Exploring the value and optimizing strategies of CA125, CA199, CEA, AFP, and PT in predicting adenomatous gastrointestinal polyps in elderly male patients.

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This study explores the application of serum biomarkers in the diagnosis of adenomatous polyps and evaluates the effectiveness of different markers and their combined diagnosis in adenomatous polyp detection. Using receiver operating characteristic curve analysis, this study assessed the efficacy of serum biomarkers such as carcinoembryonic antigen (CEA), carbohydrate antigen 125 (CA125), alpha-fetoprotein (AFP), carbohydrate antigen 199 (CA199), and prothrombin time (PT) in diagnosing adenomatous polyps in 90 patients. The study also compared the diagnostic accuracy of individual tests versus combined diagnostic approaches and analyzed the impact of polyp size and number on the levels of these markers. Among the individual tests, CA125 showed relatively high diagnostic efficacy. However, combined diagnostic approaches, such as the combination of CEA and CA125, the trio of CEA, CA125, and AFP, and the quartet of CEA, CA125, AFP, and PT, significantly improved diagnostic sensitivity and specificity. Additionally, the study found that the size and number of adenomatous polyps significantly influenced the levels of CEA, CA125, CA199, and PT, with larger and more numerous polyps associated with higher marker levels. This study demonstrates that combined diagnostic strategies have significant advantages in diagnosing adenomatous polyps, providing more accurate and comprehensive diagnostic information. Furthermore, the impact of polyp size and number on serum biomarker levels suggests that these clinical factors should be considered in clinical assessments. These findings offer new perspectives and approaches for the diagnosis of adenomatous polyps.