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Abstract

Thyroglossal duct cysts are prevalent congenital cervical anomalies, affecting approximately 7% of the population. They can emerge at various locations along the thyroid's migration path, extending from the base of the tongue to the lower neck. Here, we present the case of a 27-year-old female patient with an unremarkable medical history, who presented with a one-month history of nasal obstruction. Clinical examination is unremarkable. However, incidental findings on computed tomography and ultrasound revealed a mass located at the base of the tongue, corresponding to a sublingual thyroglossal duct cyst. This occurrence represents a rare and atypical location for such cysts, which we will detail in this article.