Signet‐ring cell microfollicular adenoma arising in a nodular ectopic thyroid. A case report

Abstract
A symptomless submandibular mass removed from a 61-year-old white male proved to be a signet-ring microfollicular adenoma arising in ectopic thyroid tissue. The lesion was established as a primary, non-mucin producing thyroid adenoma and a diagnosis of secondary signet-ring adenocarcinoma excluded.

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