Clinical syndrome characterized by hypermetabolic state due to the increased free serum thyroxine (T4) and/or free triiodothyronine (T3).

Thyroglossal fistula

Small, midline, and acquired fistula related to the thyroglossal duct with a crescentic skinfold above it

Thyroglossal duct cysts

Anterior midline neck mass (fibrous cyst) that moves with swallowing or protrusion of the tongue that forms from a persistent thyroglossal duct.

Multiple Endocrine Neoplasia (MEN)

Hereditary condition characterized by the occurrence of tumours involving two or more endocrine glands.