Metastases to the thyroid

Last revised by Ammar Haouimi on 31 Jan 2019

Metastases to the thyroid are an uncommon cause of thyroid malignancy

Metastases to the thyroid represent 1.4-3% of all malignancies 5. In autopsy series, the incidence is ~10% (range 2-24%) 1,5

The most common sites of primary malignancy include (note these will vary by region) 1,2,5:

Metastases to the thyroid most commonly have the following features 1:

  • hypoechoic lesion with poorly circumscribed margins (80%)
  • no calcifications
  • concurrent cervical lymphadenopathy (80%)

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