The diagnosis, in this case, is a thyroglossal cyst.
The lower part of the thyroglossal duct develops into the thyroid gland, and if a portion of this duct remains patent, it forms a thyroglossal cyst.
They usually present at 15-30 years of age and are located in the midline just above the hyoid cartilage. They can become inflamed and painful but mostly present as painless swellings that rise on tongue protrusion.
Potential complications include:
- Thyroglossal fistula
- Thyroglossal duct carcinoma
Treatment is with surgical resection of the duct to the base of the trunk and removal of the central portion of the hyoid bone (Sistrunk procedure).
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