
- Palpable thyroid nodules:
- Occur in 5% of women and 1% of men in iodine-sufficient areas.
- Thyroid nodule prevalence varies with detection mode and increases with age:
- 2% to 6% prevalence by palpation
- 19% to 68% prevalence by ultrasound
- Among all thyroid nodules:
- 7% to 15% are malignant:
- The proportion varies with:
- Age
- Gender
- Radiation exposure
- Family history
- Other factors
- The proportion varies with:
- 7% to 15% are malignant:
- At least 94% of thyroid carcinomas are:
- Differentiated thyroid cancer (DTC):
- Primarily papillary thyroid carcinoma (PTC), and follicular thyroid carcinoma
- Differentiated thyroid cancer (DTC):
- The annual incidence of thyroid cancer per 100 000 person has increased from:
- 4.6 in 1974 to 1977 to 14.4 in 2010-2013
- In the United States in 2019:
- 52,070 new cases of thyroid cancer are estimated to be diagnosed :
- 14,260 in men
- 37,810 in women
- This figure is largely attributable to:
- Incidentally detected subclinical disease:
- This figure is largely attributable to:
- Approximately 2,170 deaths from thyroid cancer are estimated:
- 1,020 men
- 1,150 women
- 52,070 new cases of thyroid cancer are estimated to be diagnosed :


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