treatment system,which was helpful to improve the early diagnosis and treatment rate of lung cancer.
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Background and purpose:As one of the most fatal malignant tumors in China, the morbidity and mortality of lung cancer remain high. Early diagnosis and normative treatment is the key to improve the prognosis of lung cancer. The aim of this study was to explore the practice of early lung cancer screening with low-dose spiral computed tomography (CT) based on the current situation in community health service, with integration of superior resources of med-ical institutions at all levels in Shanghai.Methods:From Aug. 2013 to Aug. 2014, we screened high-risk population in selected communities of Minhang District, Shanghai, for early diagnosis of lung cancer with low-dose spiral CT combined with multidisciplinary comprehensive treatment models including minimally invasive surgery, exploring the medical service network covering prevention, diagnosis, treatment, rehabilitation and follow-up.Results:Screening population is 11 332 (male 7 144, female 4 188); Twenty-nine cases with pathological diagnosis of malignant tumor, including 27 cases of pri-mary lung cancer, 1 case of lung metastasis, 1 case of breast cancer. The morbidity of primary lung cancer is 238.26×10-5. There were 22 cases of Stage 0-Ⅰ lung cancer accounting for 81.48% of all diagnosed primary lung cancer.Conclusion:Based on community health service, screening with low-dose spiral CT could improve the early diagnosis rate of lung can-cer with feasibility and validity, which could be applicable in qualified eligible medical center and community in China.