Figure legends
Figure 1. Magnetic resonance images
Sagittal section /a cystic lesion with clear margins is observed.
Figure 2. A large mass on the dorsum of the tongue was observed.
Figure 3. Vertical site of onset of thyroglossal duct cyst, adapted from reference [4] with modifications. 1. Mentum-type, 2. Hyoid bone-type, 3. Sublingual-type
4. Thyroid-type, 5. Base-of-the-tongue type