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Thyroid cancer is the most common endocrine cancer. Estimated new
cases and deaths from thyroid cancer in the United States in 2005:
- New cases: 25,690.
- Deaths: 1,490.
The incidence of thyroid nodules in the general population is
4%-7%, with nodules being more common in females than males. The
prevalence of thyroid cancer in a solitary nodule or in multinodular
thyroid glands is 10%-20%; this increases with irradiation of the
neck in children and older men.
Between 1973 and 1997, the incidence of thyroid cancer increased
by 24%, whereas mortality from this cancer decreased by 24%.
Women are affected more often than men (3:2 ratio).
Most patients are between the ages of 25 and 65 years at the time
of diagnosis of thyroid carcinoma.
Race and ethnicity
Asian race has been shown to be a risk factor.
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Japan and Hawaii have shown a higher incidence of thyroid