The Study
Prevalence of Subclinical Papillary Thyroid Cancer by Age: Meta-analysis of Autopsy Studies.
This study looked at how often people had tiny thyroid cancers when they died and were autopsied. It found these cancers were common in all age groups, but it can’t say why they’re there or if they turn into real sickness — it just counts them.
Analysis score
Maximum 100 for a systematic review with meta-analysis.
Where the score came from
Scientists looked at thousands of autopsies to see how often people had tiny thyroid cancers they never knew about.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 548 / 100
Quality score
The highest quality evidence. Systematic reviews and meta-analyses that pool randomized controlled trials, giving the most reliable summary of experimental evidence.
Key takeaways
Summary
Based on the study abstract and findings.
- 1No, it's not something that gets more common as you age — it's already common in young adults and stays that way.
- 2About 13 out of 100 people had hidden thyroid cancer if their whole thyroid was checked; only 5 out of 100 if only part was checked.
- 3This hidden cancer rate stayed about the same from age 20 to 80+ and was the same in men and women.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
The Journal of clinical endocrinology and metabolism
Year
2022
Authors
Natalia Arroyo, K. Bell, Vivian Hsiao, Sara Fernandes-Taylor, O. Alagoz, Yichi Zhang, L. Davies, D. Francis
Related Content
Claims (5)
Getting everyone screened for thyroid cancer finds a lot of harmless lumps that would never hurt you, so more people are told they have cancer—but it doesn’t save any lives.
Some cancers found during routine screening might never hurt you — they grow so slowly that you’d die of something else before they ever became a problem.
When doctors examine entire thyroid glands after death, they find thyroid cancer more often than when they only check part of the gland — so how they look at the gland changes how common the cancer seems to be.
Even as people get older—from their 20s to their 80s and beyond—the number of people who have tiny, undetected thyroid cancer stays about the same, hovering between 11.5% and 13.4%.
Men and women are equally likely to have small, undetected thyroid cancer that doesn’t cause symptoms, no matter how old they are.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.