CTICasesEctopic Thymoma in the Lower Neck
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Imaging findings
Her prevascular space in her anterior mediastinum is normal. In her neck, there is a nodule inferior to the left lobe of the thyroid gland, which is a soft tissue mass and circumscribed, not looking like thyroid tissue.
Key takeaways
This is a case of an ectopic thymoma in the lower neck. Ectopic thymic tissue is present in at least twenty percent of people, resulting from the incomplete migration of the third and fourth branchial pouches as the thymic tissue normally descends into the anterior mediastinum during development. It's a good reminder to look everywhere for a thymoma, especially with a high pretest probability in a patient with myasthenia gravis, even in an unusual location.
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See all cases from January 14, 2016 →