Thyroid cancer and breast cancer are linked

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Takeaway
  • The overall risk of thyroid cancer among breast cancer patients is increased, as is the risk of breast cancer in thyroid cancer patients.

Key Results
  • Of 4243 patients with thyroid cancer, 1.2% developed breast cancer during 5 year followup, with a standardized incidence ratio of 2.45.
  • Of 6833 patients with breast cancer, 1.1% developed thyroid cancer during a 6.2 year followup, with a standardized incidence ratio of 2.18.
  • The expression of both...