Objectives: To assess the clinical significance of serum CA-125 levels in elderly patients with pulmonary tuberculosis )PTB(. Methods: We retrospectively analyzed 1613 participants-patients )aged ≥60 years( admitted to the Beijing Shijitan Hospital, Beijing, China from February 2015 to January 2021 and healthy participants, divided into 4 groups: PTB )group 1(, pulmonary malignancies )group 2(, pulmonary non-malignant diseases )group 3(, and healthy participants )group 4(. Data concerning demographics, physical examination findings, computed Original Article tomography, histopathological examination, and laboratory tests for Mycobacterium tuberculosis and serum CA-125 levels were collected and analyzed.Results: There were 720 healthy individuals and 893 patients in the study. The median levels and abnormal rates of CA-125 in groups 1 )42.5, 57.3%( and 2 )34.4, 49.5%( were higher than those in groups 3 )21.1, 29.2%( and 4 )8.6, 0.4%( )p<0.05(. The ordinal logistic regression analysis model revealed significant associations between CA-125 levels and PTB )OR and 95% confidence interval [CI]: 2.749 )1.876-4.027 ((, hypoproteinemia [OR and 95% CI: 1.519 )1.114-2.070(], serous effusion [OR and 95% CI: 7.364 )5.346-10.143(], pulmonary malignancy [OR and 95% CI: 2.206 )1.518-3.204(], respiratory failure [OR and 95% CI: 3.216 )2.087-4.956(], and cor pulmonale [OR and 95% CI: 2.990 )1.282-6.973(].
Conclusion:Although elevated CA-125 levels may serve as a potential marker for diagnosing PTB in the elderly, they are affected by multiple factors, including serous effusion. Hence, caution is warranted while using this marker.