Thyroglossal duct cyst versus thyroid nodule movement with maneuvers
A thyroglossal duct cyst typically moves upward when the tongue is protruded and during swallowing. [1] A thyroid nodule (as part of thyroid tissue) is expected to move cephalad with deglutition (swallowing). [2]
Movement with tongue protrusion
A thyroglossal duct cyst elevates with tongue protrusion because of its embryologic tract connection to the base of the tongue. [1]
Movement with swallowing
Thyroid tissue typically moves upward with swallowing because the thyroid is attached to the laryngeal region via the pretracheal fascia and therefore ascends with deglutition. [2]
Interpretation of the stated exam pattern
An anterior neck mass that elevates with swallowing but also elevates with tongue protrusion is more consistent with a thyroglossal duct cyst. [1] An anterior neck mass that elevates with swallowing but does not elevate with tongue protrusion makes a thyroglossal duct cyst less likely than a thyroid-origin process. [1]
Clinical next step
Neck ultrasound is recommended to confirm thyroid tissue involvement and to evaluate a suspected thyroglossal duct cyst. [1]