An extremely rare case of papillary carcinoma is described arising in a submental-intralingual thyroglossal duct cyst. A 27-year-old male presented with a painless swelling in the submental region extending to the tongue which had gradually been increasing in size over the last three months. Upon examination of the neck, a tender right paramedian mass was found in the submental region just abov...

RATIONALE Ectopic thyroid carcinoma within a thyroglossal duct cyst (TGDCCa) is an extremely rare entity. Thus, there is no unified appropriate therapeutic strategy, and individual approaches are controversial. PATIENTS CONCERNS We report the case of a 21-year old woman who underwent Sistrunk procedure for a thyroglossal duct cyst (TGDC). DIAGNOSES During histological evaluation of the rese...