Probability of Developing Thyroid Cancer
1 in 83 (1.2%)
Lifetime probability in US
About 1.2% of Americans will be diagnosed with thyroid cancer in their lifetime, with women three times more likely than men.
Thyroid cancer has a lifetime risk of approximately 1.2% in the United States, according to the NCI SEER program. It is one of the fastest-growing cancer diagnoses, largely due to improved detection through ultrasound imaging. Women are about three times more likely to develop thyroid cancer than men.
The most common type, papillary thyroid cancer, accounts for about 80% of cases and has an excellent prognosis, with a 5-year survival rate exceeding 98%. Risk factors include radiation exposure (especially in childhood), a family history of thyroid cancer, certain genetic syndromes like familial medullary thyroid cancer, and iodine deficiency.
Despite the rising incidence, thyroid cancer mortality has remained relatively stable, leading some experts to suggest that a portion of the increase is due to overdiagnosis of small, indolent tumors that would never cause harm. Treatment typically involves surgery, radioactive iodine therapy, and thyroid hormone replacement.
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