期刊
ENDOCRINOLOGY AND METABOLISM
卷 38, 期 1, 页码 93-103出版社
KOREAN ENDOCRINE SOC
DOI: 10.3803/EnM.2023.1667
关键词
Thyroid neoplasms; Mass screening; Ultrasonography
This study compared incidental thyroid cancer (ITC) with non-incidental thyroid cancer (NITC) through a meta-analysis to evaluate the impact of screening on the clinical outcomes of thyroid cancer. The results showed that compared to the NITC group, the ITC group had lower rates of aggressive histology, tumor size, lymph node metastasis, distant metastasis, recurrence, and thyroid cancer-specific mortality.
Background: Thyroid cancer screening has contributed to the skyrocketing prevalence of thyroid cancer. However, the true benefit of thyroid cancer screening is not fully understood. This study aimed to evaluate the impact of screening on the clinical outcomes of thyroid cancer by comparing incidental thyroid cancer (ITC) with non-incidental thyroid cancer (NITC) through a meta-analysis. Methods: PubMed and Embase were searched from inception to September 2022. We estimated and compared the prevalence of high-risk features (aggressive histology of thyroid cancer, extrathyroidal extension, metastasis to regional lymph nodes or distant or-gans, and advanced tumor-node-metastasis [TNM] stage), thyroid cancer-specific death, and recurrence in the ITC and NITC groups. We also calculated pooled risks and 95% confidence intervals (CIs) of the outcomes derived from these two groups. Results: From 1,078 studies screened, 14 were included. In comparison to NITC, the ITC group had a lower incidence of aggressive histology (odds ratio [OR], 0.46; 95% CI, 0.31 to 0.7), smaller tumors (mean difference, -7.9 mm; 95% CI, -10.2 to -5.6), lymph node metastasis (OR, 0.64; 95% CI, 0.48 to 0.86), and distant metastasis (OR, 0.42; 95% CI, 0.23 to 0.77). The risks of recurrence and thyroid cancer-specific mortality were also lower in the ITC group (OR, 0.42; 95% CI, 0.25 to 0.71 and OR, 0.46; 95% CI, 0.28 to 0.74) than in the NITC group. Conclusion: Our findings provide important evidence of a survival benefit from the early detection of thyroid cancer compared to symptomatic thyroid cancer.
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