CTICasesEctopic mediastinal thyroid tissue (ectopic goiter)
Cite this case
[...]. Ectopic mediastinal thyroid tissue (ectopic goiter). CTICases. Published August 9, 2019. https://str-case-explorer.pages.dev/c/b9qbr
Imaging findings
CT scan shows a large, lobulated, avidly enhancing anterior mediastinal mass with internal calcification and low-attenuation cystic areas. The mass has no connection to the orthotopic thyroid gland in the neck.
Key takeaways
Ectopic thyroid tissue can occur in the anterior mediastinum due to aberrant migration of thyroid rests during embryogenesis. It can undergo nodular hyperplasia (goiter) and presents as a hypervascular mediastinal mass.
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